- Feedback
- View
GENESIS CARIBOU + ON ONE FATTY + ELECTRIC MOTORS = 2x :-)
- Thread starter tiboltrider
- Start date
- Feedback
- View
Re:
The mkII is now finished! It's an On One Fatty 26" X 4" wheel.
It has a less powerful motor, the battery is in the frame bag. It's loads lighter (but slower) than the Genesis due to the smaller motor and battery, and the frame being alloy, fork carbon. I couldn't decide how to mount the battery on this one. The frame is really small and the other battery only just fitted in the Genesis. I thought about rack mounted batteries and Seatpost mounted ones. In the end I opted to take a standard battery out of it's plastic case and sort the loom. It all fits nicely (with the controller) into the frame bag and at a quick glance doesn't look like motorised steed. I've only tested it up and down the road so far but it all seems to be working well.
The mkII is now finished! It's an On One Fatty 26" X 4" wheel.
It has a less powerful motor, the battery is in the frame bag. It's loads lighter (but slower) than the Genesis due to the smaller motor and battery, and the frame being alloy, fork carbon. I couldn't decide how to mount the battery on this one. The frame is really small and the other battery only just fitted in the Genesis. I thought about rack mounted batteries and Seatpost mounted ones. In the end I opted to take a standard battery out of it's plastic case and sort the loom. It all fits nicely (with the controller) into the frame bag and at a quick glance doesn't look like motorised steed. I've only tested it up and down the road so far but it all seems to be working well.Attachments
Re: Re:
Nice work. A couple of points from when I built my electric Felt hardtail that you may find helpful.
For the brake cut out, I used a very neat inline pressure switch tapped into the hydraulic brake lines and allows you to use proper disc brakes. I have a spare one kicking around here someplace.
For gear changing, I mounted a SRAM twistgrip shifter on the left bar.
tiboltrider":17jde1he said:
Nice work. A couple of points from when I built my electric Felt hardtail that you may find helpful.
For the brake cut out, I used a very neat inline pressure switch tapped into the hydraulic brake lines and allows you to use proper disc brakes. I have a spare one kicking around here someplace.
For gear changing, I mounted a SRAM twistgrip shifter on the left bar.
- Feedback
- View
Re: Re:
Hi. Thanks for the feedback and cool build thread. Do you still have your bike? Any problems with long term use?
That brake cut out switch sounds cool - I think I may try that if I ever build a faster one. The cable pull brakes actually aren't as bad as I thought they were going to be though. I may just fit a bigger rotor on the front of the orange bike sometime - it was getting a tad warm on the last ride.
The r/h gripshift mounted l/h also sounds good. It sounds like a really good way of getting over the lack of space problem on the right side. I've just removed a rapid rise rear mech though which was annoying enough on one of the other bikes. The r/h thumbie, on the white bike, only just catches the twist grip throttle and works ok.
GSB":2dlts9lr said:
Hi. Thanks for the feedback and cool build thread. Do you still have your bike? Any problems with long term use?
That brake cut out switch sounds cool - I think I may try that if I ever build a faster one. The cable pull brakes actually aren't as bad as I thought they were going to be though. I may just fit a bigger rotor on the front of the orange bike sometime - it was getting a tad warm on the last ride.
The r/h gripshift mounted l/h also sounds good. It sounds like a really good way of getting over the lack of space problem on the right side. I've just removed a rapid rise rear mech though which was annoying enough on one of the other bikes. The r/h thumbie, on the white bike, only just catches the twist grip throttle and works ok.
Re:
Yes, I've still got it, although I dont use it that often. The centre drive works well and means there's a huge choice of gearing and speed capability, and it's very efficiient, but it also means it's hard on transmission parts, particularly chains. I snapped one last summer climbing the steps up to a set of lock gates by Abbey Mills. The only other issues are the motor controller overheating at full power (solved by putting it out in the airflow) and the freewheel in the centre of the cranks disintigrating which was solved by using an ACS Crossfire freewheel instead of the cheap Chinese crap the cranks came with.
Currently though, I'm waiting on a new 70volt charger. I periodically put the battery on charge when I'm not using it, but last time the charger got a bit damp, and blew up.
Yes, I've still got it, although I dont use it that often. The centre drive works well and means there's a huge choice of gearing and speed capability, and it's very efficiient, but it also means it's hard on transmission parts, particularly chains. I snapped one last summer climbing the steps up to a set of lock gates by Abbey Mills. The only other issues are the motor controller overheating at full power (solved by putting it out in the airflow) and the freewheel in the centre of the cranks disintigrating which was solved by using an ACS Crossfire freewheel instead of the cheap Chinese crap the cranks came with.
Currently though, I'm waiting on a new 70volt charger. I periodically put the battery on charge when I'm not using it, but last time the charger got a bit damp, and blew up.
- Feedback
- View
Re:
Thanks for that linky. I did have a go on a mid-drive pro bike company built bike and it was nice and smooth. But I soon got bored with it when it cut out at the 15 mph limit. It'll be cool to see how technology advances over the next few years and the prices should drop loads! Hopefully one day a Stealth Bomber Bike will be within my reach!
Thanks for that linky. I did have a go on a mid-drive pro bike company built bike and it was nice and smooth. But I soon got bored with it when it cut out at the 15 mph limit. It'll be cool to see how technology advances over the next few years and the prices should drop loads! Hopefully one day a Stealth Bomber Bike will be within my reach!
Re: Re:
They certainly are. Restricted to 15MPH and 250Watts, but it's not easy to implement. I achieved this on my home built bike by using speed and current/voltage sensors feeding into a supervising control computer. The computer intercepts the twist throttle demand signal and backs off the throttle so the limits aren't exceeded. You can of course turn these up for more power/less range, or even turn them off entirely for off road use, when the full 1200watts (about 1.6hp) can be used.
02gf74":2q48apqs said:
They certainly are. Restricted to 15MPH and 250Watts, but it's not easy to implement. I achieved this on my home built bike by using speed and current/voltage sensors feeding into a supervising control computer. The computer intercepts the twist throttle demand signal and backs off the throttle so the limits aren't exceeded. You can of course turn these up for more power/less range, or even turn them off entirely for off road use, when the full 1200watts (about 1.6hp) can be used.
- Feedback
- View
Re:
Quick update. I've been out playing in the snow tonight >>>
The pictures show Oldway Mansion (rear view) original home to the Singer sewing machine family, and Paignton Pier.
Main changes are slightly narrower tyres - Surly 3.8" instead of On One 4.0" - for slightly more seatstay clearance, and bigger floating rotors - I had to change the front caliper 'cos I couldn't get the right mount to make the old Deore caliper to fit. The motor and battery are still working as they should.
Quick update. I've been out playing in the snow tonight >>>
The pictures show Oldway Mansion (rear view) original home to the Singer sewing machine family, and Paignton Pier.
Main changes are slightly narrower tyres - Surly 3.8" instead of On One 4.0" - for slightly more seatstay clearance, and bigger floating rotors - I had to change the front caliper 'cos I couldn't get the right mount to make the old Deore caliper to fit. The motor and battery are still working as they should.
