Ron,
Thanks for your response, glad to know it's not just our donkey
thats got the wobbles. I'll let you know how the mag drop goes, probably
won't be for a couple of weeks though, due to holidays etc.
Tony
----- Original Message -----
From: "J. R. Jones" <jronjones@lineone.net>
Subject: Re: Europa-List: 912S Resonance / Vibration
>
> Tony,
> I have the same set-up as you (XS, 912S, 21.5degrees) and have clocked up
> 150 hrs.
> From new I have had a vibration at 3000 rpm - not too bad but enough to
> annoy!
> The engine is smooth at all other settings and I have had the prop
balanced
> three times with no (or very slight) improvement.
> One thing which does puzzle me, though - and no-one has been able to
explain
> (Skydrive included) - is that, while there is no appreciable mag drop at
> either 4000 or at 2000 rpm, at 3000 there is a marked miss-fire on left
mag
> only and,of course, a vibration to match !
> Could the problem be purely ignition related and not an imbalance ?
> I would be very interested to hear what happens when you try a mag check
at
> your vibration rpm if you would be so kind.
> Regards,
> Ron Jones.
> (XS, 359, G-RJWS)
>
>
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