The Murphy Builders Site

Only source for droop tips to fit the Rebel/Elite/Moose wing profile is
Murphy....or start carving foam to make your own plugs.

----- Original Message -----
From: "randy lillian" <rebel@nf.sympatico.ca>
To: <rebel-builders@dcsol.com>
Sent: Saturday, April 08, 2006 5:05 PM
Subject: [rebel-builders] droop tips

hello fellow rebel builders.my name is randy kit#r471i am looking for

drooptips if anybody knows of a source where i might purchase a set please
let me know

randy






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But why would you want them? Theory and testing seems to favour the
hoerner design.
Ken

Wayne G. O'Shea wrote:

Only source for droop tips to fit the Rebel/Elite/Moose wing profile is
Murphy....or start carving foam to make your own plugs.

hello fellow rebel builders.my name is randy kit#r471i am looking for

drooptips if anybody knows of a source where i might purchase a set please
let me know

randy

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Ken,

I could not find any comparison information charts on Droop Tips versus the Hoerner design fitted to any of the Murphy product line.

From your statement �Theory and testing seems to favour the hoerner design,� you must have some additional information, could you please share with us.

Thanks,
Jeff

----- Original Message -----
From: Ken <klehman@albedo.net>
Date: Saturday, April 8, 2006 5:20 pm
Subject: Re: [rebel-builders] droop tips

But why would you want them? Theory and testing seems to favour
the
hoerner design.
Ken

Wayne G. O'Shea wrote:

Only source for droop tips to fit the Rebel/Elite/Moose wing

profile is

Murphy....or start carving foam to make your own plugs.

hello fellow rebel builders.my name is randy kit#r471i am

looking for

drooptips if anybody knows of a source where i might purchase a

set please

let me know

randy

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Hi Jeff
You may be able to find some references in the archives but either avweb
or one of the aviation magazines did some detailed comparisons on a
Cessna which are online somewhere. Basically a hoerner tip feeds less
energy into the wintip vortices and is aerodynamically equivalent to
adding a foot of so of wingspan. As I recall the droop tip was arguably
better than the plain tip but the hoerner was a clear winner. Benefits
are small though if you prefer the droop look. Several folks here have
commented on their hoerner tips on a Rebel. Curt posted some
comparisions several years ago.
Ken

Jeff McMurrer wrote:

Ken,

I could not find any comparison information charts on Droop Tips versus the Hoerner design fitted to any of the Murphy product line.

From your statement �Theory and testing seems to favour the hoerner design,� you must have some additional information, could you please share with us.

Thanks,
Jeff

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This article by Chris Heintz about STOL design includes a good
explanation of the advantages of Hoerner tips:

http://zenithair.com/stolch801/design/design.html

As regular readers of this list know, good Hoerner tips for the Rebel
are made by Dave Fife, who can be reached via email at:

aircraftips@yahoo.com

Jeff McMurrer wrote:

Ken,

I could not find any comparison information charts on Droop Tips versus the Hoerner design fitted to any of the Murphy product line.

From your statement �Theory and testing seems to favour the hoerner design,� you must have some additional information, could you please share with us.

Thanks,
Jeff

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