DarksideVR

I have a micro DT. I put a 3 racing alum gear box on today and the diff stopped working shortly after. I read here on RCU that this happened to someone else. The solution was to shim the diff. Can anyone explain how to do this for a newb? I have a new diff on the way, my LHS was out. Thanks

KRO

You need a 4 mm i.d. shim between the bearing and the diff output gear . I belive I used an axel spacer from the RC18T stub axel drivepin kit .
[link=http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXJHR8&P=Z]stub axel pin kit [/link]

DarksideVR

Thank You. I'll hit the LHS tomorrow.

Mz

when you try to drive it, does it just rev out?

Mr. Mugen

Are you shimming the bearing with that? Or the diff itself?

DarksideVR

The wheels will only turn when the air. The pinion gear on the motor and slipper gear are turning but the axles are not (under load). When I installed the gearbox, my diff came out in two pieces. Is this normal? Or was it damaged before?From KROs post it sounds like the little gear just above the diff gear? Or in the diff itself? not sure.

Mr. Mugen

Are you sure your slipper is tight enough?

KRO

No ! The shim goes on the diff itself , between the bearing and the diff output gear .

papa_smurf

I have the same 3 racing gearbox and shimmed it. Then it was to tight and would not spin so I took it out then the gear stripped.

I used the assoiated stub pin axel kit to shim it, and I put it in between the bearing and the gear like you said.

Im confused.
[:@][:@][:@]

tyhodge07

down at the very bottom
http://micromodz.all-up.com/KeyInfo-h6.htm

papa_smurf

Thats what I did and it was to tight.

KRO

papa , youre only using ONE shim right ? Mine was a little tight too when I first put it together , but in a few runs it was smooth as silk .

I havent had to rebuild for a long time now and I went to a brushless system a few weeks ago and still no problems .....