Dick - regardless of how it "performed", that ZM prop is pretty cool looking! Shame that appearance doesn't equal performance.
Sounds like your sample ran pretty well. That was stock single-tube can?
ORIGINAL: dick Hanson
I ran one of these engines as a lookee -and on the MSC22x8 - close to 7000 using muffler provided . It revs right along with Mezjlic 22x8 -sorta
If you judge prop load by appearance , wider- thicker etc., you will not get result you may assume - one of the biggest load props I have for a 50 is a very narrow thin prop from ZM
engine was nice n smooth easy to operate
sizewise larger than DA/ZDZ --more like 3W.