My e-revo brushless edition build

[mistercrash]

I already have LST XXL diffs in my E-Revo, I have been running them for a long time in Revos and they always have performed flawlessly. Since I recently made a LST conversion to brushless, I have a lot of spare parts for both trucks lying around. So I started slapping things together as an experiment and the result is very interesting.

The reason I did it was the LST diffs. I always thought that the rest of the LST drive train would be so cool to have on the Revo but I always thought it would be too difficult. First thing is to replace the Traxxas slider shafts with LST XXL CVDs.

This is a stock Traxxas Revo axle carrier with a LST 15X21 mm bearing pushed in it. It fits very tight but it does fit.


The outer 8X16 LST bearing won't fit in the carrier so the hole would have to be enlarged. It could be done easily by someone who has some machining equipment.


I didn't want to mess with the stock carriers so I tried with a RD Racing carrier instead which uses 16 mm OD outer bearings. The inner 15X21 bearing fits in the carrier a tad loosely. A thin sleeve would be needed to get rid of the slack. For the experiment, I just put one layer of Gorilla tape on the outer race of the bearing and it fit in the carrier perfectly. So the sleeve would have to be pretty thin.


The axle sticks out a lot from the carrier so a thick spacer would be needed to slip on the axle between the outer bearing and the hex drive. For the experiment, I just used two 8X16 bearings and three thin shims.

I don't know what the axle sticking out this much would do to the bearings, but when I put a zero offset Truggy wheel on there, it is just 3 mm narrower than the stance of my E-Revo with 1/2 inch offset wheels.



I used one of Monster Mike's hardened steel drive cup with a 6 mm bore to fit on the output shafts of the LST diffs. I made the output shafts from Traxxas stub axles so this set up could actually be used with stock Traxxas E-Revo diffs. The pic shows the suspension at full extension. The pin from the shaft is still well into the drive cup so I think it would not pop out like the Traxxas CVDs do when using the extended rear arms (frog legs)


I did the rear and it works very freely with no binding. I haven't done it to the front yet but I suspect that the LST CVDs won't have enough articulation to work with the amount of steering throw I have on my Revo. We'll see.

For the middle shafts, sadly the LST middle shafts are a bit too short.


But this could be dealt with by having a slightly longer shaft coming out of the tranny. If there was a way to make a CVD shaft fit on a middle shaft hub, it would solve the problem since that CVD looks to have the right length.


This is for the rear middle shaft, for the front, I still don't know, something custom would have to be made I suppose.

This is it, just something I did this afternoon 'cause I was bored.