Subaru conversions/cowlings

Mike Davis · Post by **Mike Davis** » Fri Feb 17, 2012 4:51 pm

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To: <murphy-rebel@dcsol.com> (Murphy Rebel)
From: Bob Patterson <bob.patterson@canrem.com>
Subject: Re: Subaru conversions/cowlings
Message-Id: <E0ziK0p-0007LO-00@mail2.toronto.istar.net>
Date: Tue, 24 Nov 1998 10:04:19 -0500

No, yours is fine !! I was talking about the prop shaft extention,
the special exhaust system, and the huge spinner - expensive 'extra bits' !
:-)
....bobp
-----------------------------------orig.-----------------------------
At 11:56 PM 11/20/98 EST, you wrote:

Hi Bob

My cowling is complete and I did not have to get any 'extra bits' to

complete

it. Simply the piano hinge that came with it. Am I missing something? It
looks fine to me.

Brian

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Mike Davis · Post by **Mike Davis** » Fri Feb 17, 2012 4:52 pm

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From: "Joel Jacobs" <jj@netexp.net>
To: "Murphy Rebel" <murphy-rebel@dcsol.com>
Subject: Re: Subaru conversions/cowlings
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-----Original Message-----
From: Bob Patterson <bob.patterson@canrem.com>
To: Murphy Rebel <murphy-rebel@dcsol.com>
Date: Tuesday, November 24, 1998 9:54 AM
Subject: Re: Subaru conversions/cowlings

No, yours is fine !! I was talking about the prop shaft extention,
the special exhaust system, and the huge spinner - expensive 'extra bits' !

So, the speed cowl was designed to be used with a prop shaft extention?
This sounds encouraging since my prop shaft is about 2" further forward that
a lycoming would be.

Joel

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Mike Davis · Post by **Mike Davis** » Fri Feb 17, 2012 4:52 pm

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To: <murphy-rebel@dcsol.com> (Murphy Rebel)
From: Bob Patterson <bob.patterson@canrem.com>
Subject: Re: Subaru conversions/cowlings
Message-Id: <E0ziUiH-0007MQ-00@mail2.toronto.istar.net>
Date: Tue, 24 Nov 1998 21:29:53 -0500

It MIGHT fit .... but, as I've said before, I'm no big fan of
that cowl. It will make it a lot harder to service the engine, and it
is very tight, making both the FIT, AND proper cooling an extra challenge !
(I know - the Subaru won't ever NEED service !!) ;-)

If you use the 912 cowl, everything might just fit right in,
with no mods needed (There's LOTS of room inside !) and there's already
a radiator mount that's proven. Of course, it's not all that easy to
work on the engine either...

The standard cowl, with the fiberglass nosebowl, with a 2"
strip of aluminum around the back, the side channels moved up almost
horizontal, and piano hinges top AND bottom is STILL the SLICKEST setup
for a fair bit of room, good cooling, AND <GREAT> EASE OF ACCESS !!
Much better for floats, because all the pieces stay attached to the
Rebel - with the "speed" (!?) cowl, you're left standing on a float
holding a HUGE 'sail' - the top cowl !! With the standard cowl WITH
TWO hinges, you pull 2 pins, and the top AND bottom open up for full,
easy access !

It shouldn't be too hard to adapt the standard cowl to the
extra length - the sides are just cut from sheet stock .... and you
can likely avoid buying that huge, expensive spinner !!

....bobp

Hey, Dave Bangle - what did you do for cowling for all the
different variations you've had ??? Might as well ask the expert !!

------------------------------orig.--------------------------
At 12:19 PM 11/24/98 -0500, you wrote:

So, the speed cowl was designed to be used with a prop shaft extention?
This sounds encouraging since my prop shaft is about 2" further forward

that

a lycoming would be.

Joel

-----Original Message-----
From: Bob Patterson <bob.patterson@canrem.com>
To: Murphy Rebel <murphy-rebel@dcsol.com>
Date: Tuesday, November 24, 1998 9:54 AM
Subject: Re: Subaru conversions/cowlings

No, yours is fine !! I was talking about the prop shaft extention,
the special exhaust system, and the huge spinner - expensive 'extra bits'

!

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Mike Davis · Post by **Mike Davis** » Fri Feb 17, 2012 4:52 pm

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The definition of an expert is "a has been drip under pressure". But for
what
it's worth I still have the molds for my cowl. Anyone interested in a cowl
let
me know and I will polish them up. I have a 2 piece and a 3 piece. The 3
piece
is prettier but the nose bowl is a bitch. Will be working on a new cowl for
mine
this next summer and will make a pretty 3 piece. The spinner hole is open
on
both of these cowls to allow a little air by the spinner. They were both
made
using the speed cowl to start with but are deeper on the bottom half and
will
allow for lots of length adjustment. Also are much better quality than the
old
cowls. Not sure about what they are building today. Can also do Kevlar or
carbon fiber or other special glass if you supply the cloth. Am using an
epoxy
resin with some fire retardant in it. Same stuff used by Stoddard Hamilton.
Let
me know. I could send pics if there are those of you who haven't seen the
shape. Reiner Hoffman says
"very sexy( imagine german accent)".

Dave

Bob Patterson wrote:

It MIGHT fit .... but, as I've said before, I'm no big fan of
that cowl. It will make it a lot harder to service the engine, and it
is very tight, making both the FIT, AND proper cooling an extra challenge

!

(I know - the Subaru won't ever NEED service !!) ;-)

If you use the 912 cowl, everything might just fit right in,
with no mods needed (There's LOTS of room inside !) and there's already
a radiator mount that's proven. Of course, it's not all that easy to
work on the engine either...

The standard cowl, with the fiberglass nosebowl, with a 2"
strip of aluminum around the back, the side channels moved up almost
horizontal, and piano hinges top AND bottom is STILL the SLICKEST setup
for a fair bit of room, good cooling, AND <GREAT> EASE OF ACCESS !!
Much better for floats, because all the pieces stay attached to the
Rebel - with the "speed" (!?) cowl, you're left standing on a float
holding a HUGE 'sail' - the top cowl !! With the standard cowl WITH
TWO hinges, you pull 2 pins, and the top AND bottom open up for full,
easy access !

It shouldn't be too hard to adapt the standard cowl to the
extra length - the sides are just cut from sheet stock .... and you
can likely avoid buying that huge, expensive spinner !!

....bobp

Hey, Dave Bangle - what did you do for cowling for all the
different variations you've had ??? Might as well ask the expert !!

------------------------------orig.--------------------------
At 12:19 PM 11/24/98 -0500, you wrote:
So, the speed cowl was designed to be used with a prop shaft extention?
This sounds encouraging since my prop shaft is about 2" further forward

that

a lycoming would be.

Joel

-----Original Message-----
From: Bob Patterson <bob.patterson@canrem.com>
To: Murphy Rebel <murphy-rebel@dcsol.com>
Date: Tuesday, November 24, 1998 9:54 AM
Subject: Re: Subaru conversions/cowlings

No, yours is fine !! I was talking about the prop shaft extention,
the special exhaust system, and the huge spinner - expensive 'extra

bits' !

Mike Davis · Post by **Mike Davis** » Fri Feb 17, 2012 4:52 pm

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From: "Morehouse, Daniel G" <DMorehouse@peacehealth.org>
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Subject: RE: Subaru conversions/cowlings
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Hey Dave!

I'll keep you in mind when I get to that point for my EJ22.

Dan
R280

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Subject: Re: Subaru conversions/cowlings

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Mike Davis · Post by **Mike Davis** » Fri Feb 17, 2012 4:52 pm

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Hi Bob

Now I see your point the prop extension cost $200 or something and so did
the
spinner but I do like the looks of it and it obviously helps the view over
the
nose according to a recent flight report if you recall.

Brian

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Mike Davis · Post by **Mike Davis** » Fri Feb 17, 2012 4:52 pm

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Hi Bob

Another point about the exhaust system. The one that I got for my Rebel,
does
it cost more than the standard system? I was not aware of this. I don't
believe that I asked for a special exhaust system because of the speed cowl
issue.

I was very pleased that the exhaust system fit just fine without any
modifications. Unlike Rob B's who ended up taking three shots at it before
he
got one to fit. That was a pain.

Brian

Mike Davis · Post by **Mike Davis** » Fri Feb 17, 2012 4:52 pm

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Subject: RE: Subaru conversions/cowlings
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Brian:

What exhaust system did you get? Was it from MAM? Are you using speed cowl
or regular? Firewall cut back? What engine are you using?

TimC
#438R

-----Original Message-----
From: RebelAir@aol.com [mailto:RebelAir@aol.com]
Sent: Friday, November 27, 1998 9:47 PM
To: murphy-rebel@dcsol.com
Subject: Re: Subaru conversions/cowlings

Hi Bob

Another point about the exhaust system. The one that I got for my Rebel,
does
it cost more than the standard system? I was not aware of this. I don't
believe that I asked for a special exhaust system because of the speed cowl
issue.

I was very pleased that the exhaust system fit just fine without any
modifications. Unlike Rob B's who ended up taking three shots at it before
he
got one to fit. That was a pain.

Brian

Mike Davis · Post by **Mike Davis** » Fri Feb 17, 2012 4:52 pm

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To: <murphy-rebel@dcsol.com> (Murphy Rebel)
From: Bob Patterson <bob.patterson@canrem.com>
Subject: RE: Subaru conversions/cowlings
Message-Id: <E0zkaZn-00042o-00@mail2.toronto.istar.net>
Date: Mon, 30 Nov 1998 16:09:47 -0500

<I> don't think it's a silly choice - but that's only me !! ;-)

I have the old metal cowl on my O-235 Rebel, and the mostly-
fibreglass and metal cowling on the wife's Rotax 912 Rebel. I have
also flown the 'speed cowl' Rebels from Florida to Toronto, and out
to the West Coast - long enough to develop a dislike for the awkward
access (not that the 912 cowl is much better ..., or for that matter,
the 'standard' metal cowl, but with a few changes, it can be WONDERFUL !!

You won't have any trouble with the metal cowling if you decide
to move the firewall later. It IS a big job to do after-the-fact, but
has been done. I really do like the metal cowl, especially done with
the extra hinge.

The standard cowl, with the fiberglass nosebowl, with a 2"
strip of aluminum around the back, the side channels moved up almost
horizontal, and piano hinges top AND bottom is STILL the SLICKEST setup
for a fair bit of room, good cooling, AND <GREAT> EASE OF ACCESS !!
Much better for floats, because all the pieces stay attached to the
Rebel - with the "speed" (!?) cowl, you're left standing on a float
holding a HUGE 'sail' - the top cowl !! With the standard cowl WITH
TWO hinges, you pull 2 pins, and the top AND bottom open up for full,
easy access !

There are Rebels flying with the O-320 without the trimmed
firewall - it does have an effect on CofG, but it HAS been done. I
would worry most about the longer arm on the engine causing problems
like we are seeing with the spring gear. As long as you use the heavier
corner wraps, the firewall stiffener, and the extra doublers described
in the 'floatfix', you should be ok .... Oh, yes, and a Warp Drive
prop instead of metal...

.....bobp

--------------------------------------orig.---------------------------
At 11:09 AM 11/30/98 -0800, you wrote:

BobP:

Hi.

I assume from this message string that you are using the metal hinged cowl,
with the fiberglass nosebowl, a-la early Rebel (Rotax, O-235). Correct?

This kind of leads me to another subject area. I have not really wanted to
cut back my firewall. I will be using an O-320 with a dynafocal mount. I
think the older style hinged cowling works better too, but, I want to be
sure that it won't cause problems if I end up having to cut the firewall
back.

My preference would be old-style cowling with no cut back firewall. Is

that

a silly choice?

TimC
#438R

-----Original Message-----
From: Bob Patterson [mailto:bob.patterson@canrem.com]
Sent: Wednesday, November 25, 1998 1:17 PM
To: Murphy Rebel
Subject: Re: Subaru conversions/cowlings

Thanks, Dave !!! I'm sure there will be a few takers !!!! This
could be a whole new market !! ....

.....bobp
--------------------------orig.--------------------------------------
At 05:19 AM 11/25/98 -0800, you wrote:
The definition of an expert is "a has been drip under pressure". But for
what
it's worth I still have the molds for my cowl. Anyone interested in a

cowl

let
me know and I will polish them up. I have a 2 piece and a 3 piece. The 3
piece
is prettier but the nose bowl is a bitch. Will be working on a new cowl
for mine
this next summer and will make a pretty 3 piece. The spinner hole is open
on
both of these cowls to allow a little air by the spinner. They were both
made
using the speed cowl to start with but are deeper on the bottom half and
will
allow for lots of length adjustment. Also are much better quality than

the

old
cowls. Not sure about what they are building today. Can also do Kevlar

or

carbon fiber or other special glass if you supply the cloth. Am using an
epoxy
resin with some fire retardant in it. Same stuff used by Stoddard
Hamilton. Let
me know. I could send pics if there are those of you who haven't seen the
shape. Reiner Hoffman says
"very sexy( imagine german accent)".

Dave

Bob Patterson wrote:

It MIGHT fit .... but, as I've said before, I'm no big fan of
that cowl. It will make it a lot harder to service the engine, and it
is very tight, making both the FIT, AND proper cooling an extra

challenge

!
(I know - the Subaru won't ever NEED service !!) ;-)

If you use the 912 cowl, everything might just fit right in,
with no mods needed (There's LOTS of room inside !) and there's already
a radiator mount that's proven. Of course, it's not all that easy to
work on the engine either...

The standard cowl, with the fiberglass nosebowl, with a 2"
strip of aluminum around the back, the side channels moved up almost
horizontal, and piano hinges top AND bottom is STILL the SLICKEST setup
for a fair bit of room, good cooling, AND <GREAT> EASE OF ACCESS !!
Much better for floats, because all the pieces stay attached to the
Rebel - with the "speed" (!?) cowl, you're left standing on a float
holding a HUGE 'sail' - the top cowl !! With the standard cowl WITH
TWO hinges, you pull 2 pins, and the top AND bottom open up for full,
easy access !

It shouldn't be too hard to adapt the standard cowl to the
extra length - the sides are just cut from sheet stock .... and you
can likely avoid buying that huge, expensive spinner !!

....bobp

Hey, Dave Bangle - what did you do for cowling for all the
different variations you've had ??? Might as well ask the expert !!

------------------------------orig.--------------------------
At 12:19 PM 11/24/98 -0500, you wrote:
that

extention,

bits' !

Mike Davis · Post by **Mike Davis** » Fri Feb 17, 2012 4:52 pm

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Hi Tim

I am using the stainless steel exhaust system as supplied by MAM. It is
from
a outfit in California on Chuch Yeager Way no less. If you are interested
in
the precise name, I can get it for you. My friend Sam was over the other
day
and he also got his stainless steel exhaust from MAM but it is quite
different
from mine. So I do not know what they will ship you. The differences are
marked.

I am using the speed cowl. Just finished it and it looks fine. No problems
it just took time like my things I tackle. Also using the 0320 ( as per
Sam
above who is also using the speed cowl), and I did cut the firewall back 3
inches. This seems to be a good idea considering how MAM has pushed the C
of
G back from an original forward limit of 7.7 inches to 12!. Also with the
issues of the strength of the front end in question by many and the fact
that
MAM is now considering it for all their aircraft makes it look warranted.

Happy Building

Brian #328R

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