Originally Posted by
jkr_1100
create a chart of all engines, there weight, and power and then map them out in a chart
you will find the Saito 1.25 has the highest power to weight ratio of any engine.
ahh statistics
According to
SAITO'S OWN SPECIFICATIONS:
FA-115 2.1 HP 586g = 3.58 HP per Kg
FA-125 2.2 HP 620g = 3,55 HP per Kg
FA-100 1.8 HP 550g = 3.27 HP per Kg
Seems that the FA-115 has a slightly better power to weight ratio than the FA-125 and significantly better than the FA-100..
Comparing bore/stroke:
FA-115 31.7mm/24mm is 32% over square
FA-125 31.7mm/26mm is 22% over square
FA-100 29.0mm/26mm is 12% over square.
We are not pulling stumps here, we are turning propellers at near peak HP static.