Whats The Problem here?

[alx]

I've asked this before and gotten no help at all.
I have an Electric Stampede with a Mamba Max in it.

When I Spin one back wheel the other stays almost still. Shouldn't it be turning the other way?

When I spin the spur gear without the motor in the car the left wheel is moving faster than the right.

When I put one wheel on my knee and spin the other the one on my knee doesn't even feel like its trying to move. Shouldn't it be trying to go somewhere?

The left wheel is getting so much more power that it literally melted the plastic hub adapter inside the rim.

I've been stuck with this car for a while now. Whats Wrong!!

Any help guys. :surrender

 

[BOUTCH]

just an idea...

I'm not 100% sure but maybe your differencial is gone BYEBYE!! Dont panic...I'm not sure. Hope that somebody can confirm that for us!!:surrender

 

[nitrogator]

i was thinking the same thing but not sure but it sure sounds like it is gone

 

[beason]

sounds like the diff is loose or needs a rebuild. i think the stampeeds have a ball diff so you could try tightening it up

 

[alx]

Thats what I suspected. Thanks for the quick responses guys!

I'm gonna assume its crapped out and go buy a new one tonight. Ill let you guys know!

If anyone else wants to confirm its the diff please go ahead.

EDIT: SO I PULLED THE DIFF OUT
How do i check to make sure its dead. How should it normally behave when i turn one of the sun gears.? I want to make sure its legitimately dead.

 

[HeartBreak]

While the diff is out, make sure that both wheels are rotating freely. Sounds like a bound up wheel to me.

 

[alx]

Ok.. I'm not sure what you meant there but here we go. I've got the diff out. I put the drive shafts on each side of the diff. Heres what happens.

When i hold on to the diff casing and spin one drive shaft the other spins at (What looks like) an equal speed in the opposite direction.

With my thumbs on the diff casing if i try to turn both drive shafts froward it wont budge.

I dont think that sounds like a broken diff does it??

 

[alx]

anyone wanna take a stab at it? I've taken apart the diff.. re-greased and re-assembeled completely and nothing seems wrong with it.

 

[ohmygahitscoby]

If you can run your car with no problems, you'll be fine. It could be that one of your wheels are screwed on too tight or the suspension arms are too tight. This happened to me.

 

[alx]

Well the only reason I'm concerned is that the plastic hub melted to the rim on the left side and thats the side that spins faster when i flick the spur.

So i think its getting a substantial amount more power than the right wheel which might be affecting top speeds and acceleration... I might just get some aluminum hubs that would stop the melting but I'm afraid it might just strip the rim out.

 

[ohmygahitscoby]

If the hub melted, you would definitely need a new one.

 

[CharliesTheMan]

I think it might be worth checking into the source of the heat that's causing the hub to melt before you put the aluminum hub on. It could cause a lot more damage if there's something rubbing, in a bind, broken, or something like that.

 

[alx]

What could be causing that much heat to build up there? Anyone know if there are bearings at that connection that would do it?

 

[beason]

check the bearings in the axle carriers, also make sure you dont tighten up the wheels to tight, the rc10's are bad about that.

 

[olds97_lss]

If you have one wheel spinning harder than the other, then there's a high likelihood you have something binding on that side of the drive train. With the diff out and the wheels no longer connected to the diff, do both wheels spin with the same force? Or is one still easier than the other.

 

[alx]

They both seemed to spin for the same amount of time with one solid push. I've just assembeled the truck again and if it does it again Ill take it into my LHS.