FYI my engineering to calculate the proper size industrial, flat, toothed, timing belt between the motor shaft and turbine shaft was quite sound for up to a 40 mph wind....however we saw a 68mph gust, that probably ripped the teeth right off the belt. Ha Ha.
To this day it still amazes me the stupid things I do for this hobby.
Art's blades still look new, but they must have been going supersonic!---------Dean-----------[ Parent ]