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Old 07-24-2004 | 06:10 PM
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CSpierings
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From: North Freedom, WI
Default Interference with Gas engine

Last year a finshed up an old G Shark MKII that had been sitting around for quite a while.

The motor is a Quadra 42 CD. Two batteries and switches each battery sits alongside the fuel tank just ahead of the landing gear. THe switches are the MPI heavy duty and mounted just ahead of the canopy one on each side of the plane. The throttle servo sits just behind the carb mounted such that a short rod runs from the servo output wheel to a nylon arm on the throttle butterfly.

I got a few flights in on the plane now and I'm gettting some sort of glitching. In an effort to isolate the cause I've done the following.

Moved the receiver 10" further back in the plane...

Re routed the antenna twice.. first mounting out the bottom, second out the side to an H. Stab tip and finally out the top just behind the canopy to the tail

Switched receivers and crystals

removed the wing removing 2 long servo leads to ailerons

individually disconnected each servo from the receivers not including throttle

Removed the dubro pull pull rudder cable (plastic coated metal).

Verified that all the linkages and tail wires (kevlar) are tight and lock tighted along with all the servo arms etc..

I'm left with about 3 things I can think of to sort this out:

Disconnect the throttle servo... Coming up with another linkage to make geometery work given the arm orientation is gonna be tough.

Move the batteries further back...

Replace the ignition module etc..

Anyone else have suggestions?

Thanks

CHris