I find that opti is quite smoky anyway. How hot does your engine get?? The simplest way to check is to hover the heli for a minute or 2 just to get the engine warmed up then land and put your finger against the back plate, you should be able to keep your finger there without getting burned
. This isn't an exact measure but will get you roughly where the engine should be!
Sent from my iPhone using Tapatalk
. This isn't an exact measure but will get you roughly where the engine should be!Sent from my iPhone using Tapatalk



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