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| Motorized Bicycle General Discussion Topics on bicycle engine kits, help articles, repair and modifications for your motorized bicycles |
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03-03-2009, 12:09 PM
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Motorized Bicycle Member
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Join Date: Jan 2009
Location: boston, ma
Posts: 32
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tensioner pulley
Quick question: where can one purchase a tensioner pulley or its components?
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03-03-2009, 12:31 PM
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Motorized Bicycle Elite Member
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Join Date: Oct 2008
Location: Urbandale Ia
Posts: 634
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Re: tensioner pulley
Quote:
Originally Posted by Graham
Quick question: where can one purchase a tensioner pulley or its components?
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What type are you looking for, just the standard one that comes with the kit?
John
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03-03-2009, 12:39 PM
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Motorized Bicycle Member
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Join Date: Jan 2009
Location: boston, ma
Posts: 32
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Re: tensioner pulley
nothing fancy...just whatever is going to get me back on the road asap
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03-03-2009, 12:46 PM
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Motorized Bicycle Newbie
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Join Date: Aug 2008
Posts: 19
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Re: tensioner pulley
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03-03-2009, 12:47 PM
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Motorized Bicycle Elite Member
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Join Date: Oct 2008
Location: Urbandale Ia
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Re: tensioner pulley
Quote:
Originally Posted by Graham
nothing fancy...just whatever is going to get me back on the road asap
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If all you need is the little pulley, alot of people use a skateboard wheel which is very easy to find. They come with roller bearings that have an 8 MM diameter. Should be what you need. They are better than the standard kit pulley. I usually turn my own out of Delrin.
John
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03-03-2009, 12:49 PM
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Motorized Bicycle Elite Member
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Join Date: Mar 2008
Location: Ontario
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Re: tensioner pulley
If you are really in a rush you could make one up or if possible just shorten the chain. Some bikes work out well without the thing.
You could also order one; Page Title
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03-03-2009, 01:28 PM
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Motorized Bicycle Member
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Join Date: Jan 2009
Location: boston, ma
Posts: 32
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Re: tensioner pulley
I want to do the skateboard wheel thing, but I dont have access to a lathe to carve into it. Could I get away without doing that or perhaps is there another method?
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03-03-2009, 01:38 PM
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Motorized Bicycle Newbie
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Join Date: Aug 2008
Posts: 19
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Re: tensioner pulley
You could put your drill in a vise or use a drill press for a poor man's lathe... I've done it, not pretty but pretty effective.
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03-03-2009, 01:38 PM
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Super Moderator
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Join Date: Sep 2008
Location: Littleton, Colorado
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Re: tensioner pulley
Quote:
Originally Posted by Graham
I want to do the skateboard wheel thing, but I dont have access to a lathe to carve into it. Could I get away without doing that or perhaps is there another method?
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I have not actually done it this way but I've read here where some guys have chucked the skateboard wheel into a drill and used a file to cut the chain groove. A drill press would work better and be safer than a hand drill. You'll need some way to keep the wheel from spinning on whatever you use through it. When I cut wheels on a lathe I remove the bearings and run a bolt through the bearing bore and tighten it. Then I chuck the bolt into the lathe. Something to keep in mind is that there are 2 different styles of skateboard wheel. The better ones are one piece ureathane and the less desirable ones have a solid inner core with a rubberized outer jacket. The 2 part ones don't lend themselves to being cut into because the outer skin comes off and leaves you with a hard core that isn't much better than the kit tensioner wheel. Good luck.
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Last edited by 2door; 03-03-2009 at 01:44 PM.
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03-03-2009, 02:14 PM
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Godfather of Motorized Bicycles
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Join Date: Jan 2008
Location: Ashtabula county, Ohio
Posts: 10,864
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Re: tensioner pulley
Quote:
Originally Posted by Graham
I want to do the skateboard wheel thing, but I dont have access to a lathe to carve into it. Could I get away without doing that or perhaps is there another method?
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Here's my "method".
I put the bolt through the skate wheel, "drive" the wheel with a bench grinder, and cut it with a hacksaw blade.....dangerous and exciting, but effective.
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If it ain't broke, and you mess with it long enough, it will be.
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