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Old 04-21-2009, 07:46 PM
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Bass1
 
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Join Date: Dec 2002
Location: Va.Beach, VA
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Default RE: choke servo or optical kill

I was flying my 50cc Yak last summer when suddenly about half way into the flight I couldn't reduce the throttle below about 3500 rpm on my Brison 3.2.[X(] Flew around for several more minutes and set up a nice long straight in approach and about 60 feet out from the runway threshold I hit my servo activated ignition battery kill switch. Came in for a nice soft and safe power off landing. Upon thorough post flight inspection (removed the carb) I found the little screw holding the throttle butterfly in the carb had backed out a turn or so causing the butterfly to rattle around and bang against the carb throat and bent and smashed the edges of it causing my unexpected in flight emergency. I'm glad I had the alternate engine kill as it was my 4th flight of the day on the initial charge and my receiver battery was just about out of juice.