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Old 01-14-10, 08:29 AM   #1
JerryTheSpinner
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Chain Motor on Currie 450W Electric Kit

My chain from the motor came off this morning. I was able to put it back on and resume my 9 mile commute. However, I have around 2,500 miles on the chain and was wondering what the life span of the chain is. Also, in replacing it, would I need to take the motor off in order to do that?
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Old 01-14-10, 01:34 PM   #2
nwmtnbkr
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Originally Posted by JerryTheSpinner View Post
My chain from the motor came off this morning. I was able to put it back on and resume my 9 mile commute. However, I have around 2,500 miles on the chain and was wondering what the life span of the chain is. Also, in replacing it, would I need to take the motor off in order to do that?

Your chain is probably fine. You need to check the tension on the motor plate once and a while and may need to tighten it periodically (if it's loose enough, you may need to slide the plate away from the axle to tighten it--look at step 4 in the conversion kit installation instructions that I've attached, but envision the wheel still being on the bike--you shouldn't have to take the wheel off if you have a cone wrench the right size). Just be careful not to get the tension too tight since that could damage the motor.

http://www.izipusa.com/img//pdf/6437...7a32e3ed05.pdf

It isn't a big deal to remove the motor drive freewheel or chain. In fact, there's a mod described on ecoforumz.com to bump up the speed of the standard OEM ezip bikes or conversion kits by installing a smaller motor drive freewheel--moving from a 20 tooth to 16 tooth freewheel. Here's a link to the thread on that mod, including information on where you can purchase a left threaded, 11 tooth freewheel. http://www.ecoforumz.com/electric-bi...-oem-pack.html

Last edited by nwmtnbkr; 01-14-10 at 02:08 PM.
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Old 01-15-10, 09:41 AM   #3
JerryTheSpinner
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Originally Posted by nwmtnbkr View Post
Your chain is probably fine. You need to check the tension on the motor plate once and a while and may need to tighten it periodically (if it's loose enough, you may need to slide the plate away from the axle to tighten it--look at step 4 in the conversion kit installation instructions that I've attached, but envision the wheel still being on the bike--you shouldn't have to take the wheel off if you have a cone wrench the right size). Just be careful not to get the tension too tight since that could damage the motor.

http://www.izipusa.com/img//pdf/6437...7a32e3ed05.pdf

It isn't a big deal to remove the motor drive freewheel or chain. In fact, there's a mod described on ecoforumz.com to bump up the speed of the standard OEM ezip bikes or conversion kits by installing a smaller motor drive freewheel--moving from a 20 tooth to 16 tooth freewheel. Here's a link to the thread on that mod, including information on where you can purchase a left threaded, 11 tooth freewheel. http://www.ecoforumz.com/electric-bi...-oem-pack.html

Thak you so much nwmtnbkr for all your help.

Jerry
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