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Chain size for 70cc Chinese
Discussion at Motorized Bicycle Engine Kit Forum in the Motorized Bicycle General Discussion forum. Thanks for all your help, love reading the great tips and tricks !! I was hoping somebody could tell me the ...  | 
04-29-2008, 08:28 PM
|  | Motorized Bicycle Builder | | Join Date: Apr 2008 Location: Winnipeg, Manitoba, Canada
Posts: 47
| |  Chain size for 70cc Chinese
Thanks for all your help, love reading the great tips and tricks !! I was hoping somebody could tell me the exact size of the chain on my 70cc ?? Moved the engine onto another bike and you guessed it- too short!!-. No markings can be seen anywhere. Thank you in advance...... |
04-29-2008, 08:49 PM
|  | ADMINISTRATOR | | Join Date: Dec 2007 Location: St. Croix, US Virgin Islands
Posts: 1,555
| |  Re: Chain size for 70cc Chinese
it is a 415 however a #41 will work great with a motorized bicycle which you can get enough for 2 chains from most any farm supply store for around $13.00 |
04-29-2008, 08:59 PM
| | Motorized Bicycle Builder | | Join Date: Apr 2008 Location: Winnipeg, Manitoba, Canada
Posts: 47
| | Re: Chain size for 70cc Chinese
Funny you mentioned that, I found some 41 in the shed and seems to fit just fine. The only thing is that its a little wider than the original. I imagine it may slide back and forth on the sprockets making a small groove on the engine case over time. I'm I correct to think this ? Or do they make a narrow 41 ? |
04-30-2008, 07:23 AM
|  | Moderator | | Join Date: Jan 2008 Location: Ashtabula county, Ohio
Posts: 2,458
| | Re: Chain size for 70cc Chinese
If your chain run is straight it should stay pretty much in the middle and not cause any problems with the cases.
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If it ain't broke, and you mess with it long enough, it will be. |
04-30-2008, 07:52 AM
| | ADMINISTRATOR | | Join Date: Dec 2007 Location: St. Croix, US Virgin Islands
Posts: 1,555
| | Re: Chain size for 70cc Chinese
actually no for i checked mine. i think the wider gap is an advantage for it is next to imposible to mount the rear sprocket on your spokes and have it perfect so thier is a little wabble and the chain is able to stay straight with the little play that is now allowed. i got a lot of miles on that 411 chain and have checked every thing. i keep hearing of others having thier 415 chain brake including mine so they are not to good. the advantages of the 411 chain is the extra gap, a heck of a lot cheaper, i think it is made of a better grade of steel so stronger, its readly available along with the parts for them. the 411 chain is a perfect match for the motorized bicycle in my opinion |
04-30-2008, 01:01 PM
| | Moderator | | Join Date: Jan 2008 Location: Ashtabula county, Ohio
Posts: 2,458
| | Re: Chain size for 70cc Chinese
Quote:
Originally Posted by CRUISER  i think the wider gap is an advantage for it is next to imposible to mount the rear sprocket on your spokes and have it perfect so thier is a little wabble and the chain is able to stay straight with the little play that is now allowed. |
That makes perfect sense.
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If it ain't broke, and you mess with it long enough, it will be. |
04-30-2008, 04:48 PM
| | Motorized Bicycle Builder | | Join Date: Apr 2008 Location: Winnipeg, Manitoba, Canada
Posts: 47
| | Re: Chain size for 70cc Chinese
Checked it out and it runs smooth on the sprockets. 41 it is !!! Thanks again for great info !!! | | Thread Tools | | | | Display Modes |  Linear Mode | 
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