I’m so tempted to grab a set of these drives for a build I’m working on. I have a set of Etoxx drives with a wall-climbing 6.25 ratio and I can’t find if I can get a different gear to tame it for the street (@NoWind 
) The 55/11 would probably be the best set for my riding type
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u need to strap a turbojet engine point to the ground to keep urself from wheelie every time u touch the throttle 
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Exactly
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Wonder if these drives having tightness on one side are always the same side and it depends on the direction of the axial force
I suspect not because if you look at the drives they are a mirror image of one another including the directions of the helical gears.
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I’ve done over 100 km now on my drives including a pretty hard 70 km on them today. The right-side is a lot freer now, almost identical to the left. I opened it up again tonight just to check and everything is looking fine. I’m also going to replace all my wheel bearings tomorrow as well.
My two takeaways from the experience with the 4GS so far is that you want to try, as much as possible, to get both sides with equal friction and that the tolerances for tightening both the plate to the motor, and then that assembly to the drive, are pretty small so you have to finesse it a little bit. However I think even with belts it’s not always going to be the exact same amount of resistance on both sides.
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@Ean.esk8 how long is the early bird price going to last?
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We have 5 set left for $278 a pair, early bird price will end up when it sold out !
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4 sets* 
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Interesting to see you’re using that type of clamp design. How did you account for the distortion in the clamp caused by actually actually clamping it when designing the corresponding hole pattern on the gear drive plate? FEA? Trail and error? Oversizing the geardrive holes/ using slots? On my design I avoided this kind of clamp because I was concerned about parallelism related issues so I’m
curious to hear how you solved it.
Love these drives btw, great work!
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On my setup it was really snug out of box. I had to ease it in. Fb320 v1/2
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In the assembly guide, they recommend tightening down the big clamp screw first, then the ones in the circular pattern, around it.
The holes in the circular pattern were pretty normal thru-fit, but I think there would be enough slop there on a precision truck to allow that to compensate for this issue you speak of
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My radium motor is the same,lol, the 4GS only support 30mm shaft maximum
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so what do you do in your spare time?
do you work from home?
Next batch 5 gear ratio pre-order,sign up here!
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More audio for yall to hear who are curious. Drives have been holding up well so far
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build other boards, fix the board when it breaks, obsess over every little battery issue… oh and I ride sometimes too