mi7d1
100 W
I'm a little late to the thread but wanted to say that I use a C'lyte 408 with a 36v 20Ah LiFePO4 Headway battery pack driving my bottom bracket. Speed wise it'll do just under 30mph at under 14Wh/mile with a 44 mile range running wide open. A friend of mine who has a Stokemonkey gets better than 7Wh/mile. We haven't figured out why I use twice the watt-hours when we ride at the same speed. It might be the terrain. He's in flat land Florida and I'm in hilly Portland, Oregon. It might also be the differences in a Stokemonkey motor and controller and my stock C'lyte motor and controller. The Stokemonkey is made here in Portland at Clever Cycles http://clevercycles.com/products/stokemonkey/
Prior to installing the bottom bracket drive I was running a C'lyte 406 in a 26" rear wheel with a 48v SLA 18Ah battery pack. It would do ~31mph at 18Wh/mile. Range was a little over 26 miles.
Using the bottom bracket drive and 36v 20Ah Headway pack saved me 28lbs in weight and allows me to climb any hill in my area. Whereas with the hub motor mounted in the wheel I avoided hills like the plague. I used the 408 motor for a while mounted in the 26" wheel but sacrificed torque for more top end speed. The motor was geared to spin the cranks at my preferred cadence while running in it's optimum efficiency rpm. One of the things I like about this system (most of the time) is that while using the motor I have to pedal just ahead of the motor. There is no free ride. If I don't then the motor will pull my feet around in circles and that's not fun.
Here are a few photos. The first one show the custom motor mount with torque plates. The second and third show the motor installed with a view from both sides
Prior to installing the bottom bracket drive I was running a C'lyte 406 in a 26" rear wheel with a 48v SLA 18Ah battery pack. It would do ~31mph at 18Wh/mile. Range was a little over 26 miles.
Using the bottom bracket drive and 36v 20Ah Headway pack saved me 28lbs in weight and allows me to climb any hill in my area. Whereas with the hub motor mounted in the wheel I avoided hills like the plague. I used the 408 motor for a while mounted in the 26" wheel but sacrificed torque for more top end speed. The motor was geared to spin the cranks at my preferred cadence while running in it's optimum efficiency rpm. One of the things I like about this system (most of the time) is that while using the motor I have to pedal just ahead of the motor. There is no free ride. If I don't then the motor will pull my feet around in circles and that's not fun.
Here are a few photos. The first one show the custom motor mount with torque plates. The second and third show the motor installed with a view from both sides


