AMP Buggy- One rear wheel not spinning

Messages
2
Likes
0
HI all, new to this forum (and RC in general). My son has an ECX AMP dune buggy. Lately, he has had an issue where one rear wheel will spin when the throttle is pressed, but the other wheel spins slowly or not at all. When I turn one wheel backwards by hand (no throttle) the opposite wheel spins in the opposite direction, which I gather is what is supposed to happen. I don't know much about these, but I can take stuff apart and get replacement parts. Could it be the differential? Or some sort of seized bearing on the non-spinning wheel? Any advice greatly appreciated.
 

X

Conspiracy of One
Staff member
Supporting Member
Messages
995
Likes
335
Remove the wheel on the side that doesn't move with throttle. Take a look at the hex on the back side of the wheel as well as the hex hub on the axle. Are they stripped? Make sure the pin is inside the hex hub as well.
 
Messages
2
Likes
0
Remove the wheel on the side that doesn't move with throttle. Take a look at the hex on the back side of the wheel as well as the hex hub on the axle. Are they stripped? Make sure the pin is inside the hex hub as well.
Thanks, I will try that tonight! However, when I was messing around with it last night I noticed that the axle, on the side with the non-spinning wheel, was also not really turning. This leads me to think it's an issue with the gearing or differential, but I don't know very much. I will let you know what I find.
 

X

Conspiracy of One
Staff member
Supporting Member
Messages
995
Likes
335
Thanks, I will try that tonight! However, when I was messing around with it last night I noticed that the axle, on the side with the non-spinning wheel, was also not really turning. This leads me to think it's an issue with the gearing or differential, but I don't know very much. I will let you know what I find.
That being the case, it could certainly be the diff or perhaps the bearing on the outdrive of the diff on that side. Another thing to look at is the set pin for the driveshaft, perhaps it fell out? Number 48 below.

1544130607775.png
 
Top