#Rearranged SH282, an idea that became a mod, that we pester satiric for. *occasionally*
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huh neat
It’d be quite the thing
Isn't that a PSR train by that point?
.... And the crew set off, doomed to ride the rails for the rest of eternity, never to stop, for their destination never existed
I just did some quick math, and if I build this at 1/8 scale it would be 20ish meters long including the tenders
....how long would that be IRL?
"...and when they came back, the locomotive was missing, and the crew was never heard from again! Hahahah!"
"Anyways, that's how I lost my engineer's license."
Pffff
over 3000 posts in this thread 🥳
Gee
I like that the 3000th message is "ish" haha
3000ish messages
oh no wait I counted wrong
The scale 4-10-10-10-10-10-10-10-10-10-10-4 would be almost as long as the Big Boy
Without counting its tender
But counting the decuplex’s tenders
The approximative tractive effort of the real size decuplex is 3MN
3,000,000 N
Many much powa
Many much fun
Haul anything, maybe somewhere.
Could someone calculate the scale version’s tractive effort?
I estimate its power at about 5 times that of the Big Boy
idk what you using but cant you grab the smoke box nodes? (like in blender basically)
There are no nodes at the back of the smokebox. So if I moved the nodes at the front of the smoke box, I'd stretch the whole boiler texture
i see the problem
Just one long cylinder, not 2 cylinders 😔
o well
keep up the good work🫡
Question, what would be the highest power configuration for the ingame 282 that could be created (that isn’t necessarily in the mod) 🤔
2-18-2 supremacy
Where was that graph...
So, in theory, the more wheels you add, the more TE you have.
0-∞-0 would be your best bet.
In terms of best adhesion, it seems 0-10-0 and 0-8-0 are the best.
Why is the 2-8-0 and fast 2-8-2 so much worse 🤔
Bigger wheels.
Ohhh
Well to be fair about the wheel count.
They get smaller and smaller.
So that's the actual thing behind the TE.
Yeah.
Satiric can tell you better, but if I'm not mistaken, as you get smaller wheels and get more TE out of them, it's easier to slip thanks to the increased power that gets transmitted?
Because the axle load gets smaller and smaller.
Ah Kk thanks
I am the average steam enjoyer and wish to haul exceedingly heavy things out of places they probably shouldn’t be hauled out of 😎
ignore the massive amount of times things stall
Indeed. That also means a 0-4-0 with wheels the size of those on the 0-12-0 would slip the least
I wonder if its possible for the locos to keep there wheel arrangements after loading back in
Coz when i start my RSO play trough i would like to have a set loco with specific drivers for there respective jobs
You can adjust it with the comms radio
Satiric talked about that,
But he said it would never be possible.
Well, not never.
It was something about the save state.
🤔(probably already in the thred but ima go at it anyway)
Theres this mod that saves the loco stats like windows and doors i wonder if that would be compat with this then
Such a mod exists?
Yeah last i saw on nexus but idk if its up to date i only had a brief look
It might be a mod to fix te issue of the doors closing when leaving the locos
Which is now obsolete because of Sim
🤔nuts
yeap mod name hold the dore...and its was released 2020 sooooo yea
Have you considered keeping the vanilla trailing wheel for X-X-2 configurations?
if I’m not mistaken you can set that up in the mod settings
Yeah you can
Heyyy satiric, could you possibly send me a beta file of the High speed Berkshire?
I was thinking about making a video with it.
The next update isn't too far away
Alright, if you say so.
Heres hoping it comes atleast next year
Nice. How would I do that?
in the mod config screen (which opens at the start of the game by default) you can click on the slider icon on the line where rearranged S282 is.
I can’t wait for the next update
Neither can I, I'm also enjoying watching this mod evolve.
same, also gives me accurate enough polar express so 8 year old me would be super proud
but can't wait till duplexes
Now we just need a 6-4-4-6 and a prr S1 body kit
the s282 tweaks mod gives it an s1 styled boiler
@tender root is there a setting to change the topspeed of a wheel configuration?
no, you change top speed by changing wheel diameter
Hyce has made the stock S282 do 152
Yeah on that long straight through the steel mill I believe
I keep winding it up to 90 and then I usually have to slow down,
Wait maybe that was with the 4-4-0
Yeah, it was im pretty sure,
I wanna reach it in a Berkshire,
you and your berkshire haha
I've never seen someone so obsessed over a single wheel arrangement
It’s a good arrangement.
The perfect one if anything,
8 large drivers, perfect for both speed and power,
And four trailing wheels to support the massive firebox,
And two pilots just to balence it out
Clearly 2-10-2+2-6-2 is the best
Who knows,
that and also canonically the polar express travels at a average speed of 88mph
Roughly around 142kph
So a santa fe + Prarie
Yes it was the 440
what is the max tonnage for the high speed 2-8-2
about 918t, assuming the vanilla S282 is 1100t
Odd, I couldn’t get up the OWN IME grade with 690,000kg
huh, interesting. But you can get up it in the regular S282 with 1100t?
Yeah,
I had 13 bars
Full cutoff
And I just stalled.
Weird, IDK what's going on there
I was using the 2-8-4 compared to the normal 282
Shouldn't make a difference
I was already kinda going slow,
But the cutoff was full, it shouldn’t have mattered.
Yeah I'll have to look into that. There could definitely be a mistake in my calculations somewhere
I even turned off wheel slip and wheelslide
I should have had the full power of the Fast 2-8-2
I mean, you could just slightly tweak the power of the piston stroke
Well I'd rather figure out why my calcs don't match the game's calcs first
Yeah would be nice to see if any of those tonnage ratings are vaguely accurate
Well I accidentally ran the Atlantic up the same grade
Same 690,000
So the atlantic made it, but the high speed 2-8-2 didn't?
ok I see. Was gonna say, that'd be real strange
I did however make it up the grade when I swapped it to the 2-8-4
Incase it mattered I was pulling 20 empty coaches and 3 aux tenders
Which added up to 690,000kg
Which should still somewhat be within the limits
Do you want me to test the run again?
Might have been a fluke
yeah if you could that would be nice
Alright, I'll use the high speed 2-8-2
same grade,
Say, what is the steepest grade there?
from OWN to IME
Here's a DV grade map. Looks like it's the bottom of the loop https://svgshare.com/i/vxg.svg
the first quarter of the spiral it seems, with the 2.3-2.4% grade there, then it looks to level, then jumps to a 2%, and then drops to a 1.0-1.5 percent grade from there
I stalled on the 2.9 grade
Around here,
Which is weird, because I made it up the 2.8 grade just fine
the 2.8 looks to be half that length though
Was it just simply to much?
maybe
Satiric say the high speed 282 should be around 918
then I guess that particular stretch out of MB isnt much of an option to use closer to tonnage? unless there is an equation for %max tonnage limit reduction per % of grade?
traction is scaled by 1 - 5 * grade / 90
where grade is an angle between 0 and 180 degrees
And what’s the conversion for tonage?
There's no easy equation for tonnage, it can really only be found through experimentation
I was citing the wiki https://derailvalley.wiki.gg/wiki/Locomotive_load_rating_chart
1-Testing start at location 1 with locomotive turned off and completely cooled to minimum shown temperature, no brakes.
which actually says 1130 tons going out of the harbor
Which is a short stretch of 2.4% followed by a longer stretch of 1.5%
Just blitzed through this
ok.... wait
reckon it could be not so much a question of tonnage here, but a question of momentum?
Yup.
Slowly making my way up,
I’m gonna try and see if I can get her up to 60 before it’s too late
Too late,
JUST ABOUT MADE IT TO MB
Almost didn’t make it.
nice, congrats
…I think I’m about to stall again.
In the exact same spot
And I have.
Right here.
So close
So I make it past the 2.9 grade
But not the 1.8????
so, I started with a runup out of harbor with 16 cars worth of steel rolls plus an aux tender, and got this far with the high-speed mikado
so roughly about 1,014 tons is too much for the high-speed, imma knock off a couple of cars. each is worth about 63 tons
Yeah, I only went for 690 tons
imma knock it down two cars and try again
that should put me under the estimated tonnage
it made it after knocking off a couple of cars
the lowest speed it got to was about 17 or 18 kph, it hovered at about 20 when it got to the 1.5 grade and stayed there.
staying at about 12 bar
That wasn’t the grade I was at though,
I know, I figured i would do the harbor test
so the tonnage I did out of harbor was 888, if my math is correct
could abosolutely pull more, though it would be a slog
Modelling is 99% done. Been working on the simulation side of things for the past few days. The front and rear engines are now simulated separately and will wheelslip separately
What's the 1%?
The main rods need to be shorter. RIght now I'm just scaling them in one axis but that makes them look squished so I've got to edit their mesh to make a shorter copy of the existing main rod mesh
In terms of simulation, I have to get the rear cylinder cock particle effects working, the rear wheelslip sparks working, and I need to scale up the weight of the duplexes so that they don't wheelslip quite as bad as they do now
will there be smaller wheel diameters for the duplex
like 2-6-6-2
would the duplex be more powerful? (im not good at train lore)
Yes, Two more cylinders which adds more power
Has long it can also grip the rail
nice
but.. also uses more steam
Also is the new Caprotti valve gear going to change performance of the loco and how?
Duplex gaming
Not in the next update unfortunately
How much more steam does the duplex use?
It's actually Franklin B2 valve gear, like what was put on PRR 5500 and what will be put on 5550. Essentially the American version of Caprotti. It will lower the minimum cutoff from 5% to 1%, making it a little more efficient when the reverser in the middle.
It's still not that much more efficient though. It'll have about 1.5 times the power as the regular S282, but also about 1.5 times the steam usage.
this is gonna be fun to use
Actually technically it'll be more efficient with the reverser all the way forward or all the way backwards, since it only goes up to 80% cutoff instead of the stock 90%. Still uses crap loads of water though
Which is 253 kn
Yeah I forget exactly what my spreadsheet says
Will we be able to change the valve gear?
Nah it'll only be on the 2-4-4-2 and 4-4-4-4
If there's a lot of demand for that though I could do it in a future update
so the x-4-4-x only uses the Franklin B2 valve gear?
Yeah. The original inspiration for doing this, was that making the x-4-4-x would have required significant animation changes to work with walschaerts, and I suck at animation. And the animation for rotary valve gear is braindead simple
k
I still suck at modelling parts in Blender, so I modeled everything in Autodesk Inventor instead
It should yeah
Steam only runs out the harbour just got interesting XD
Yeah that picture was from a run pulling 1500t out of the harbor
The west side?
Yeah
:D
And that definitely didn't feel like the limit, although there are still simulation changes to be made so we'll see
The limit is the job spawning - you can't really take 1500t to one location haha
I wonder if it’s possible to hook every job on the map to a few locomotives and then couple it to the front and then pull it in a giant circle
So a duplex is 1.5 more powerful then the tonnage of a stock 282
Still haven't finalized the tractive effort, but it will probably be about there
which is 1400 tons
How much can the DE6 pull?
but you took like 1500 tons
1400 tons
Huh.
A stock 282 can do like 1130 out of the Harbor ish
@tender root Will you make a 2-8-2 and a 2-8-4 booster
like a tender booster?
No trailing
A locomotive booster for steam locomotives is a small supplementary two-cylinder steam engine back-gear-connected to the trailing truck axle on the locomotive or one of the trucks on the tender. It was invented in 1918 by Howard L. Ingersoll, assistant to the president of the New York Central Railroad.A rocking idler gear permits the booster en...
I've thought about it. Would be more modelling, and I'd also have to figure out the cab controls
I mean
You could cheat out by just making a second lever next to the cylinder cocks,
It wouldn’t change the performance other then making the steam pressure take longer to build I’d reckon
It uses exhausted steam
That's basically how they worked I think. A single lever with forward, neutral, and sometimes reverse. I just haven't needed to mess with the cab controls before.
I thought they used steam straight from the boiler - did they really use exhaust steam?
I mean they could use both,
To make it differ from the duplex you could make it a low pressure unit using reserved steam
Well, if it were realistic it would take damage if used at medium to high speeds
That could be a neat mechanic
Yeah,
Although wikipedia says they can run up to 56 kph
might be nice to take some damage @ 40 or 50 kph too, I don't think we want people doing mainline speeds with it on
man i cant believe how far this mod has come
I can’t believe someone actually went through with my idea
it's been super fun to work on
That has always been a relief!
just wait until i start asking satiric to make different valve gears
It will be Walschaerts and Franklin for the forseeable future
Best case you could ask the same person that modelled the German loco’s to make the bogies
I suppose. I have other stuff I want to do first though. I want to do the tank S282/tender S060, then the S060 arrangements, then make articulated engines, and all that will take a while
Alright,
"a while" maybe being a year or more
"Fast Berk or bust" - 24th Doctor
When will the duplexs be released?
modelling is 99% done, the sim is about 75% yeah. hopefully in a week or two
k
Hey I was close!
Nice!
I mean, there is a large tolerance on these measurements, I'm just guessing
Wait is it even possible to make the 4-4-4-4?
4-4-4-4 is in currently, but with the second leading axle underneath the front cylinders. At some point I want to redo the front valvegear to make enough space to put the second leading axle behind the front cylinders
So you’re not going to extend the boiler?
not if I don't have to unfortunately. I've realized that my original strategy for modifying meshes (looping through all vertices, and moving them if they're in a certain range) is way too slow (it's gotta loop through all 50 thousand vertices on the S282)
If altfuture ever gets around to releasing their EULA, that will hopefully allow me to just package the mod with an updated mesh
Where 👏 EULA 👏 update 👏
Has nobody asked?
Just like, gone up.
And asked em?
In September, they told me they intended to release it "in the next few months". It sounds like the basics have all been figured out but there's a bunch of complex legal stuff they have to work through to release it for real
can one of you's send me the mod
since i upgraded pc parts i lost all of my mods
for dv
congrats!!!
It would be cool if you could change the bogie appearance
To make it look abit better with the x-x-4 appearance
oh, like one of these?
Yeeee
would definitely look cool, it'd be a pain to model though. If someone else wants to model it then it could be added
yeah. I've tried modeling a bogie like an canadian 4-6-4 and uh....
You can see it.in the back and it's just.
Not good-
I mean if you do, all you would have to model is the bogie
Not a whole loco,
Yeah but I mean the bogie I made at the back under the cabnis god awful
Still it’s easier to put your 100 in one thing then a while loco
True.
Just need the right references and prints.
Here give me a sec,
Also, putting this here because I found it super cool - everything you ever wanted to know about booster trucks http://users.fini.net/~bersano/english-anglais/locomotive_booster/locomotive_booster.pdf
I am gonna sound really dumb here, but once they get the Diesel Electric Sim back up to par, what is the chances of being able to mess with the axel count of the DE6 and potentially have it be able to work as a DE4? I have no knowledge in how diesels are designed though.
Shouldn't be too hard, if the simulation is anything like the steam simulation. Again the tricky part is the modelling
Here they are
I’d just advise hollowing them out.
And only worrying about the visible outside
The second and third photos are of booster trucks, which look a little different then a regular two axle trailing truck
Almost negligible amount,
The only thing that would have to be removed is the small boiler assembly
The general frame however is the main focus
Because this is is what a normal trailing truck looks like, but I don’t really see a difference
Actually now that I think about it.
If a two truck was modeled you could actually extend the firebox
The hudsons class has 2 different wheel sizes in the back truck and have abit more spacing between them
And physically stretch the firebox model
The model was a niagara
Fair.
No I mean this is a niagara
You could make the floor of it deeper because the trailing truck isn’t connected to the firebox
I mean for the SH282
You mean, strech the firebox without extending the boiler? The boiler is really tricky to stretch there because of the turret and the dynamo, and all the steam pipes around there (and the whistle cord)
I mean, technically both?
But mostly the firebox
Let me get a side profile of the SH282
As you can see, there's a ton of crap there that would need to be figured out. It'd be a lot of work no matter what
I mean you could also cheap out and not move the anything.
wasn't planning on it tbh
Stuff like the dynamo.
If you do lengthening the boiler
Just leave it all in the same spot
But something like this
Where the firebox basically rubs against the trailing truck
Because it’s supposed to
I mean going back even here the only point of the trailing trucks is so the engine doesn’t tip backwards
It’s not actually connected
But for the most part, you could make the “extended” firebox purely a extension
Here have the new firebox model be its own separate piece (marked in red) and have it connect to the normal SH282 model (highlighted in green)
All the green would just be the model shifted back
And the red would be new/extended parts
Well I'd still need to mess with all those steam pipes + the whistle cord if I move the cab back
I mean just make longer pipes
To me the easiest place to extend the boiler is here
nah I think you're right, that moving the cab is the easiest way to extend the firebox
We could even make it longer
If you have to move the rear coupler, that could mess with spawning
Or just make it less weird,
Actually, we wouldn’t have to I don’t think,
We would just have the cab overhang
If you move the cab back, you move the coupler
otherwise the cab clips into the tender
I'm not haha
…ye of little faith!
Could move everything but the cab up, but then you have the same problem with the front coupler
I mean it’s like when this all started!
Like with the gauge mod.
The code exists
It just needs to be heavily altered
Well, I've never done mesh alterations this drastic. Keep in mind that all of these mesh changes still have to happen at runtime
Good point,
Actually,
It should be fine.
Now that I think about it.
There was a mod a while ago called 'Cut pasengers' or something,
It made the coaches smaller for pax mod
The coaches still spawned and were still connected for their jobs.
while the SH282 isn't a coach,
I'm sure the game could adapt to the change in size,
for the actual making of the mesh,
...
that would have to wait for the EULA....
Pretty sure it does,
Does anyone have the chart that designates the tonnage for each wheel arrangement?
On the mod page
Might be inaccurate though,
How long till duplexes
At most 3 months from now
And at least the end of the month
Do it properly the first time or don’t bother.
Or just cheap out because there is a level of effort that is just redundant.
If it means that the model looks weird and incorrect at a visual and engineering level, then it does. Be patient and let the modder take the time to do it right, that’s all I’m saying.
I’m not rushing anything, I’m just give solutions that are more “simpler” in nature.
Fair call, but you also want it to be visually correct, appealing. I like the idea itself. A quicker way to get configurations not available yet, particularly duplexes as you’ve mentioned before.
I never wanted the duplexes?
Everyone else did.
I can’t wait to see it in the game!
But uh,
I just wanted a Berkshire and Pacific wheel arrangement.
A pacific with large drivers for speed…. Will go well with the future planned straightening of some sections of track 🙂
Berkshires from any particular country?
USA,
The Japanese and Austrians had some interesting Berkshire designs. We even had a tank engine here in Western Australia of the 2-8-4 Berkshire configuration. The “K” class. Nowhere near as impressive as what the Americans had and still have.
How is the mod going Satirtic?
it's going good, main thing I'm trying to figure out right now is why the rear driving wheels aren't clocked right. Which is the only major thing keeping the duplexes from release
Damn wheels-
We need you wheelin and dealin
We need a 4501, 611 and T1 triple header since we can't do the 1307 we can take the T1.
Been wondering, should the duplexes still make the valve gear sound that the default S282 makes?
Yeah,
I mean you could slightly lower the chuffing sound
The pitch I mean
Unless it doesn’t use vented steam
it doesn't use steam, it's just the sound of the walschaerts valve gear clinking
No I mean for the actual chuffing
Well I was wondering about the valve gear sound
Hmmm
the sound that people confuse with the "cylinder's got too much water" sound
I’d say yes for the people who are big train nerds and would appreciate the different
as in, yes, the duplexes shouldn't have it?
Oh I thought you meant a whole new sound
nah, I was just gonna turn off the regular valve gear sound, or turn it down maybe
alright
Do u plan to go past a 4-4-4-4?
I recall Satiric considering a 2-6-6-2 I think.
But the drivers would be tiny
Tinnnnyyyyy
I mean if you look here
I’m not actually too sure how much space there would be
Might be able to pull off a 2-4-6-0
Which…. Did exist?????
Huh.
I was considering 2-6-6-2 and 2-4-6-0. Not sure if anyone ever made a 2-6-6-2 duplex (there were definitely articulated 2-6-6-2's, but no duplex ones)
For now it will just be 2-4-4-2 and 4-4-4-4
actually I don't think anyone has ever made a 2-4-4-2 duplex either, but it looks a bit better than the 4-4-4-4
The pennsy also made a 6-4-4-6, a 4-4-6-4, and a 4-6-4-4, but all three of those would be pretty tricky to fit into the game
Is it going to take damage after 40-50 kmh ? I recall seeing a convo on that earlier
Will we see the S1?
I haven't looked into how the damage works actually. But no, it will hopefully just take damage at a reasonable rate. I don't want to punish people for having a good time with it
Alright
Probably not, the 4-4-4-4 is pretty packed as it is. Drivers would need to be pretty small
Looking forward to the release of it, gonna be fun using it out of the coal mine // harbor
Doesn't the t1 and s1 have the same driver size?
Nvm s1 has 84 t1 with 80
Even if they had the same driver size, there's no way I could fit 3 leading axles and 3 trailing axles under the S282 without extending it somehow
Or decreasing the driver size to make room for the leading and trailing axles. But it would feel weird to make an S1 with, like, 48" drivers
Keep in mind the vanilla S282 has 56" drivers. Shows you how massive the T1 and S1 were
You know what you have a fair point
Alright well keep uo the amazing work either way!
Thanks. I appreciate the suggestions and support
is this actually in the mod rn?
or just a sneak peak?
Its so cursed, its perfect
Cant wait to triple head everything out the harbor with these things
BTW if you want to see a 2-4-6-0 in working order...
#vehicles message
Not yet, I'm working on it. Hopefully won't be too far away now
sweet
The limitation isn't the locomotive, but the job spawning system lmao. It's tricky to find enough freight going in the same direction
Thanks for sharing this. It's articulated right?
SM To HB usually long long lines of rails
True
I think of that route as mostly downhill, but it does have quite a bit of uphill
Oh I meant from SM to MB to HB,
Speaking of which, did you ever figure out why the Highspeed 282 couldn’t get up that grade?
Nah only been working on the duplexes
Actually question, could you make a 2-4-4-4?
If anything I'd make a 4-4-4-2. I've gotten the leading axles to look good, but it's tricky to get the trailing axles to look good. But I'm trying to stick to things that actually existed
Pretty sure it has,
Got a pic?
I’m looking it up,
Huh guess there wasn’t?
I still don’t think it would look bad, but eh.
Yeah, they're mallets so compound too, with the rear ones being high pressure and the front low pressure.
Ah. Might put it in when I eventually get to articulated engines
Wikipedia has some pics too.
https://commons.wikimedia.org/wiki/Category:MD_450_→_CP_E200
I mean you said you were going to make the 4-4-4-4
which is an arrangement that did actually exist
True,
Its just nice to hit all the bases.
Could you render it aswell when you get to it?
Just render it,
Who uh- said wnything about berkshires
I mean, it's got 2 leading wheels and 4 trailing wheels
Fine fine,
and eight drivers
I Do wonder when T1 Streamlining will be made for the SH282
PSR with steam and make big circle
If you’re going to go to the effort of modelling an entire t1 casing for the S282 which is much smaller than a T1, then do it properly and model an entire T1.
Do you know how hard it is to model a whole locomotive?
compared to just...
making a mesh to put over the loco?
It won’t look right. The T1 is physically larger than the S282. And as far as modders making a whole locomotive, there’s modders doing that in the mod development thread right now. I don’t have the time unfortunately to learn the ins and outs from scratch 😦 or I’d give it a crack for you.
Making a whole engine (which can't even really be put into the game) compared to a fun addition to the SH282 seems overkill.
Not the point,
I suppose you could, but you’d have to get all the proportions to look right.
I mean, its techinally already been done.
The S282Tweaks exist.
and it echos the S1
I’ll have to have a look 🙂
I just meant something similar,
Even without the duplex arrangment
Having a streamlined SH282 sounds fun
I did read somewhere that Derail Valley is narrow gauge?
....it shouldn't be?
Last I checked its standard gauge.
it just has a diffrent loading gauge.
Thanks 🙂 wasn’t sure. I’ll have a look at the S282 tweaks mod and try and change my way of looking at putting a T1 style body on the S282. In the real world, South Australian Railways did build a loco in the style of the T1, the 520 class, so I guess there is precedent.
I mean it is the same logic as the reason why I wanted this mod to exist,
Of course you could just 'model the locomotive you want..' but for people that don't want to model a whole locomotive, or people that want the SH282 Itself to have those wheel arangments
They can.
If someone wants a German pacific? now they can grab a German skin of the SH282, and then use a smoke deflector mod and this mod
Wether if be people want a german locomotive that isn't a mod, or people want to see the SH282 look more german,
they can.
I’ll have to try it 🙂
I’d find the mod for you but I don’t actually know where to start,
Just ask around in mod’s discussion,
Or look in one of these posts
Actually…
Wait no found it.
If someone doesn’t make a T1 streamline for the SH282
I’m definitely using this,
@tender root Question will the duplexes have a higher speed?
No, the wheel size will be the same as the regular S282 so the top speed should be the same
So they just... pull things faster?
More power, not more speed
They can pull more without wheelslip
...
It just has more power
It doesn't?
It makes perfect sence to?
You won’t go 240 just because you have 2 DE6es
Wait does it mean that I can reach its top speed faster?
Yes
But it doesn’t make the top speed faster
what is the SH282's top speed anyway
120ish
120?
((without death
Yes
Yes.
I do that whenever I can
((on the vanilla map?
Gotta get that bonus time ya know
I've never been able to get it up to 120,
It is hard to hit 120 with a load that’s close to tonnage
Ah,
But it is possible
That’s basically nothing for the S282
Tonnage for it would be between 1200 and 2000t, depending on the grade
forgot a zero there,
Then explain why I couldn't get up the +3.5 grade
Bad firing and steam management I guess
I HAD 12.5 BARS
Cutoff is a powerful tool if you know how to use it well
Well which do I focus on?
Maintaning 12.5 bars?
or having the cutoff at 100
The simplest way of doing things is to just keep shoveling coal and the cutoff full forward
I usually try to maintain 12.5 bars while having the cutoff as full as you can,
Although that uses much more coal and water than necessary
Thats what I use to do,
Not a good idea
For cruising
But people told me that that was a bad idea,
and its 'slower'
It uses more resources
It does,
That’s basically it
No?
Its 13.
The safety blows at 13 bars
Then I guess it’s the S060 that pops at 14
So ripping down the line at 80kph with 6 bars is not fine?
But for more efficient steam usage: full cutoff uses much steam and gives you much power, close to center uses much less steam but uses it more, allowing you to go faster
Usually I try to get to full throttle as fast as possible and then run the engine using only the cutoff
That’s how real engines are run
So how do I go fast?
Full throttle and cutoff as close to center as you can get it without decelerating
Even if it keeps popping the safety valve?
Yes
Popping the safety means you are at full pressure
Which you basically always want to be at
So opening the cutoff to stop it from constantly blowing is a bad idea?
Not necessarily
Isn’t that technically wasteful?
It is
Your just letting steam constantly blow,
If the safety pops a lot, throw less coal in the fire
…using all that logic,
Why wouldn’t the duplex be as fast as something like the T1?
Driver size
…wait really?
Yes
It is
Nope
There is an upper limit for that, but it depends on how well the connecting rods are built
So even with several pairs of drivers on a duplex.
Spinning.
As fast as possible.
It still won’t be faster?
Not as long as the wheels are bigger
So with this final logic,
Would I not pull a load faster in a duplex then a normal SH282?
It does
What about a 20 ton load
If you give the SH282 a load it can’t pull
Then it won’t move
Would a duplex not pull it faster?
So would it not technically be pulling the load faster than a SH282 could?
Is 0kph not slower then literally any other speed?
I was talking about relative speed
Oh
Would I not be able to to achieve the SH282’s topspeed in the duplex effortlessly?
It would be easier to pull loads
Yes
It isn’t
No
It’s limited by driver size
Of course, it will accelerate slower with bigger loads
But it will eventually reach its top speed
But would it would not reach it top speed
In a perfect world?
Even in an imperfect world
But everything isn’t perfectly levelled.
True
Assuming the track is flat, regardless of weight (of course if it is actually below tonnage) both the S282 and the duplex would reach the same top speed
The duplex would achieve it faster though
Assuming the track is a normal track like in DV,
Why would it not be faster?
Because of driver size, again
That just gives more power
stop asking about 50 different components of a steam loco
beef has said it is DRIVER SIZE
duplexs have more power
not speed
it aint that hard to understand and read
Would this power not in turn give more speed?
no
No
Speed and power aren’t always linked
there is a certain rpm, loco drivers can operate without throwing rods
large drivers means less rpm per steam usage
the can go faster without wrecking itself
But DV doesn’t simulate that.
Self destruction? No. Driver size mattering? Yes.
So would having more power not contribute to high rpms?
exactly
Speed and power aren’t always linked
So no
It feels like school has failed me.
If the stroke was made smaller so that where the main and connecting rods met the wheel was closer to the center, then it could go faster, but then you lose torque.
The vice versa with the same thing, you get more torque, and less speed.
If I am remembering that right.
If I'm wrong on anything, please correct me
Well it doesn’t make you go faster, but it makes you run more efficiently
Huh. I was thinking it went by similar rules as gearing, I guess not.
The factor that limits how fast an engine can go is the driver size
500-550 rpm apparently in real locos. If you calculate it out Mallard was pushing 529rpm when she set the record of 126mph and she broke down doing that. For the Doctor, think of driver size like gearing in a car. My Ute could theoretically pull 6 tons but it would have to do so in 1st gear (small drivers, high tractive effort, low top speed at 550 rpm or revolutions per minute of those drivers). Now I could not start that same train in 6th gear at all (larger drivers), but I could start half ton load that way and accelerate it to 100kmh, like a passenger steam locomotive with large drivers (high gear). I can attain a higher speed with larger drivers but my pulling power is lower. This is why freight steam locomotives have lower top speeds, higher tractive efforts and therefore more pulling power for large freight trains, than their high top speed, lower tractive effort passenger train breathren. Does that make sense?
yeah but they can throw rods if they get too fast
Yes they can (Happened in a catastrophic way to a Milwaukee Road Class F7, which were likely faster than Mallard but never officially timed) but the physical rpm limit for a steam locomotive due to the way steam flows, expands and reacts in a steam engine is 500-550rpm. If you’re pushing beyond that, then you’re out of control running downhill with gravity taking charge, or you’ve implemented Chapelon and Portas ideas in a modern clean sheet steam locomotive and found a way to beat physics. Failing that you increase driver size to get a higher top speed.
yes
To be more precise, Mallard didn’t bend its rods, but the journals heated up too much
I know I wasnt configed at any point
What was the fastest steam engine? Let's join the discussion and learn some things about high speed steam.
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For the curious
Can you remind me if she had roller bearings?
I don’t actually know, but I doubt it
Nice link 🙂
I wonder if the Q2 will be possible
duplex 2-6-6-0 using the tiny x-12-x drivers
Duplex update is finally ready, as far as I can tell. Can a few of you double check that it works OK on your machines before I release it? You'll need this Loco Mesh Splitter mod as well in order for it to work
works fine but no brakes when indepent is applied
or they dont show at least
hmm let me take a look
power
Hmm, they do seem to at least stop the locomotive, at least on my end. Do you mean it doesn't show in the HUD mod?
they don't move in vanilla derail valley either
Adhesive weight matters more than # of axles. Brakes are useless if they just lock up the wheels
true
The duplex is about 40% heavier to compensate for the extra power, looks like the independent brakes on the duplexes are about 40% stronger as a result
ah
Same with the train brakes. Looks like it's a function of total locomotive weight, not of adhesive weight
That's how it is without doing any changes to the braking sim, anyway. I could be persuaded to change it if people want braking performance to change with adhesive weight
Here's the change log
nice
The 4-4-0 currently in the mod doesn’t have that
im assuming the 2-6-6-2 will come as well at a later date
Regular S282
Rearranged S282 duplex. Pulls anything anywhere.
Now all we need is a Pennsylvania livery,
Yes,
I mean honestly?
I just wanna go 100mph in DV
The speedo only says it can go 120kph
Nowhere near 100
We should be able to at least reach 145kph
american map when
Anyone got estimated tonnage for the duplex yet? lol
omg, 4-0-4: drivers not found lol
it was the last option, after the 4-4-4-4
I found a bug! or two
So, I applied throttle with the 4-0-4 no drivers, then switched to the duplex, and the throttle wouldnt apply throttle no matter how far I moved it. It then suddenly fixed itself when I messed with the reverser, and there was apparently water in the cylinders, and I busted the back end of the rear right cylinder before I could get the cylinder cocks open as the locomotive launched forward, and turns out the busted cylinder effect for that cylinder is underneath the cab
also, the tender derails before the 4-4-4-4 does, I got to going 60 out of harbor on the uphill 40.
Lmao
photo of the busted cylinder effect
How slippery is this boi BTW
no clue, I was trying to get the auxillary tender hooked up, and I had no weight to speak of when hell broke loose
she almost made it through this 40 curve going 80, and derailed as she was coming out of it
I know I was going 60 through the inital 40 section when the tender said screw it
So, I guess everything else will derail long before the locomotive does
70! the locomotive can do 70 around a 40, but no more
with the 4 pilot and 4 trailing wheels
roughly
lost the tender just before the last switch between the southernmost track between sawmill and harbor and the loop, ran out of water and coal, derailed twice, and still made it to the summit of the loop
I was also not being effecent, I just hail mary'ed it all the way
imma see if i can recreate this later, and actually record it if i can.
Interesting. I didn't think it was possible to bust the rear cylinders so I didn't bother fixing the position of the steam particles for that
Might happen when changing from other arrangements to a duplex as well
I believe the valve gear noise should be gone. Can't remember if I got that working or not
What’s wrong with cutting corners?
It makes things smoother,
1719 tonnes by my calcs (assuming 1130 for the vanilla S282, like on the wiki).
2-4-4-2 has a factor of adhesion of 4.21, 4-4-4-4 has a factor of adhesion of 3.38
Which means the 4-4-4-4 is about as slippery as the 4-4-4
I'd expect the extra power from using just 2 drivers with the same cylinder size would make it easier to slip.
The 4-4-4-4 would be applying twice as much power to the rails as the 4-4-4 at a given time.
Oh well.
Duplex cylinders are a bit smaller, and the max cutoff is less
Can they desync BTW?
Yup
Nice
The limitation here is the weight - I wanted to make it as powerful as I could while still keeping the weight of the locomotive reasonable (I.e. not too far away from the vanilla S282). Already I've added 50t to the duplex to keep the wheelspin in check
Yeah
Fun is about to unfold,
Ah yes, the 9000km length of the valley in one go.
Yes.
This is intended (but a little weird, I know). I wanted to make the locomotives with more leading and trailing wheels derail less, and the 0-8-0 etc derail easily. But I'm not altering the physics of anything behind the locomotive, so this happens with arrangements with more leading/trailing axles than the vanilla S282
We need a prr skin now,
Unless there already is one
How many coaches did the T1 pull?
I’m going for 51
I just busted the rear cylinders
There are already a couple; made sure they looked good
I meant more of a PPR streamline skin
Looks surprisingly good with the german livery though
yeah neither PRR skins are quite right but they're better than nothing
Could I have the link to them?
Thanks!
yeah katy did a good job with those they look great
Gotta say,
In a vacuum,
The Duplex is amazing,
It feels like I have more access to steam,
Which is weird,
well fuck
can you send your log file?
!log
well the bot isn't working but it's in %localappdata%low\Altfuture\Derail Valley\player.log
Got it working after I shutdown some apps
Log would still be useful.
Do I put in the perv player.log has I started the game again?
Yeah
Can only use notch 3 on reg to start
Man this is a weird one. IDK what's going on here
That one is a spicy meatball
I had the game crash on me once or twice during development, but it's never been repeatable, and IDK if it was related to my stuff or not
sometimes after leaving the game open for a long time in the background IIRC
Did this happen when you loaded into the save, or after playing for a while?
When I was trying to start the game
Are you on Windows?
Actually side note, why does it seem the duplex builds steam faster?
Is that intentional?
windows 10 yes
Boiler sim should be exactly the same
Odd,
There's more airflow through the exhaust, so it will be a hotter fire once you get going
But that's only when using steam - when stationary or coasting, it should be the same as the vanilla S282
Well, that’s not what happening,
I’ll have to run more tests, but it definitely feels like I’m gaining steam faster
Perhaps it has something to do with valve gear?
Because not only can I keep the cutoff closer to the corner, I can do so without even worrying about killing the steam pressure,
Ok, there is currently only one issue I have with the duplexes, that being the light that illuminates the drivers cant illuminate the front drivers, and barely does anything for the rear drivers
two ideas to fix this could be to either add and move the current driver light, or maybe add platforms to put lanterns?
Jesus Fucking Christ Satiric, took 1400 tons out of the steel mill to the harbor (without rain), the loco managed to go at bloody 50 kph up the grade without any noticeable struggle
lanterns would probably fall off unfortunately. could look into adding another light
yeah the limitation isn't the locomotive, but the job spawning system lmao
gotta go all the way across the map if you want to push it to its limits without spawning stuff in
The limitation is the fuel,
It is,
Definitely need a coast to coast tender though,
I run out of coal way to quickly, I know I’m not running at peak efficiency but man,
I mean, thats more on the operators skill has I have 10.1 water left (forgot the injector) and 20 something coal after the run.
I mean, I was expecting to do a whole trip from CSW to MB to HB to CSW,
Did not work out.
MB?
Military base,
Right here,
oh, i'm blind
S282 Coast to Coast tender (real)
Yes
yes
Look at him go lmao
Magic technology
Yes need
Well it'd need actual models first.
I need this,
Wait does the aux tender work with the s282 without the main tneder
Probably should be a bit smaller,
Like a replacement tender
No idea,
I need
maybe if you coupled it to the front. Wouldn't have any coal though
Coast to coast tenders should be the same length as the loco they are made for im pretty sure.
I might try make a large map in mapofy of I get too bored this weekend
Cab forward s282?
I just doubled up the scale and copied the bogies, let me see the actual length
Dammit wiki doesn't have it
I think the vanilla tender is 0.75 of loco
Ah it does
Looks to be about that anyeay
Yeah, that’s usually the normal proportions for loco’s
13.15m loco, 8m tender, thus 16m C2C tender.
The tender is usually 2/3 the size of the loco,
Probably should make it the same length,
Like exactly 13m
Didn't know there was like proper proportions for things like that
I mean just look at any picture of a locomotive from the side
True
The tender is almost always 2/3 the size,
Unless it’s just as long as the locomotive,
This is the fk around and find out type of tender.
The second it hits a turn,
Would 100% have to make custom bogies.
Even the big boy applies
About half the size,
Just a bit more the half,
Proper CCL and CAT (custom aux tenders)
PRR long haul tenders were very long though
Measured that one, comes out to almost 1:1
I was just chatting with lass, about admirals coast to coast tenders,
Builder: how long would you like your tender?
Prr: yes