Came across this browsing the net, thought you might like this an O.H.C. 2 3/4 hp. made here in NZ. Seems a bit hairy to me, You would need to make sure you are wearing your bicycle clips o or it could shred the bottom of your trouser leg, no trouble at all.
Here is the linkhttp://www.barnstormers.co.nz/?p=111#more-111