I have two Tamiya kits I've built and wanted to slow them down by swapping the stock "torque tuned" 540 motor for a 55-turn RC4WD motor.
My Mercedes Cabrio MF-01X rig took the motor swap with no problem. Slowed it down to a speed that is much more fun for mild trail runs... done!
I did the same thing in my CC-01 FJ Cruiser, taking care to make sure the pinion gear is the exact same position, clearance etc. as the stock motor. But it ran with a grinding noise and when I went from forward to reverse, I could sense the gears were skipping somewhere. So I put it back on the workbench and checked everything, but still got the same result. I have checked and re-checked everything many times over, but get nowhere.
I added the little cardboard motor insulator that came with the kit, still same thing.
I went to a different motor, this time a 35T, still same result.
Through all of this, if I went back to the original "torque tuned" motor, everything was silky smooth again.
Any idea what I'm doing wrong? I figured changing the motor in the CC-01 should be simple like it was in the MF-01X, but somehow I can't get it to accept anything but the motor that came with the kit.
Thanks all!
My Mercedes Cabrio MF-01X rig took the motor swap with no problem. Slowed it down to a speed that is much more fun for mild trail runs... done!
I did the same thing in my CC-01 FJ Cruiser, taking care to make sure the pinion gear is the exact same position, clearance etc. as the stock motor. But it ran with a grinding noise and when I went from forward to reverse, I could sense the gears were skipping somewhere. So I put it back on the workbench and checked everything, but still got the same result. I have checked and re-checked everything many times over, but get nowhere.
I added the little cardboard motor insulator that came with the kit, still same thing.
I went to a different motor, this time a 35T, still same result.
Through all of this, if I went back to the original "torque tuned" motor, everything was silky smooth again.
Any idea what I'm doing wrong? I figured changing the motor in the CC-01 should be simple like it was in the MF-01X, but somehow I can't get it to accept anything but the motor that came with the kit.
Thanks all!
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