Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Electric Bikes Here's a place to discuss ebikes, from home grown to high-tech.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 12-15-09, 10:27 PM   #1
Mr_Wrench
Bicycle Tinker'er
Thread Starter
 
Join Date: Jun 2006
Location: Kansas city MO
Bikes: Focus TD-400 Touring Bicycle
Posts: 174
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Help with eBike idea

Hi everyone,

I'm a long-time bikeForum member new to the idea of electric bikes. I was hoping to get some thoughts on the feasibility of converting my Azuki Single Speed bike into an electic. I was thinking I'd go with a hub motor on the rear. I have a really solidily built steel rim, all steel tubing. I also have a steel double-butted fork which might make it a better candidate for a front-wheel hub? This is where you guys come in. Which eletric motor/battery would best this bike? Also, it should be noted it has 27'' wheels.

Any thoughts and suggestions would be appreciated. I'm looking to do this on the cheap, I don't have more than a couple hundred to put into it. I'm very serious though about making something strong and built to last. I just don't have the dough

My whole design idea is basically efficiency to the max. Right now, as you can see in the picture below, I have a pretty big 3:1 gear ratio going on. I figured with the right motor I could do some serious milage with pedal-assistance, while pedaling at my usual cadence of 70-80 RPM

http://www.flickr.com/photos/abracad...57607745426742

Thanks in advance!

Last edited by Mr_Wrench; 12-15-09 at 10:34 PM.
Mr_Wrench is offline   Reply With Quote
Old 12-15-09, 10:44 PM   #2
nwmtnbkr
Senior Member
 
nwmtnbkr's Avatar
 
Join Date: Jul 2009
Bikes:
Posts: 1,054
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Mr_Wrench View Post
Hi everyone,

I'm a long-time bikeForum member new to the idea of electric bikes. I was hoping to get some thoughts on the feasibility of converting my Azuki Single Speed bike into an electic. I was thinking I'd go with a hub motor on the rear. I have a really solidily built steel rim, all steel tubing. I also have a steel double-butted fork which might make it a better candidate for a front-wheel hub?

Any thoughts and suggestions would be appreciated. I'm looking to do this on the cheap, I don't have more than a couple hundred to put into it. I'm very serious though about making something strong and built to last. I just don't have the dough

My whole design idea is basically efficiency to the max. Right now, as you can see in the picture below, I have a pretty big 3:1 gear ratio going on. I figured with the right motor I could do some serious milage with pedal-assistance, while pedaling at my usual cadence of 70-80 RPM
x
http://www.flickr.com/photos/abracad...57607745426742

Thanks in advance!
Welcome. That's a beautiful bike and a good choice for an e-bike conversion since it's steel. If you're willing to consider a non-hub motor, you may have more options for a low-cost conversion. Here's an link to an interesting discussion on Endless-Sphere's general e-bike forum on inexpensive e-bike builds. http://endless-sphere.com/forums/vie...hp?f=3&t=13789
It will be difficult to get a hub motor, controller, throttle and battery for under $200; there seems to be a premium charged for building a hub motor wheel. Also, be prepared for battery sticker shock if you're thinking of using newer, more efficient battery technology, like LIFEPO4.

I just converted my 21-speed mountain bike this summer using the Currie conversion kit, which is a 450W, 24V non-hub motor kit. My total cost was $279 (with free shipping from the superkids.com--they still have it at that price) and the kit had 1 24V, SLA battery pack. There's an added advantage for me with this kit; it's got great torque, which I need for the hills here in the Rocky mountains.

If you want a hub motor, a rear wheel installation is safer. You'll definitely need toque arms for either a front or rear hub motor installation. I'd encourage you to read threads at Endless-Sphere--there are many DIYers on that forum. You can get some good ideas.

Good luck.
nwmtnbkr is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 08:24 PM.