Grin released their REAR All-Axle Hub Motor
Grin released their REAR All-Axle Hub Motor
Feature highlights:
- Thru-axle and QR compatible
- Built-in torque arm
- 11-speed cassettes
- Integrated cadence PAS sensor
- Made in Canada
Sadly it didn't get a torque PAS sensor.
If you're in the market for an electric conversion kit and you like the idea of direct-drive hubs, it probably doesn't get better than this.
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I always like what these guys are offering, but somehow the prices always seem to go through the roof, this motor even more so. When I spec one out all of a sudden they need four figures from me, though usually I've ended up speccing something top notch. I'd love one of these with a torque sensing controller but I can't see it happening.
Indeed their in-house options aren't cheap but then again, the difference in quality is significant. This direct-drive hub motor for example weighs full 2kg less than the equivalent imports. That's all down to engineering, materials used and accuracy of manufacturing. The other options like are significantly cheaper. I'm running a geared Bafang myself due to its lower weight (2.6kg vs 4.2kg). The lower weight is due to the type of motor - geared vs direct-drive. The lapses in quality are obvious. For example water resistance is not great at all. If Grin make an equivalent small and light geared hub, I'd probably buy it as it'll most likely address Bafang's deficiencies and it might be lighter too.