What gear drive and which motor kv combo are you using?
I used quite a thick paper to mesh the gears, I am wondering if I gave them too much backlash.
Yes and the freeroll is better then on the R-Spec hubs 
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Torque board 6374 190KV. mini drive 2.4:1. The backlash was adjusted with four Saran wraps. Engage the four stacked Saran wraps on the gear.
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Great build…would like to know how it would be to mount the gear drive underneath the tail (with a protection for kick up use surely:stuck_out_tongue_winking_eye:) peace
Love the build. Have you had any wheelbite issues? Using risers?
哆啦A梦
10cigars