Storapa
100 W
Hi Folks, I thought I should post up my project as so many others have taken the time to post up theirs.
About the bike. It’s a commuter for me to ride daily. I live 10.5 miles from work but need to be at my desk at 7.00am and reasonably smart. The spec of the bike is as follows.
Motor - Crystaline HS3540.
Controller –12 FET IRFB4110 Infineon (40A current limit)
CA V3
20Ahr 20s EIG pack (two 10s packs run in series)
A standard bottom bracket width of 68mm
I wanted something similar to a Stealth Fighter but with geometry that I like. Head tube – 69 deg, seat tube 73.5 deg.
Whilst I was designing the bike I fitted the motor, controller, battery pack etc to a surrogate frame so that I could iron out any powertrain issues early on. This was time well spent. There were a few issues that needed a fair bit of attention that I didn't expect. I’m a mechanical engineer, so I've had (and still have) a lot to learn about electrical engineering. The surrogate bike was a bit lively and not that pleasant to ride as it was fully rigid, but it went well.
The wheels I'm using are 24” jump bike rims with a Shimano front hub. Graham (Tiller Cycles) cut the spokes for me. I re-spoked the rear wheel as I wasn't happy with the spoke to rim angle. I re-drilled the hub and used a paired spoke pattern. The front wheel also needed re-spoking as I decided to use a 15mm through hub with the new front forks.
The frame build is still in progress. I've been building the new frame for nearly 2 months now. The rear swing arm needs a fair bit of work at the moment. I’ll put some info about the frame build if people are interested. It’s laser cut sections that I have TIG and MIG welded.
Now some thanks.
Graham at Tiller Cycles (UK) for cutting spokes (several times) and listening to me waffle.
Paul and team at EM3EV for helping me out with my controller and various other bits and bobs. Paul and Moon are always very helpful and efficient.
Justin and his team at Grin Technology for putting some great products out there and his approach to this field as a whole. I wish more businesses could be run like Grin.
Central Laser Services (UK) for laser cutting my parts.
You lot - Endless Sphere folk, for posting so much inspirational and useful information.
Right, that’s it for now.
About the bike. It’s a commuter for me to ride daily. I live 10.5 miles from work but need to be at my desk at 7.00am and reasonably smart. The spec of the bike is as follows.
Motor - Crystaline HS3540.
Controller –12 FET IRFB4110 Infineon (40A current limit)
CA V3
20Ahr 20s EIG pack (two 10s packs run in series)
A standard bottom bracket width of 68mm
I wanted something similar to a Stealth Fighter but with geometry that I like. Head tube – 69 deg, seat tube 73.5 deg.
Whilst I was designing the bike I fitted the motor, controller, battery pack etc to a surrogate frame so that I could iron out any powertrain issues early on. This was time well spent. There were a few issues that needed a fair bit of attention that I didn't expect. I’m a mechanical engineer, so I've had (and still have) a lot to learn about electrical engineering. The surrogate bike was a bit lively and not that pleasant to ride as it was fully rigid, but it went well.
The wheels I'm using are 24” jump bike rims with a Shimano front hub. Graham (Tiller Cycles) cut the spokes for me. I re-spoked the rear wheel as I wasn't happy with the spoke to rim angle. I re-drilled the hub and used a paired spoke pattern. The front wheel also needed re-spoking as I decided to use a 15mm through hub with the new front forks.
The frame build is still in progress. I've been building the new frame for nearly 2 months now. The rear swing arm needs a fair bit of work at the moment. I’ll put some info about the frame build if people are interested. It’s laser cut sections that I have TIG and MIG welded.
Now some thanks.
Graham at Tiller Cycles (UK) for cutting spokes (several times) and listening to me waffle.
Paul and team at EM3EV for helping me out with my controller and various other bits and bobs. Paul and Moon are always very helpful and efficient.
Justin and his team at Grin Technology for putting some great products out there and his approach to this field as a whole. I wish more businesses could be run like Grin.
Central Laser Services (UK) for laser cutting my parts.
You lot - Endless Sphere folk, for posting so much inspirational and useful information.
Right, that’s it for now.