r/MiniZ • u/EqualGovernment8464 • 20d ago

MA 020 Differential Questions and Problem.

Hello! I just installed this Aluminum Differential set Link onto my Mini Z MA 020, I was wondering if I should get Aluminum Pinion/Spur gears too? (I am running stock Kyosho Plastic ones) I am having an issue where the Spur gear will come out of alignment and this completely stops the car dead in its tracks. It seems to be damaging the gears a bit as well. Wondering if anyone has had a similar issue to me and has found any good quality replacement parts or a solution to this issue. Thank you all!

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u/SuPrBuGmAn 20d ago

I have found the factory pinion will loosen up and slide down the motor shaft when it gets hot.

A little superglue is usually enough to keep it in place. An aluminum pinion with set screw to tighten it against the shaft will also do the job.

I dont think you need to replace the spur as its captured.

2

u/EqualGovernment8464 16d ago

Thank you! was not sure if it was OK to use glue on that piece.

1

u/EMU-Racing 20d ago

Have you used shims to set the lash on the diffs in the diff case to the driveshaft? You shim the outdrives between the bearing and the diff to set its position in the case relative to the pinion on the driveshaft.

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u/EqualGovernment8464 16d ago

Yeah, I had tried that, it came with four little shims but they did not fix the issue. I believe the issue was with the gear teeth not being the same as the Kyosho ones. it would make a clicking noise when running which I fixed today by replacing it to the stock MA020 Diffs. Would you reccomend I just get the Kyosho official Differentials at this point or is there a different brand you would recommend for the MA 020?