Why do mopeds use smaller wheels rather than larger wheels?

Subject: Why do mopeds use smaller wheels rather than larger wheels?

Date: Tue Jul 10 01:56:03 2001
Posted by No name entered.
Grade level: undergrad School: No school entered.
City: No city entered. State/Province: No state entered. Country: No country entered.
Area of science: Engineering
ID: 994744563.Eg

Message:


I want to construct a minibike from a bicycle and a chainsaw engine.  I'm not 
sure on the way ratios work and why smaller wheels work better.  By chance. . . 
this contraption should work shouldn't it. 
P.S. A lot of minibikes have 3 hp engines and go about 30 mph. . . so I figure 
a chainsaw of at least 2-2.5 hp would be sufficient for a 130 lb. person

Re: Why do mopeds use smaller wheels rather than larger wheels?

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