How much nitro is too much
Bob,
What nitro content is the ceiling for my SJ-40, 46, and 50? I find myself with more and more 30% these day for my YS and Heli stuff. It would be easier to keep one fuel on hand but I can certainly keep buying lower nitro stuff for the speed planes.
Let me edit this to state I would prefer not to get into shimming the heads if I can help it.
Pete