So my replacement pulleys from johnny arrived on Thursday and I installed them and the new 90mm wheels today, then took the board out for a test ride. First thing I noticed, 90mm is fantastic compared to ~60 Second, I noticed that now that I’m using a 15mm belt and pulleys instead of the paltry 9mm, I get 0 belt slippage no matter how hard I accelerate or brake. Woo!
Unfortunately I’m facing a strange issue. When I accelerate hard the board instantly throws me off forwards. It’s not just cutting the power, it’s actively braking. Except it’s not a normal brake. It doesn’t squeal like it normally would while braking (it’s a 150A X-Car esc) and it makes a different sort of noise. At first I thought it was the receiver cutting out due to power brownouts, so I put a 220uf cap on the BEC from the ESC. Tested again, still threw me off. It’s very consistent and I can replicate every time.
So I’m not sure what it could be. It doesn’t sound like the ESC is braking, but it feels like it is. Sort of. I wondered if maybe it could be motor timing, but I don’t know anything about that so I don’t know where to start.