Hoping i could get some help diagnosing a problem with my 3000w cyclone motor after a small crash. I've had this thing as reliable as can be for a a lot longer than I expected for now. Once I got all the chain and crank alignment issues sorted, I've been running full 72v 40a power with no problem. 48t front chainring to a 28t rear so big gears only, at 72v makes this thing literally a wheelie machine, even at speed. Motor gets warm at best after trying to be as hard as possible on the motor, pulling non stop wheelies from dead stops, even with long full throttle runs and field weakening on max, I could never get the motor to get even warm enough for concern.
Until now.
While replacing my rear wheel axle from a snapped qr to a solid 3/8 axle, I must have gotten a tiny bit of grease on my brake rotor. I noticed this when I took the bike back out and immediately went to wheelie and tried to feather my rear brake to drop back, instead the bike slowly fell backwards and looped out. Absolutely no external physical damage to the motor or drive train at all, mount or chain line, nothing bent at all and everything looks fine and lines up just like before, atleast externally. I was able to get back on and ride just fine and nothing externally changed.
Now, the motor itself seems to be slightly inefficient and feels like it wont spin as fast as easily, top speed definitely feels a little off, it seems to sag the battery more on hard pulls and field weakening definitely seems to be taking more effort from the battery. Yet nothing sounds different at all, theres no crunching noise like a plastic gear broke, no grinding or rubbing sounds like something broke inside, nothing sounds different at all. But something is definitely wrong now as the motor definitely gets almost hot on full power. It gets warmer than it did before on full power even if I dial the power back. And for the simple fact I feel like I lost all ability to do long controlled wheelies as that instant snap from rpm-based torque seems to be almost gone :x
Ideas?