Hi Jeff,
The wobble occurs when I do a fast dethrottle from high rpm to idle. At this
point the engine wobbles side to side and then stalls. I suspect the wobble
occurs from normal centrifigal force and because I have a 'spongy' engine
mount it becomes exagerated. I believe all cylinders are firing correctly.


I can't rule out other issues that may be causing this. The wobble is the
most likely cause given what I've seen.

Thanks Much, I'll report back further findings.

-Bob



Jeff wrote:
* rcgamble wrote, On 7/10/2007 5:30 PM:
Hello,
I have pair of 2GM20FC's with SD20's on my catamaran. I don't see
the connection between stalling and engine mounts. If the engine has
an imbalance, such as one cylinder not firing, or a misbehaving
folding prop, there will be a lot of wobble that can be very dramatic
on the soft saildrive mounts. The wobble sounds more like an effect,
not a cause.

I have a Yanmar 3gm30fc w / SD20 Saildrives that stalls when reducing RPM. I
think I've isolated the problem to be with the engine mounts. The engine
[quoted text clipped - 9 lines]
Thanks,
Bob

--
www.rcgamble.com

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