Killeen, Texas - USA
My Posts: All Forum Topic
I don't think there is any difference power wise between the regular Zenoah 20 and the new HWC 20...even with a tuned muffler I could never get more than an estimated 1.9 hp on a stock engine...granted I used two different props and a static thrust calc to estimate the HP after measuring max RPM. The specs for each are identical by what I can see so my guess is its just a cheaper "clone" of the 20.
Good luck...make sure you don't run it lean.
showing a preference will only get you into trouble, 90% of everything is crap...