RCU Forums - 55AX sensitive needle

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Blade-breaker

07-26-2008 11:53 PM

55AX sensitive needle

I purchased my 55 AX new. I have not crashed,droped or damaged the engine (yet). I have always had a slight difficulty keeping a tune on the engine.

Today I noticed when I was tuning the engine that if i touch the needle valve with a very slight side pressure ( not turning ) it will change the engine tune.
Any ideas>

Bax	07-28-2008 09:48 AM

RE: 55AX sensitive needle

The needle could have a bad fit in its mounting tube, so that a slight wiggle will change the setting. You can tighten the needle a bit by using some teflon plumber's tape around the threads to eliminate some play.

Blade-breaker

07-28-2008 11:21 PM

RE: 55AX sensitive needle

I will give it a try.
Thanks

thesouth1

07-31-2008 09:53 AM

RE: 55AX sensitive needle

I was tuning mine at the field the other day and noticed the same thing, I thought it was just me...

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