From: RWolf99@aol.com
Message-ID: <63e172d0.367b4020@aol.com>
Date: Sat, 19 Dec 1998 00:56:48 EST
To: lancair.list@olsusa.com
Subject: 360 Engine Mount -- The long and short of it
Mime-Version: 1.0

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Hi!  I've had my LC20 SFB kit for several years now, but have only managed to
get 300 hours building time so far.  Progress is picking up, though, and I
hope to have the landing gear retracting/extending next month.  I have read
all the past e-mails posted here, though I only discovered this site a few
weeks ago.  (And yes, I've sent my money -- it's worth every penny and more!)

I have the short engine mount, and it is installed with the nose gear attached
and the stainless/fiberfrax in place.  I'd like to avoid switching to the long
mount if I can (though I wish I'd installed the longer one).  I don't know
whether I have the long or short cowl.  My plan is to use an O-360 with a
3-blade MT hydraulic propeller.

1)  Will I have to do surgery on the firewall (that could be avoided with the
long mount) for any reason? (fitting the prop governor, for example)

2)  How far forward is my CG likely to be in this configuration?  I plan to
mount the hydraulic pack behind the seat.  I'll have a header tank with the
outer wing bay dry.  Battery behind the seat (probably, unless I can move it
up).

3)  Has anyone besides Angier changed from the short to the long?  What
problems did you encounter?

4)  A previous post by Tom Giddings stated that there was no forward CG shift
with the longer mount.  How is this possible?  Can anyone else confirm this?

I've flown in two 360's.  One had a small tail and was so pitch sensitive I
thought it's airworthiness certificate should be revoked.  The other (Orin
Riddell's) had a large tail and flew like a dream.  I suspect the pitch
sensitivity had much more to do with CG location than tail size.  I don't know
whether the small-tail 360 had Bill Russell's the elevator control horn
"modification" done.

Thanks in advance.

- Rob Wolf
RWolf99@aol.com
Lompoc, CA