| | | Motor Bicycle Safety Share safety tips for motorized bicycles. Some of these bicycle engines will reach great speeds and need respect. | Chain tensioner "suggestions" Discussion at Motorized Bicycle Engine Kit Forum in the Motor Bicycle Safety forum. Bots and sneakeh bastids with too much time on their hands, tryin' to sell laxatives lol...  | | 
11-06-2009, 12:57 PM
|  | Moderator | | Join Date: Jul 2009 Location: Maine
Posts: 1,186
| | Re: Chain tensioner "suggestions" Bots and sneakeh bastids with too much time on their hands, tryin' to sell laxatives lol | 
11-06-2009, 03:06 PM
|  | Moderator | | Join Date: Sep 2008 Location: Littleton, Colorado
Posts: 1,902
| | Re: Chain tensioner "suggestions" Quote:
Originally Posted by george_n_texas | The only problem with the Brewer part I see is that they don't offer one for #41 chain. 40 and 41 are not the same.
Roller Width: #40= .312---#41= .250
Roller diameter: #40= .312---#41= .306
Overall width: #40= .717---#41= .579
Not sure how well your chain will ride that sprocket. (Kit supplied chain in most cases is #415, same as #41)
Tom
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11-06-2009, 03:18 PM
| | Motorized Bicycle Elite Member | | Join Date: Sep 2009 Location: Texas
Posts: 275
| | Re: Chain tensioner "suggestions" My kit said 410 with matching sprockets is that bad or good or just different?
Have you tried the new and improved exlax? It's not your grandma's prunes anymore! | 
11-06-2009, 03:24 PM
|  | Moderator | | Join Date: Sep 2008 Location: Littleton, Colorado
Posts: 1,902
| | Re: Chain tensioner "suggestions" Quote:
Originally Posted by george_n_texas My kit said 410 with matching sprockets is that bad or good or just different?
Have you tried the new and improved exlax? It's not your grandma's prunes anymore! | If my information is correct 410 is the same as BMX chain. Looks like bicycle chain but just a little beefier. Some of the newer Grubee kits have it. Nash-Opel got 410 in his kit but oddly, it didn't fit his sprockets. He went to #41 and everything fit like it's supposed to.
Tom
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11-06-2009, 03:53 PM
| | Motorized Bicycle Elite Member | | Join Date: Sep 2009 Location: Texas
Posts: 275
| | Re: Chain tensioner "suggestions" Thank you! I got my Grubee Skyhawk from King's and that is what sold me, that and the newer carb with the shutoff valve. Only other thing I want in my next kit is a 4 bolt tensioner and a larger tank. | 
11-07-2009, 12:10 AM
|  | Motorized Bicycle Elite Member | | Join Date: Mar 2008 Location: Treasure Coast, Florida
Posts: 747
| | Re: Chain tensioner "suggestions" I like the TSC spring tensioner. I put it on my Magna Glacier Point along with #41 chain well over 2000 miles ago and have had NO problems.... Spring Return Chain Tensioner
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48cc Grubee Starfire Round Head......
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11-07-2009, 01:24 AM
|  | Motorized Bicycle Elite Member | | Join Date: Oct 2009 Location: dundas ontario
Posts: 197
| | Re: Chain tensioner "suggestions" this is what i did for mine, i took a block of uhmw and cut it into a small rectanges using a ban saw, then i just cut a groove out for the chain, and tapped it onto the bracket! it worked like a charm, i have over 4000kms on it and will be using it on my new 4 stroke build, hope to get many thousands more kms out of it,
sorry for the bad picture but its all i have, 
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11-16-2009, 11:37 PM
|  | Motorized Bicycle Newbie | | Join Date: Nov 2009 Location: bourbonnais il
Posts: 4
| | Re: Chain tensioner "suggestions" Great ideas, back to the shed for another brain storm, good thing its heated. | 
11-17-2009, 01:01 AM
| | Motorized Bicycle Newbie | | Join Date: Jun 2009 Location: shawano wisconsin
Posts: 9
| | Re: Chain tensioner "suggestions" awsome idea, i think ill get started on one tomarrow | 
11-17-2009, 01:03 AM
|  | Motorized Bicycle Elite Member | | Join Date: May 2008 Location: PENSACOLA, FL
Posts: 1,146
| | Re: Chain tensioner "suggestions" Here Is A Handy Chain Chart. For Me Anyway. I Have A Good Memory, But It`s Short! Ron
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