Discussion moved here:
endless-sphere.com
---
I know that an aluminium track frame is not the most suitable frame to turn into an ebike. I do have some other bikes, which are also all track frames![Face with tears of joy :joy: š](https://cdn.jsdelivr.net/joypixels/assets/7.0/png/unicode/64/1f602.png)
![londonfixie_1692550856_3173669069055331334_46616144898.jpg londonfixie_1692550856_3173669069055331334_46616144898.jpg](https://endless-sphere.com/sphere/data/attachments/208/208126-a4fb2f0df88ddc25da5e9e0cce67a45e.jpg)
I have youtube channel https://www.youtube.com/@jetthepanda where I film my people riding around the city. Some of these people are abnormally fast freaks of nature, some are even pro's and even though I am actively training to get myself faster, I doubt I will ever be able to keep up with them when they are really pushing. So I've started looking into the idea of turning one of my bikes into an ebike. I am happy to do most of the work pedalling myself. I just need a little extra boost to help me sustain the higher speeds, which I think electricity would be perfect for. The speeds I'm having problems getting up to quickly and staying at are around 30mph and up, I can get there but not as quickly as the guys I'm following and I can't maintain it long enough to stay on the guys I'm filming.
I want to keep the bike looking as stealthy non ebike as possible. I was originally thinking rear hub with a bottle battery. I found these hubs with controller and torque sensor built into the hub, all you need to do is plug a water bottle battery in.
www.100g.tech
I contacted both of them and they do not provide their hubs for 120mm drop out spacing. I wouldn't be adverse to grinding the axle down myself. I build all my own bikes and wheels, I think I'm pretty handy when it comes to this kind of stuff.
Does anyone know of a similar rear hub that would fit into 120mm dropouts? Or do you know if it's hard to modify one of the above hubs to fit?
I then came across these friction drives, which I think are very interesting. I wouldn't need to modify anything, all I'd need to do is bolt the motor on. I could even take it off when I didn't need it.
qirollshop.com
I am considering the Aliexpress friction drive because that, plus a water bottle battery enclosure, some batteries and a BMS seems to be the most economical route. I think it would be more powerful than the cheapest qiroll kit too QR-E MUTE +B60 Battery Kit I think the motor of the qiroll looks nice, but the battery and throttle button look terribly designed. I would much rather have a stealthy water bottle that actually looked like a water bottle.
What are your thoughts? Does anyone have experience with the Aliexpress friction motor? What BMS do you recommend for a small DIY water bottle battery? Will I be "spinning out" with these lower powered motors at the speeds that I want to go at or will they still be helping me along?
I do have a fork that can take a disc brake and I would use that fork with a disc brake if I went electric. I Would also mount a rear brake and change the fixed cog to a freewheel.
![endless-sphere.com](https://endless-sphere.com/sphere/data/assets/logo/Orb-Logo-512.png)
Help me choose a motor / battery set up :)
This is the bike I want to convert, I know it's not ideal but I would prefer not to have to buy another bike and I have my heart set on using this one. It was my first proper bike, I now have other nicer bikes than it but I still want to use the frame for something. I know someone will come...
![endless-sphere.com](https://endless-sphere.com/sphere/data/assets/logo/Orb-Logo-32-transparent.png)
---
I know that an aluminium track frame is not the most suitable frame to turn into an ebike. I do have some other bikes, which are also all track frames
![Face with tears of joy :joy: š](https://cdn.jsdelivr.net/joypixels/assets/7.0/png/unicode/64/1f602.png)
![londonfixie_1692550856_3173669069055331334_46616144898.jpg londonfixie_1692550856_3173669069055331334_46616144898.jpg](https://endless-sphere.com/sphere/data/attachments/208/208126-a4fb2f0df88ddc25da5e9e0cce67a45e.jpg)
I have youtube channel https://www.youtube.com/@jetthepanda where I film my people riding around the city. Some of these people are abnormally fast freaks of nature, some are even pro's and even though I am actively training to get myself faster, I doubt I will ever be able to keep up with them when they are really pushing. So I've started looking into the idea of turning one of my bikes into an ebike. I am happy to do most of the work pedalling myself. I just need a little extra boost to help me sustain the higher speeds, which I think electricity would be perfect for. The speeds I'm having problems getting up to quickly and staying at are around 30mph and up, I can get there but not as quickly as the guys I'm following and I can't maintain it long enough to stay on the guys I'm filming.
I want to keep the bike looking as stealthy non ebike as possible. I was originally thinking rear hub with a bottle battery. I found these hubs with controller and torque sensor built into the hub, all you need to do is plug a water bottle battery in.
![keyde.com](/sphere/proxy.php?image=https%3A%2F%2Fkeyde.com%2Fu_file%2F2210%2Fphoto%2F99477e3bf8.png&hash=d6845c1b9d598713bbbc60fa849f4ad1&return_error=1)
![www.100g.tech](/sphere/proxy.php?image=https%3A%2F%2Fwww.100g.tech%2Fwp-content%2Fuploads%2F2022%2F04%2Fgeeko-rear-installation.jpg&hash=602c80f09199c37ded251487d247a25d&return_error=1)
Geeko Rear - Ebike Kit - 100g.tech
Geeko-Rear is the right ebike kit of cycling enthusiasts for daily commute, long distance riding, or serious mountain biking.
![www.100g.tech](/sphere/proxy.php?image=https%3A%2F%2Fwww.100g.tech%2Fwp-content%2Fuploads%2F2022%2F05%2Fcropped-logo-32x32.png&hash=e11ad52670d6b760b36d15d5250d8adc&return_error=1)
Does anyone know of a similar rear hub that would fit into 120mm dropouts? Or do you know if it's hard to modify one of the above hubs to fit?
I then came across these friction drives, which I think are very interesting. I wouldn't need to modify anything, all I'd need to do is bolt the motor on. I could even take it off when I didn't need it.
Ebike Conversion Kit-Qiroll ā Qiroll
![qirollshop.com](/sphere/proxy.php?image=https%3A%2F%2Fqirollshop.com%2Fwp-content%2Fuploads%2F2021%2F01%2Fcropped-QREP-500-1-32x32.png&hash=55b8b0d68f77c6d4051c41e9a9892ce9&return_error=1)
I am considering the Aliexpress friction drive because that, plus a water bottle battery enclosure, some batteries and a BMS seems to be the most economical route. I think it would be more powerful than the cheapest qiroll kit too QR-E MUTE +B60 Battery Kit I think the motor of the qiroll looks nice, but the battery and throttle button look terribly designed. I would much rather have a stealthy water bottle that actually looked like a water bottle.
What are your thoughts? Does anyone have experience with the Aliexpress friction motor? What BMS do you recommend for a small DIY water bottle battery? Will I be "spinning out" with these lower powered motors at the speeds that I want to go at or will they still be helping me along?
I do have a fork that can take a disc brake and I would use that fork with a disc brake if I went electric. I Would also mount a rear brake and change the fixed cog to a freewheel.
Last edited: