WHAT PISTON ENGINES ARE SUITABLE FOR A PA?
Hugh Currin has build a wonderful and simple PA using a Honda string trimmer motor, which is a 22cc four stroke ICE. It is the recumbent pictured at top. Anyone thinking of doing something similar should visit his informative site.. A good motor for a PA is between 20cc and 50cc. Most of them turn about 6000 rpm so a pretty good speed reduction will be needed on the order of 15:1 or greater. Leaf blowers and string trimmers seem to be the most popular and reasonably priced sources for small ICE engines. Post hole diggers are also a possibility, and many of these also come with suitable gear reductions. Of course it’s best to encourage the use of the cleanest motor possible. Four strokes are generally much cleaner and quieter than two strokes. A small two stroke motor can put out significantly more pollutants than the average automobile. www.azdirtwirks.com sells a Honda GX31 engine mated to a 5:1 gearbox. It is intended as a power drive for a Viza scooter. This apparently sells for abo
