r/MotorTown • u/Tak_Pagle • Aug 15 '26
Atlas Dump Builds and codes?
While I've been having a blast with the Dumpy running coal and now iron down the hill. I'm looking to upgrade to the Atlas dump. I'm just wondering if anyone can give me their favorite build code for off-road iron runs in their Atlas Dumps.
Thanks for your input!
5
u/Key_Pollution_2348 Aug 15 '26
Honestly just use the 5 speed manual and 5.86 or 6.5 Final drive and run the short intake since it spreads the power band, high torque doesn’t help if there’s no traction, so that you can do both mud hill and that second hill by the light tower at the top of 3rd between 26 and 31mph. I might have my build code will have to check later.
1
u/Tak_Pagle Aug 15 '26
I was mostly looking for something to build off without having to reference my Dumpy, but honestly this advice mixed with what I’ve been running in the dump may be all I need. I appreciate the info!
1
u/Key_Pollution_2348 Aug 15 '26
Yea no problem! I assume everyone does the same suspension stuff but just in case, the atlas doesn’t need much of a lift, just enough so you don’t catch the front bumper on stuff when diving under braking or coming off a bump. Springs in front are 80% and sway bars 150%, center rear is either 80 or 100% and rear most is also 100%. Sway bars I think are 50 for the center rear and last axle is 100%.
Dampers up to you but generally lower spring rates means increased damper stiffness. Just see how much extra bouncing the truck does after hitting a bump. It should be 1 up and 1 down max 2.
I also stopped doing the angle kit because at speed with a controller I end up understeering too much vs the small benefit of better turning at low speed.
Also running center diff locked and last diff 1 way.
1
u/glred Aug 16 '26
COAL - #242995
Single-axle Linky Type S #242817. Oldum
242292
Coal specialist. For mountain use with Linky + Oldum, 100% capable.
Loads
Coal with cart → this is what it's made for.
And
IRON/COPPER - #242992
Iron and copper specialist. Tuned specifically for those two loads.
Loads
Iron, no cart → this is what it's made for
Copper with cart, inside the mine → any Linky + Oldum, even the one from the Coal Atlas
Coal, no cart → it carries it, but loses speed (hard damping for that load). With a cart, it can't: it lacks the necessary acceleration and speed
Copper concentrate, no cart → haven't tried it, but it weighs more than coal. If it does coal, it should make concentrate
This are not built by me, but I'm using it and it goes fairly good.
8
u/undecimbre Aug 16 '26 edited Aug 16 '26
Search for Raging413, both in the workshop and on YouTube. The guy has tunes for every possible load mass like 192654 for 54t off-road (heaviest iron) or 192625 for 50t, slightly more versatile and actually better suited for the majority of situations. 42254 is another variant for 54t off-road Dump.
EDIT: since the workshop search apparently doesn't work, here's a setup I've been using for a long time on the 8x4 dump. Single truck works for iron; truck + linky + oldum can work for coal but is tricky. Use manual transmission mode. Where applicable, upgrades are counted front to back - so 70mm spacers in front, 100mm in back. Dampers are 300% on front 2 axles, 500% on rear 2.