RE: JBA .56
This new muffler comes with the new 56 F series engine.
I've tested this new engine (pre-series batch) for a spanish local R/C magazine review.
It's more powerful than old style JBA56 AND more powerfull than OS55AX (also reviewed)
Production batch are painted in blue (cranckase and head).
I'm very impressed with the performance and reliability of this engine. It can turn little props at hi rpm. (> 16.000) or a big 14x7 prop at more than 9.000 rpm without overheating.
Almost 14.000 rpm with 11x6MA.