The Murphy Builders Site

Digest of list: rebel-builders-d Total messages in digest: 13

1 Date : Sat, 18 Dec 2010 21:18:45 -0500
From : klehman@albedo.net
Subject: Re: [rebel-builders] engine mount

2 Date : Sat, 18 Dec 2010 21:40:58 -0500
From : oifa@irishfield.on.ca
Subject: Re: [rebel-builders] Dyanfocal engine mount "vent" holes

3 Date : Sat, 18 Dec 2010 21:52:59 -0500
From : oifa@irishfield.on.ca
Subject: Re: [rebel-builders] End of Season: Floats Off Wheels On

4 Date : Sat, 18 Dec 2010 19:29:23 -0800
From : elist@whidbey.com
Subject: RE: [rebel-builders] End of Season: Floats Off Wheels On

5 Date : Sat, 18 Dec 2010 22:31:50 -0500
From : oifa@irishfield.on.ca
Subject: Re: [rebel-builders] End of Season: Floats Off Wheels On

6 Date : Sat, 18 Dec 2010 23:46:39 -0400
From : daricker@ns.sympatico.ca
Subject: Re: [rebel-builders] Dyanfocal engine mount "vent" holes

7 Date : Sat, 18 Dec 2010 22:52:06 -0500
From : oifa@irishfield.on.ca
Subject: Re: [rebel-builders] Dyanfocal engine mount "vent" holes

8 Date : Sat, 18 Dec 2010 23:01:48 -0500
From : oifa@irishfield.on.ca
Subject: Re: [rebel-builders] Conical engine mount

9 Date : Sun, 19 Dec 2010 00:38:17 -0900
From : mikeh@dcsol.com
Subject: Dynafocal mount vent holes

10 Date : Sun, 19 Dec 2010 01:38:42 -0900
From : schaumr@dcsol.com
Subject: Re: [rebel-builders] engine mount

11 Date : Sun, 19 Dec 2010 17:24:27 +0100
From : marcvanhulzen@online.nl
Subject: RE: [rebel-builders] Conical engine mount

12 Date : Sun, 19 Dec 2010 11:33:01 -0500
From : oifa@irishfield.on.ca
Subject: Re: [rebel-builders] Conical engine mount

13 Date : Sun, 19 Dec 2010 09:18:09 -0800
From : walter.klatt@shaw.ca
Subject: RE: [rebel-builders] Conical engine mount


---------- Digest Message #1 ----------
Date: Sat, 18 Dec 2010 21:18:45 -0500
From: klehman@albedo.net
To: rebel-builders
Subject: Re: [rebel-builders] engine mount

Below is a comment I made 8/24/2010 during the last time this subject
came up.
Ken

"I dug up a MAM diagram for the 0-235 and I believe it is the same mount
for the 0-320. It shows one degree of right offset and zero down thrust.

However you might check to see if I put anything in the archives (as I
often do) about 8 years ago. Reason is because I measured a conical
mount and my less than perfect memory recalls 1 or 2 degrees of right
offset and 1 or 2 degrees of downthrust. I can't find anything
definitive in my notes. For low power cruise with the soob and wing
cuff, the down thrust and offset was a good thing to put in my mount
from what I've seen. However I would not hesitate to use 1 or 2 offset
and zero downthrust if I was building an 0-320 mount."

schaumr@dcsol.com wrote:

Hi All,

I am getting ready to have an engine mount built for my 6-cyl Corvair
engine.
It'll produce about 120hp, and weigh a bit less than an O-200 installed.
Virtually all Corvair mounts are bed mounts, and I've decided to have
William
Wynne (of flycorvair.com) weld it up for me. He has welded Corvair
mounts
for a number of othe aircraft, and I am looking for reference materials
to
provide to him: schematics (if possible), thrust lines, distances from
firewall
for CG, etc...

I am hoping someone has a schematic of a Rebel with an O-235 engine
install
(or even an O-320) to get a sense of the required dimensions.

Can anyone tell me if these documents exist?

Thanks in advance,
Rob

Hi Simon

That's about what I figured and I'm surprised that they were left open.
Perhaps that's a comment on process control?

From your experience is closing them a "must do"?

Cheers,

Dave


On 12/18/2010 11:20 AM, Simon Smith wrote:

Those are vent holes for the weld process and we usually close them
after
the mount is completely welded. Dick none of the 4 cyl. Lyc's have
detachable mounts. I hope this helps.
Si
Rebel N431SS& N572TA
----- Original Message -----
From: "David A. Ricker"<daricker@ns.sympatico.ca>
To:<rebel-builders@dcsol.com>
Sent: Saturday, December 18, 2010 8:22 AM
Subject: Re: [rebel-builders] Conical engine mount

Dick

I'm a bit confused by your description of the 4 cyl mount. I have just
received a mount (and a cowling, maybe more about that later) from MAM
for the Elite project, on the invoice it's listed as a Dynafocal mount
not Conical as I read your message to say. Am I understanding your
what
your wrote correctly?

Now, a question of my own, the mount we just received has a small
(about
1/16 - 1/8" dia) hole/gap in the weld between the support tubing and
the
ring which accepts the lord mount. The hole looks to be intentional as
it is there on all 4 rings, any thoughts as to the reason? FWIW, The
mount is powder coated.

Cheers,

Dave

PS. After ordering a cowling, engine mount and window rings in January
2010, they arrived this week.



On 12/17/2010 10:42 PM, Dick Wampach wrote: