RCU Forums - View Single Post - OS Gemini Twin Rear Walbro Gas Conversion
Old 08-06-2022, 11:03 AM
  #162  
1967brutus
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Originally Posted by mitchilito
Well I did fly a bunch this morning with the iridium plugs and it did oil foul on me. Wouldn’t start and run up the second flight. So I cleared the plugs (it was mostly the right one this time). I also disconnected the crankcase rebreather. I got three more flights after that without a problem.

Bye-bye rebreather!
What I would find interesting, is if you would have a peak RPM reading with, and without the rebreather. I would expect the RPM to rise by about 100 to 200 RPM, since the rebreather introduces not only oil (which should not make a difference wrt RPM), but also exhaust gas (piston ring blow by) which should displace some of the inducted air. More fresh air=more bang per revolution=more power.

Just curious what the possible difference might be.