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V-belt? - Page 3

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Posted by TomCat on February 16, 2010, 5:27 am
 


On Mon, 15 Feb 2010 11:53:56 -0800 (PST), harry


I am just curious, why is a belt or chain system not desirable once
you pass the 5 or 6 to 1 ratio. I am not much of a mechanical engineer
and can't seem to get my mind around that.
Tom


Posted by Bob F on February 16, 2010, 7:53 am
 


TomCat wrote:

It could have to do with how 'many teeth'/'much belt length' gets engaged on the
smaller wheel, unless the wheels are far apart.



Posted by harry on February 16, 2010, 8:33 pm
 


The above is exactly right. The gear ratios on pedal bikes are not
high.

Posted by vaughn on February 17, 2010, 12:48 am
 




   I haven't counted teeth, but the top gear on my 21-speed certainly exceeds
the 5 or 6 to 1 mentioned earlier.  And it isn't even technically a road bike.

Vaughn



Posted by Bob F on February 17, 2010, 1:27 am
 

vaughn wrote:

I don't think that's anywhere near the ratio being considered here.



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