MoutainTime
1 mW
Hi,
I wanted to share my first electric bike build and my second post on this forum. I appreciate all the information on the ES. I have learned a lot, and wouldn't even think of dabbling in this without the great information. I am an avid endurance mountain biker. I am building up a fat bike for almost exclusive offroad, mountain use. The bike will also be used on snowy off road trails through the winter. This terrain is singletrack, steep, and rocky. We are hoping to have a bike that can make 30 to 40 mile trips into the back country. I am actually building this for a good friend. He loves the epic mountain adventures but doesn't like to pedal quite as much as I do. He also doesn't care for the technical part of building up bikes and things. I get the fun of building the bike and borrowing it sometimes and he funds the project. Win, win.
Here is the build I am attempting:
The Bike: 2015 Motobecane Sturgis Bullet with Rockshox Bluto fork, Tubeless 4" wide tires, and a 10 speed rear cassette. 11t to 36t. The bike was purchased specifically for this electric build.
The Electric Bits: Bafang BBSHD, 100mm bottom bracket. Triangular 52V 20mah pack with Samsung Cells. The plan is to use a triangle frame bag for now in a manner that is very secure and protective. I am planning on using a left hand thumb throttle and a hydraulic brake sensor with the controls. The kit came with a 961. Is that display sufficient?
I have started the build and have the mid drive mounted on the frame. If I could do it over, I would order a 110 mm or even a 120 mm BBSHD for the 100mm frame. I think this will almost universally be the case on fat bikes for anyone thinking of building one. The drive on the BBSHD is big and I just can't see it clearing the chainstays on most fat bike frames. It is very close to clearing on this bike. I would say maybe 5mm more would clear. I have a few photos that kind of show the clearance issue.
I used one of the delrin bottom bracket spacers and I also had to cut back the direct mount derailleur on the bike to clear the drive. I did this with a dremel.
The left hand crank arm doesn't even come close to clearing the chainstay so I have an offset crank arm coming soon.
Feedback and comments welcome! Photos to follow below:
I wanted to share my first electric bike build and my second post on this forum. I appreciate all the information on the ES. I have learned a lot, and wouldn't even think of dabbling in this without the great information. I am an avid endurance mountain biker. I am building up a fat bike for almost exclusive offroad, mountain use. The bike will also be used on snowy off road trails through the winter. This terrain is singletrack, steep, and rocky. We are hoping to have a bike that can make 30 to 40 mile trips into the back country. I am actually building this for a good friend. He loves the epic mountain adventures but doesn't like to pedal quite as much as I do. He also doesn't care for the technical part of building up bikes and things. I get the fun of building the bike and borrowing it sometimes and he funds the project. Win, win.
Here is the build I am attempting:
The Bike: 2015 Motobecane Sturgis Bullet with Rockshox Bluto fork, Tubeless 4" wide tires, and a 10 speed rear cassette. 11t to 36t. The bike was purchased specifically for this electric build.
The Electric Bits: Bafang BBSHD, 100mm bottom bracket. Triangular 52V 20mah pack with Samsung Cells. The plan is to use a triangle frame bag for now in a manner that is very secure and protective. I am planning on using a left hand thumb throttle and a hydraulic brake sensor with the controls. The kit came with a 961. Is that display sufficient?
I have started the build and have the mid drive mounted on the frame. If I could do it over, I would order a 110 mm or even a 120 mm BBSHD for the 100mm frame. I think this will almost universally be the case on fat bikes for anyone thinking of building one. The drive on the BBSHD is big and I just can't see it clearing the chainstays on most fat bike frames. It is very close to clearing on this bike. I would say maybe 5mm more would clear. I have a few photos that kind of show the clearance issue.
I used one of the delrin bottom bracket spacers and I also had to cut back the direct mount derailleur on the bike to clear the drive. I did this with a dremel.
The left hand crank arm doesn't even come close to clearing the chainstay so I have an offset crank arm coming soon.
Feedback and comments welcome! Photos to follow below: