With 9 inch tires, how much consumption will be lost? Considering I’m on a 12s2p, I expect it to have some decent impact. 
Should just get that battery @SirVesa 
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Not sure which battery you’re talking about but you’re on the lighter side. A 12s 4p would probably do for you what a 6p would do for me.
Also, my vote is still chain drive but if you want gears I have some BNM1 ATs that I’ll never use because they’re helical and have left me stranded twice already. You’re lower weight would probably make this less of an issue. Name your price if you want them, but seriously just hit up @Facko and get a chain drive.
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Boardnamic drive isn’t bad once you’re able to get straight cuts for it, but agree that helical kinda suck for it. Stooge gears had been running great for me with basically no maintenance.
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Are stooge gears loud?
Ermmmmmm… yes… like very loud… Most people can’t rl handle the noise more than 10-15 miles ride.
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That’s what I’ve heard 
Yeah they’re meant to be loud cause they’re mostly used for racing so racers can hear them.
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This one is a really good deal if you are still using a hV VESC. Keep in mind 20S6P 3Ah LiIon is 6x3x20x3.6=1296Wh (which is if you discharge deep to get the full 3Ah and have no voltage sag)
I am one of these in 3mm alu or steel away from having 2 pulleys for Dnollie. Somehow Fractory a big lasercutting service messed up one part, it is fundamentally different from the others.
Pulley-Hub Adapter.dxf (419.6 KB)
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Unfortunately, I am using a tenka right now 
Maybe worth trying to send the d100 back to makerx to see if it’s repairable.
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Might some people have a D100(S) that’s working on just one side they could spare? I’m not sure how frequently they still work on one side and how often those ones are used afterwards but a lot of those get blown up from racing especially.
Alternatively the Spintend 100V100A dual for $175 is probably going to be the best amount of reliable and cheap. Or keep going on 12S, the main reason for hV now would be for the cheap battery, if your motors are 140Kv hV will help performance a lot but not so much 190Kv
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i don’t think that was a design goal. 
more of a side effect.
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Well I like that side effect. 
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Just hit 34 mph!!!
It was frickin scary. Every time I get above 30 I get freaked out that something could go wrong, whether it’s the belt slipping, or my concerning soldering letting me down…
Still worth it of course 
It was so fun.
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be sure you got good PPE
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I would probably still hit it with a torch and beat a slightly oversized torx head into it. Should come right out.
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So I recently made the jump from belt drive with 8” tires on Rockstar IIs over to BN gear drives, thinking it’d be a solid upgrade and more reliable. I also acquired a set of fivestar hubs and 9 inch tires.
Seemed like a fun change. But now, a couple weeks into trying to get this all working, it feels like I’ve encountered every problem I could have.
The problem I’m running into now is axle space. The Matrix II trucks just don’t seem to have enough usable axle length to let me fully thread a nut onto the axle with the FiveStars mounted. Even without a spacer, I can’t get the nut on securely. The FiveStars eat up just a bit too much of that axle, and now I’m just trying to figure out how to get this up and running without out spending too much more.
On top of that, probably the main problem, I can’t get the truck adapter fully seated on the hanger either. It gets stuck before it can sit flush all the way on, I’ve sanded and filed down the trucks and I’ve got it on what seems to be the furthest but even testing the fit with rockstars 2s on the axle, there is barely any axle room, and the 2 hubs are pretty different widths so there must be more room for it to go on. And I’m planning on cutting off a couple mm of the screws that have the nubs they lock the hub to the gear drive off so the nubs sit flush with the nuts on the hubs, it just won’t give me that much extra space.
Anyone else dealt with this? I’ve considered some sketchy ideas like grinding down the bearing or wheel sleeve slightly… but obviously I want something more solid and safe.
If you’ve managed to get this combo (Matrix II + BN m1 AT gear drives + FiveStars + 9” tires) working, it would be great to hear how you did it, or even someone else that can come at it from a more logical perspective than me
Videos and pics of problem-
Oh I don’t remember you saying you have that.
Your sure it will work? I thought that matrix 2s don’t have threaded axles, that they are part of the hanger…?
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Oh I thought I told you.
You’re right stock aren’t threaded axles they are splines cold pressed in and mine are just a really tight fit, a notch that lines up with a grub screw, and another grub screw for good measure. Pretty sure they’re M8, might possibly be M6.
I’m not 100% sure these will solve your problems as both the shoulder and the usable axle is longer so it might be too far. You may have to drill out the hole for the axle in the hanger clamp to be a little bit larger as the shoulder on these is 16mm. I can get dims later or send you an stl file to 3dp and test fit tomorrow.
edit: actually here it is now. Axle to hanger alignment might be slightly off but I scaled down the thicknesses slightly so it all fits easier. Just the end of hanger axle there
Longer M2 hanger.stl (185.2 KB)
@Dnollie
oh and optionally comes with nuts that only need 6mm of thread engagement.
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