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.
Posted by Bob F on February 16, 2010, 7:53 am
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
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.
Posted by Bob F on February 17, 2010, 1:27 am
I don't think that's anywhere near the ratio being considered here.