Alan B
100 GW
Good chainline. Those gears are way too clean.
You have hit the nail on the head for the BBS02. Great little drive but gets pretty hot. I'm going to use one on my folder, but I think a serious bike calls for the HD, personally.
I've been unable to heat the BBSHD much on low gear singletrack climbs so steep the front wheel is barely staying on the ground, but going 25-30 upgrade on pavement will warm it up more, not really hot though. I do keep the motor spinning fast when using much power, but the downside there is my pedaling cadence doesn't reach motor speed, but that's where the motor runs coolest. But for an increase in system weight of only 3 pounds the HD seems a good all-round choice unless really paring the ounces. There's always the Astro powered Tangent for that use-case.
The Cromotor rockets up the hills without getting all that warm. The problem with the regular hubmotors is they don't develop enough torque for steep stuff. The Cromotor is about double the torque capacity of the usual hubmotor, and it just doesn't have the heating problem at the same torque levels.
You have hit the nail on the head for the BBS02. Great little drive but gets pretty hot. I'm going to use one on my folder, but I think a serious bike calls for the HD, personally.
I've been unable to heat the BBSHD much on low gear singletrack climbs so steep the front wheel is barely staying on the ground, but going 25-30 upgrade on pavement will warm it up more, not really hot though. I do keep the motor spinning fast when using much power, but the downside there is my pedaling cadence doesn't reach motor speed, but that's where the motor runs coolest. But for an increase in system weight of only 3 pounds the HD seems a good all-round choice unless really paring the ounces. There's always the Astro powered Tangent for that use-case.
The Cromotor rockets up the hills without getting all that warm. The problem with the regular hubmotors is they don't develop enough torque for steep stuff. The Cromotor is about double the torque capacity of the usual hubmotor, and it just doesn't have the heating problem at the same torque levels.