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Update on my engine:
I'm up to over 50 flights now. Best performance I'm getting is 7900 rpm on a 17x8 prop. Idle is around 2300-2400 rpm. I retarded the timing by moving the sensor towards the carb, but I cannot hand start it no matter how much I try. I prime flip 'till it fires, then choke off and flip a few more times, but best I get is a weak turnover.
Anyway, I'm frustrated that I don't get the performance you guys get. Maybe I got a lemon. I think this engine is getting the boot after this season. It can't even pull a decent vertical with a 9lb 13oz aircraft. It's a dog compared the Evolution 26. Next, I will try a Brillelli 26.  |
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without using a degree wheel your guessing on the timing. its only aprox 2-3degrees in the adjustment of the hall sensor. set it in the middle of the holes. i would try a 16x 8 prop on the motor. mine didnt perform well with the 17. it pulls hard at 7900 rpm with the 16x8. also i would look for a fuel restriction in the carb such as dirt in one of the jet holes (especialy under the main)take the carb off make sure the manifold isnt cracked around the mounting holes.also make sure you set the hi and low to exactly the 1 1/2 and 1 3/4 turns in the manual as this is the sweet spot.