Originally Posted by racie35
chainsaws,they work okay there,that's because power isn't as important as a sharp bladed tooth cranking fast...weedeaters too---same cheesy way out
The same reasons that make 2 strokes more desirable for chainsaws and weed eaters, also apply for motor bicycles.
A big heavy 4 stroke chain saw wouldn't make sense. Same reasoning applies for motor bicycles.