As it comes to the performance of the bike I have several wishes:
- Instant start rear hub motor. (I'm going to remove the peddles and the chain so no freewheel needed)
- Fast accelleration is more important than topspeed.
-Top speed Â± 30 MPH (or about 50 Kmh)
- 2 disc brakes and front-fork suspension
- Twist Throttle
- Lithium-ion battery pack
- No e-brake system
I have been looking around for the proper setup, and I find it very difficult to choose the proper setup. Until now I have the following setup:
- BMC V3 Rear Hub Motor (1000W) or BMC V2 High Torque Rear Hub Motor (600W)
- BMC full-twist Throttle
- LiFePO4 48V 10Ah Battery
- BMC 48V 50A Controller
- Cycle Analyst Stand-Alone
Can anyone tell me if this setup will work properly according the required needs? Any help or suggestions would be more than welcome!
E-GE wrote:Hi Ken, With double disc brakes I mean one in the front and one in the rear. A superman dive over the steer was not exactly my idea
itselectric wrote:E-GE wrote:Hi Ken, With double disc brakes I mean one in the front and one in the rear. A superman dive over the steer was not exactly my idea
Ok. I see. The reason I am focusing around your front brake, if I am correct, your frame do not have rear disc brake mount, nor v-brake mount. We actually did a similar configuration with Nirve Classic-3. It has a coaster brake, no front brake.
- We installed Sturmey Archer XFD front hub drum brake
- We used a regen sensorless controller which also provide some regen brake to rear wheel
- the dropout width is not a standard 135 or 100mm, we use custom 115mm axle, with single speed freewheel
The BMC 1000W is a powerful motor with 48v pack, you need to have some good brake to stop. If you don't have mounting for the disc brake, you will need other type of alternative, or weld the disc mount onto the frame.
Here is the picture of the bike.
gestalt wrote:That's a rockstar status cruiser frame to build an e-bike with, if you haven't already done so you should check out this thread http://endless-sphere.com/forums/viewtopic.php?f=12&t=8099&hilit and get a load of all those early motorcycles. I cant wait to see this bike start to take shape.
E-GE wrote:Hi Ken,
Nice bike you have there. Is there a forum topic of the build of you bike?
I'm going to replace the front-fork with a MTB suspension fork including disc brake. In the rear there is no disc brake mount yet. I'm going to use an adapter for the rear to make it disc brake compatible. I think that should do.
Whiplash wrote:For the wheel not being centered, You can try loosening the spokes on the side the wheel is to far over on and then tightening the other side to pull it over. Go really slow and try to count the turns you make and match them on the other side to keep it somewhat straight, then you can finish it up by checking the straightness of the wheel by spinning it and adjusting where needed to get it perfect, its not too hard just time consuming...Nice looking bike!
docnjoj wrote:Torque arm(s)?
torker wrote:I would try to run a washer on the inside. 9c motors have a really small flat on the axle. I would worry that it will try to pull through the dropout.