Rear differential issues?

[Kanine38]

So, I notice that my rear wheels don't spin when I get a little bound up. So I start by lifting the front wheels a bit and hold the crawler back to see how much power it takes to make the rear wheels slip. With only a little throttle, the wheels offer no resistance and either the wheel hexes are gone or the differential has a problem. The driveshaft turns and I have previously CA glued one of the wheel hexes. Since both wheel are slipping, I think the rear diff is shot. Thoughts? Am I wrong?


This is a stock Axial and stock diff.

[cr500rider]

Take it apart and have a look see

[racerjim]

check that the driveshaft is still tight to the diff. mine come loose all the time, even when using blue locktite

[Kanine38]

Originally Posted by cr500rider

Take it apart and have a look see

I really didn't want to do that until someone backed me up on my diagnosis.... Yeah, i'm a p*ssy.

[Kanine38]

Originally Posted by racerjim

check that the driveshaft is still tight to the diff. mine come loose all the time, even when using blue locktite

See, It's the simple things I overlook...

[Kanine38]

Originally Posted by Kanine38

See, It's the simple things I overlook...

Bingo! The set screws needed to be re-locktite'd. Thanks.

[cr500rider]

See you can't be afraid to tear in and have a looksie thats how you learn it's usually the simple things too start there and keep going till you find the prob

[Kanine38]

Originally Posted by cr500rider

See you can't be afraid to tear in and have a looksie thats how you learn it's usually the simple things too start there and keep going till you find the prob

I really dont want to open up the diff until I put an underdrive gear set in it.

[ultimate_monkey]

why not?? all thats in there is a few bearings and a carrier for the locker, its not like a tone of little peices are gonna fall out

[cr500rider]

Yes air I agree its really a simple set up and I like to do it right away anyways and grease stuff real good (doesn't seem like they put much in them when they assemble) You still have your manuel don't you ? it has an exploded view in it or you can download it from the axial site

[2500hdon37s]

IMO the Axial axles are super simple! they take all of 15 min to take apart, clean, regrease/ replace a part, and put back together!

[Kanine38]

I just had rebuilt the shocks and taken apart the rear section a couple of times and I really didn't want to do it again... basically, I was lazy.
I will be taking apart the rear axle to run a underdrive gear set. Should I replace the locker at that point also or are they usually good to go?

[cr500rider]

It should be good to go for a long time unless you have sheared it off or something just regrease ring and pinion real good after you replace them good luck (and get used to tinkering it's just part of the hobby) make shure your shimmed correctly when you do the ring and pinion swap

[ram_tough]

Originally Posted by Kanine38

I just had rebuilt the shocks and taken apart the rear section a couple of times and I really didn't want to do it again... basically, I was lazy.
I will be taking apart the rear axle to run a underdrive gear set. Should I replace the locker at that point also or are they usually good to go?

Yes. Your axle should have the round green aluminium lockers, and should be replaced with the gray cross lockers.

[allgm1]

Originally Posted by ultimate_monkey

why not?? all thats in there is a few bearings and a carrier for the locker, its not like a tone of little peices are gonna fall out

Not always true, if theres a problem theres likley to be a ton of little peices falling out lol

[Duuuuuuuude]

Originally Posted by ram_tough

Yes. Your axle should have the round green aluminium lockers, and should be replaced with the gray cross lockers.

Not always. Both the ARTR and the RTR I bought had the grays.

[Kanine38]

Originally Posted by Duuuuuuuude

Not always. Both the ARTR and the RTR I bought had the grays.

Good to know... Thanks. Now I need to look for a dig.

[2500hdon37s]

Originally Posted by ram_tough

Yes. Your axle should have the round green aluminium lockers, and should be replaced with the gray cross lockers.

the only Axial kit to come with a locker was the orignal ax-10 KIT

[ultimate_monkey]

Originally Posted by allgm1

Not always true, if theres a problem theres likley to be a ton of little peices falling out lol

well in that case, what falls out is usually things u dont need in there any more any way