Okami
10 W
- Joined
- Jun 2, 2016
- Messages
- 95
Hi, everyone!
Been a lurker here for a while but finally decided I might post my results and findings concerning friction drive for ebike.
Short summary:
Motor: chinese made 63mm size motor, speed: around 200kv
Controller: Helicopter / Plane 60A Yep esc
Battery: Multistar 6s 12ah (soon might go to 10ah, due to enclosure size
---
Mounting: on top of rear tyre, clamp attachment stemming from seat tube (28mm).
https://zip.failiem.lv/thumb_show.php?i=gekxh8ha&view/img]
[img]https://zip.failiem.lv/thumb_show.php?i=f7fxmz77&view
Motor pressure is constant against the tire using a large spring.
Wattage / Speed: So far peak values have been from 600 - 800 W, I assume 300-400W continous power.
I can get up to 35kph (21mph) using motor power only. With pedaling abou 43kph (27mph).
Power consumtion: Seems to be about 8 - 9 Wh/km, so quite low consumtion even with lotsbof throttle and speeding.
Tire choice / motor surface:
Smooh profile tires would have been the best though I have got knobby tires on it.
At first I thought it wouldnt work very well because of that but in the end im quite sattisfied with the results.
I tried to apply some vinyl (fabric) tape on motor but it didnt hold well and it just rolled up chunks in a few places and caused more vibration.
I was planning on gluing abrasive tape but the one I found locally was not very gritty / course enough, so I never tried it.
Though I came up with conclusion that skateboard grip tape should work nicely, I just have to come up with where to get a little piece of it.
Final conclusions:
I like that the bicycle is still light enough to be easy lifted. What I also like is that the wide tires and front suspesion gives a rather comfortable ride not sure how comfortable it would be with narrow tires.
On topic about power, I would have liked at least 500-600w of constant power.
My only approach now would be to either apply more grip to the motor or change tire profile.
There is some tire wear already but I believe this is because I have others let to ride it and they havent been always gentle with throttle and have let the motor slip..
Will update with a few more details / conclusions in future..
Been a lurker here for a while but finally decided I might post my results and findings concerning friction drive for ebike.
Short summary:
Motor: chinese made 63mm size motor, speed: around 200kv
Controller: Helicopter / Plane 60A Yep esc
Battery: Multistar 6s 12ah (soon might go to 10ah, due to enclosure size
---
Mounting: on top of rear tyre, clamp attachment stemming from seat tube (28mm).
https://zip.failiem.lv/thumb_show.php?i=gekxh8ha&view/img]
[img]https://zip.failiem.lv/thumb_show.php?i=f7fxmz77&view
Motor pressure is constant against the tire using a large spring.
Wattage / Speed: So far peak values have been from 600 - 800 W, I assume 300-400W continous power.
I can get up to 35kph (21mph) using motor power only. With pedaling abou 43kph (27mph).
Power consumtion: Seems to be about 8 - 9 Wh/km, so quite low consumtion even with lotsbof throttle and speeding.
Tire choice / motor surface:
Smooh profile tires would have been the best though I have got knobby tires on it.
At first I thought it wouldnt work very well because of that but in the end im quite sattisfied with the results.
I tried to apply some vinyl (fabric) tape on motor but it didnt hold well and it just rolled up chunks in a few places and caused more vibration.
I was planning on gluing abrasive tape but the one I found locally was not very gritty / course enough, so I never tried it.
Though I came up with conclusion that skateboard grip tape should work nicely, I just have to come up with where to get a little piece of it.
Final conclusions:
I like that the bicycle is still light enough to be easy lifted. What I also like is that the wide tires and front suspesion gives a rather comfortable ride not sure how comfortable it would be with narrow tires.
On topic about power, I would have liked at least 500-600w of constant power.
My only approach now would be to either apply more grip to the motor or change tire profile.
There is some tire wear already but I believe this is because I have others let to ride it and they havent been always gentle with throttle and have let the motor slip..
Will update with a few more details / conclusions in future..
