The Murphy Builders Site

Posted: **Fri Feb 17, 2012 4:21 pm**

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Any thoughts on whether it is worth/necessary adding the
dorsal fin on the Rebel if flying on floats? What about on
wheels prior to going to floats?

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Posted: **Fri Feb 17, 2012 4:21 pm**

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To: <murphy-rebel@dcsol.com> (Murphy Rebel)
From: Murphy Aircraft Tech Department <murtech@murphyair.com >
Subject: Re: Dorsal Fin on Rebel
Date: Mon, 15 Jun 1998 12:48:52 -0700

At 08:51 PM 6/14/98 -0700, you wrote:

Any thoughts on whether it is worth/necessary adding the
dorsal fin on the Rebel if flying on floats? What about on
wheels prior to going to floats?

In talking to Robin the Dorsal Fin does little to the flight

characteristics of the A/C one way or the other.

Regards;
Dennis
Murphy Aircraft Mfg. Ltd.
Ph: 1-604-792-5855
Fax: 1-604-792-7006
e-mail: murtech@murphyir.com
Web Site: http://www.murphyair.com

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Posted: **Fri Feb 17, 2012 4:21 pm**

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To: <murphy-rebel@dcsol.com> (Murphy Rebel)
From: Bob Patterson <bob.patterson@canrem.com>
Subject: Re: Dorsal Fin on Rebel
Message-Id: <E0ym8xu-0001ih-00@mail2.toronto.istar.net>
Date: Tue, 16 Jun 1998 23:32:50 -0400

Walter,

Some people think the dorsal fin looks better - that's about it.
There
is no physical need for it...

It's like electric flaps, and control wheels .....

(Cessna did it, so it <must> be good !!) ;-)

....bobp

----------------------------------orig.------------------------------------
At 08:51 PM 6/14/98 -0700, you wrote:

Any thoughts on whether it is worth/necessary adding the
dorsal fin on the Rebel if flying on floats? What about on
wheels prior to going to floats?

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Posted: **Fri Feb 17, 2012 4:21 pm**

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Hmmm, I think I like the looks of the Rebel better without the dorsal fin
and
really don't need the extra weight. The only reason I would have for doing
it,
would be to aid longitudinal stability with floats. Bit of a shame, though,
for
me, as I have already built and painted it, and was just about to do the
final
riveting. You guys are really sure that it doesn't help float flying?

Bob Patterson wrote:

Walter,

Some people think the dorsal fin looks better - that's about it.

There

is no physical need for it...

It's like electric flaps, and control wheels .....

(Cessna did it, so it <must> be good !!) ;-)

....bobp

----------------------------------orig.-----------------------------------

-

At 08:51 PM 6/14/98 -0700, you wrote:
Any thoughts on whether it is worth/necessary adding the
dorsal fin on the Rebel if flying on floats? What about on
wheels prior to going to floats?

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Posted: **Fri Feb 17, 2012 4:21 pm**

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To: <murphy-rebel@dcsol.com> (Murphy Rebel)
From: Bob Patterson <bob.patterson@canrem.com>
Subject: Re: Dorsal Fin on Rebel
Message-Id: <E0ymR70-00028k-00@mail2.toronto.istar.net>
Date: Wed, 17 Jun 1998 18:55:26 -0400

I've only had my Rebel on amphibs since Aug./96, but I sure haven't
noticed any problems with directional stability.

OTOH, if you've already got it done - go ahead and put it on ! It
shouldn't hurt (other than the weight, and a small increase in
weathercocking tendencies).

There are several Rebels on floats near here WITH the dorsal fin,
and several WITHOUT - no problems either way .....

....bobp

---------------------------------------orig.-------------------------------
At 08:55 PM 6/16/98 -0700, you wrote:

Hmmm, I think I like the looks of the Rebel better without the dorsal fin

and

really don't need the extra weight. The only reason I would have for doing

it,

would be to aid longitudinal stability with floats. Bit of a shame, though,

for

me, as I have already built and painted it, and was just about to do the

final

riveting. You guys are really sure that it doesn't help float flying?

Bob Patterson wrote:

Walter,

Some people think the dorsal fin looks better - that's about it.

There

is no physical need for it...

It's like electric flaps, and control wheels .....

(Cessna did it, so it <must> be good !!) ;-)

....bobp

----------------------------------orig.----------------------------------

--

At 08:51 PM 6/14/98 -0700, you wrote:
Any thoughts on whether it is worth/necessary adding the
dorsal fin on the Rebel if flying on floats? What about on
wheels prior to going to floats?

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