Hugh-Jassman
1 kW
- Joined
- Jun 20, 2015
- Messages
- 407
I am almost finished building my Mt.Goat Cycletruck / with Cyclone mid-drive. I am thinking about using a different motor on another bike that would also carry cargo. So I need some ideas. Can every one just tell me the pros and cons of using a 5 to 1 [or lower if possible] geared hub motor compared to something like the Bafang BSHD 1000w geared mid-drive?
With only one gear ratio. The hub motor would be more simple, but the mid-drive could be a more efficient hill climber?? but it seems to me as if the mid-drive could have much lower gear.
And can the BSHD have two chainring gears? This is what I want to do with my Cyclone, and only one gear in the rear, simply because I cannot hear or feel the gear my rear sprockets are in, then I some times get a jolt when I start the motor again. So I have taken to changing the rear gears while I am pedaling with the motor off. Not easy in high gear.
There may not be much argument for using any hub motor, like how is it possible to compare a mid drive with a gear as low as 20:1 or 17.7:1? [6:1 x 3.34:1=20.04 to 1 ratio]…. This is a lower gear than I had thought it would be. Maybe it would be better to compare it to using two geared hub motors?
How would they compare if they could?
1. In steep hill climbing with a large total combined weight?
2. Battery size needed?
3. Wasted energy as heat?
With only one gear ratio. The hub motor would be more simple, but the mid-drive could be a more efficient hill climber?? but it seems to me as if the mid-drive could have much lower gear.
And can the BSHD have two chainring gears? This is what I want to do with my Cyclone, and only one gear in the rear, simply because I cannot hear or feel the gear my rear sprockets are in, then I some times get a jolt when I start the motor again. So I have taken to changing the rear gears while I am pedaling with the motor off. Not easy in high gear.
There may not be much argument for using any hub motor, like how is it possible to compare a mid drive with a gear as low as 20:1 or 17.7:1? [6:1 x 3.34:1=20.04 to 1 ratio]…. This is a lower gear than I had thought it would be. Maybe it would be better to compare it to using two geared hub motors?
How would they compare if they could?
1. In steep hill climbing with a large total combined weight?
2. Battery size needed?
3. Wasted energy as heat?