I have 3W70 that starts and runs fine, but after 5 or 6 minutes of flying it starts to miss and losses power I have tried running it rich and there's no difference, and the engine is not hot.
changed props down to a 22X8 to be sure it not over propped and same thing, made sure there is ample air flow for cooling, sent ignition module into Cactus and it came back as tested good reinstalled and flew again still the same 5 minutes and losses power.
Can the pickup sensor cause a probelm like this?
I had a problem with a Brison 2.4 that would run for 8 ot 10 minutes and then it would die like it was shut off, turned out to be the hall effect sensor, big difference is the 3W70 does not die it will keep running like crap.
Shut it off and restart it 5 minutes later and the same thing for a few minutes it will run fine and then it starts missing again.
I have email cactus so far no reply.
Has anyone heard of this happening before?

Wyldman