XRAY - Model racing cars

Here you go....

I measured the tape thickness with my digital calipers it was exactly .002".

Tools needed



Bearing taped but needs to be trimmed.



Trimmed & ready for installation. Now the bearing will not spin in a heavily used dif case. Very snug..

I used shims out of a kyosho shim kit. there were four of the size I need and I only need to use to of them which were the same size as the inner house of the pinion bearings just a little bit wider in diameter. A friend used the shim kit for the associated buggy that had the same shims.

ignore the 5.15mm width,its 5.30mm

heres what i did to stop the gearbox casing getting sloppy and to keep the pinion gear from any sideways movement.

the steel ring is a snug press fit into the casing,because it locks the 2 bearings togther when the 3 screws are tightened right down there no side float on the front bearing near the pinion end.

the pinion still has a few thou end float so its not stressing the bearings with radial load.

see the bit of play between the front bearing and the case means that when the pinion tries to transfer torque thru to the crown gear,the pinion is forced away from the crown gear,because there is play in the casing. the bearing is pushed to one side to take up the gearbox casing play,this puts the gear on a slant and puts the bearings under uneven load as they are now running untrue.

Where did u get those rings ?

i made them on my lathe.

Thats pretty cool. How could I get some of those from you.

Are you selling them ? I'm interested in buying those's too!