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[rebel-builders] Rebel 912 engine mounts - was Empty weight

Posted: Sun Feb 19, 2012 4:43 pm
by Bob Patterson
Just changed the header for the benefit of those searching later !

Having flown several 912 Rebels, I can completely endorse Jim's
advice ! The 3" longer mount for the 912 makes for a much nicer
flying Rebel, with a wider useful operational loading range. Early
912 Rebels required ballast in the nose, and/or were pretty limited
in baggage weight - not for performance reasons, just CofG ...

I would definitely use the longer mount, whether for 1,320 lb,
or 1,650 lb. - and the mount that Daniel builds is a work of art !
It's a ring mount, with decent rubber mounts, that really distributes
the load and smoothes vibrations. With an aluminum 4 door cowl,
it gives a nice, sleek looking nose that really makes maintenance
easy ! I think there's a pic of Jim's Rebel in the archives ....

--
......bobp
bobp@prosumers.ca
http://www.prosumers.ca
http://bpatterson.qhealthbeauty.com
http://apatterson2.qhealthzone.com
http://apatterson2.ordermygift.com

-------------------------------orig.-------------------------
On Monday 23 June 2008 12:58, Jim Cole wrote:
Hi Chris, Murphy doesn't have the mount - I had it made by Daniel
Sasseville, who is the Eastern Canada rep for Rotax.

http://www.rotaxservice.com/

I wanted to register mine at 1650, and wanted to make sure that the C of G
was sufficiently forward so that I could use the full carrying capacity of
the Rebel without being too tail heavy. A by-product of the extension was
that the Rebel looks long and relatively sleek - almost turbine like
(I might exaggerate a little) - at least on par to the 320 Rebels. With
full fuel (3 bays aside - 44 Gals) and 2 people I can put 200 lbs behind
the seats and still be within the C of G limits.

Some of these issues of course are not relevant to a 1320 Rebel - but IMHO
it has a nice balanced look.

Cheers
Jim R333

On 6/23/2008 6:53 AM, "Karen McCaffery" <cristucker@webtv.net> wrote:
I also plan on finish building kit #719R as Ameteur Built 1320# to meet
LSA. I am considering the Rotax 912 more seriously now and wish a few
guys could elaborate on the issue of the 912 engine being moved 3 inches
further forward or NOT. Can you buy a motor mount from MAM that
positions the engine 3 inches further forward or do you have to custom
make one? Thanks,
Cris 719R


-----Original Message-----
From: Bob Patterson
Sent: Sunday, June 22, 2008 6:11 PM
To: rebel-builders@dcsol.com
Subject: Re: [rebel-builders] Empty weight

?
Hi Charlie !

? ? Sounds like you are on the right track !
I would recommend NOT using that Scott - several
bad experiences ... ? ?The Murphy tailwheel works
fine - maybe better if you can find a pneumatic tire
that fits (seen a couple at Princess Auto ... )

? ? If you have that solid slab of aluminum they call
a tailspring, you should grind or mill it down, to taper
in thickness from full at the clamp, to about 1/4" - 3/8"
at the tire end. ?That will give it some flex - and reduce
weight ! ? :-)

? ? Definitely do the FUS-30 mod, and the channel
across the bottom of the panel - not sure what the
other one is.....

? ? Your weight should come in around the 750 - 800 lb.
range, with all that.



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