Originally Posted by Hobbsy

Thanks AC, Glowy, I don't think I own an APC 12 x 6, I'll look though.

Jim, I'll have to search my pictures for some of the 130 stuff

Pet, I just ran the Saito 56 I rebuilt the G-Sonic made that high frequency bee buzz you talk about, it occured at 11,760 rpm

Saito 56 GK, newer model with front vent
Prop=== Graupner G-Sonic 12 x 6.
Plug====Taipan 4c Special
Fuel====Wildcat 10% with 18% full syn.
Muffler==Cast revised muffler
Max rpm after 30 minute refresher 11,760
Idle 2,100