Comments on: The $175 Electric Bike http://www.summet.com/blog/2009/07/26/the-175-electric-bike/ My external memory Wed, 08 Feb 2012 18:00:09 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Jay http://www.summet.com/blog/2009/07/26/the-175-electric-bike/comment-page-1/#comment-8248 Jay Fri, 09 Jul 2010 14:10:58 +0000 http://www.summet.com/blog/?p=733#comment-8248 John, I ordered the largest sprocket my surplus supplier had, and the smallest sprocket the motor came with. It's hard to gear an electric motor too high for a bicycle ;> You could use a smaller sprocket for speed, especially if your motor was stronger than my 250 watts, but I was trying to maximise torque, and wasn't looking to go terribly fast. BTW- Thanks for the URL to an alternate (but slightly more ghetto) sprocket/wheel mounting system: http://www.youtube.com/watch?v=k3YFmtb6JEA&feature=email John, I ordered the largest sprocket my surplus supplier had, and the smallest sprocket the motor came with. It’s hard to gear an electric motor too high for a bicycle ;> You could use a smaller sprocket for speed, especially if your motor was stronger than my 250 watts, but I was trying to maximise torque, and wasn’t looking to go terribly fast.

BTW- Thanks for the URL to an alternate (but slightly more ghetto) sprocket/wheel mounting system:

]]> By: John. http://www.summet.com/blog/2009/07/26/the-175-electric-bike/comment-page-1/#comment-8247 John. Fri, 09 Jul 2010 05:08:31 +0000 http://www.summet.com/blog/?p=733#comment-8247 how did you decide how big or small to install your sprocket ? how did you decide how big or small to install your sprocket ?

]]> By: Jay http://www.summet.com/blog/2009/07/26/the-175-electric-bike/comment-page-1/#comment-8245 Jay Fri, 09 Jul 2010 00:54:40 +0000 http://www.summet.com/blog/?p=733#comment-8245 John: Top speed without pedaling is around 10 mph. I've never noticed the motor getting too hot. Jay John: Top speed without pedaling is around 10 mph. I’ve never noticed the motor getting too hot.
Jay

]]> By: John. http://www.summet.com/blog/2009/07/26/the-175-electric-bike/comment-page-1/#comment-8244 John. Thu, 08 Jul 2010 20:47:03 +0000 http://www.summet.com/blog/?p=733#comment-8244 How fast does this bike go without over doing it.? Does the motor get hot ever? How fast does this bike go without over doing it.?
Does the motor get hot ever?

]]> By: Jay http://www.summet.com/blog/2009/07/26/the-175-electric-bike/comment-page-1/#comment-8229 Jay Fri, 25 Jun 2010 19:03:48 +0000 http://www.summet.com/blog/?p=733#comment-8229 Taja, It's only a 250watt (rated, running closer to 350w) motor. I never had a problem with the chain (although I sometimes had problems with the mechanical linkages I had built). Jay Taja,
It’s only a 250watt (rated, running closer to 350w) motor. I never had a problem with the chain (although I sometimes had problems with the mechanical linkages I had built).
Jay

]]> By: Teja http://www.summet.com/blog/2009/07/26/the-175-electric-bike/comment-page-1/#comment-8228 Teja Fri, 25 Jun 2010 18:48:54 +0000 http://www.summet.com/blog/?p=733#comment-8228 Hey Jay, Did u ever experience any slippage(excess) with the #25 roller chain, don't you think #25 is too small a size for such a task. Hey Jay,

Did u ever experience any slippage(excess) with the #25 roller chain, don’t you think #25 is too small a size for such a task.

]]> By: Jay’s Technical Talk › Vacuuform motor cover http://www.summet.com/blog/2009/07/26/the-175-electric-bike/comment-page-1/#comment-7950 Jay’s Technical Talk › Vacuuform motor cover Mon, 09 Nov 2009 00:21:21 +0000 http://www.summet.com/blog/?p=733#comment-7950 [...] since I mounted an electric motor to the front wheel of my bicycle I have been keeping a plastic bag over the motor with a clothespin [...] [...] since I mounted an electric motor to the front wheel of my bicycle I have been keeping a plastic bag over the motor with a clothespin [...]

]]> By: teja http://www.summet.com/blog/2009/07/26/the-175-electric-bike/comment-page-1/#comment-7931 teja Tue, 27 Oct 2009 20:46:55 +0000 http://www.summet.com/blog/?p=733#comment-7931 nice work dude! I'm planning to build an electric bike, i learnt a lot from ur blog. i have an advice for u, try mounting one more of the PVC pipes on the other side of the motor, it'll make the cycle look more symmetrical. nice work dude!
I’m planning to build an electric bike, i learnt a lot from ur blog.
i have an advice for u, try mounting one more of the PVC pipes on the other side of the motor, it’ll make the cycle look more symmetrical.

]]> By: Jay’s Technical Talk › Bike Lighting: $15 http://www.summet.com/blog/2009/07/26/the-175-electric-bike/comment-page-1/#comment-6910 Jay’s Technical Talk › Bike Lighting: $15 Fri, 31 Jul 2009 02:07:29 +0000 http://www.summet.com/blog/?p=733#comment-6910 [...] case I need to commute home after dark on my electric bike, I added a front headlight (5 watt MR11 halogen) and a rear tail light (Red LED tail light for [...] [...] case I need to commute home after dark on my electric bike, I added a front headlight (5 watt MR11 halogen) and a rear tail light (Red LED tail light for [...]

]]>