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Author Topic: Ares trailing edge  (Read 1573 times)

Offline Paul Smith

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Ares trailing edge
« on: December 08, 2006, 01:45:43 PM »
Comparing the Ambroid and Brodak Ares.

I happened to notice an old Ambroid Ares (built) and a kit of same at a friend's house.  I was allowed to take these specimens into my weapons lab for further study.

The other day, I saw a Brodak Ares plan. 

The glaring difference is that the Ambroid design has a straight trailing edge.  the Brodak as a significant forward-sweep to the TE, with the resultant "bent" hinge line.

Any thoughts vis-a-vis the difference?

« Last Edit: December 08, 2006, 03:26:55 PM by ama21835 »
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Offline Ron King

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Re: Ares trailing edge
« Reply #1 on: December 08, 2006, 03:01:38 PM »
I split this post off the other Ares topic so it would have more visibility.

IIRC, my Ambroid version also had a swept TE. We had to bend the flap horn a little and just lived with the slight alignment problem.

Based on my videos and plans, Bill's originals also had a swept TE.

Ron
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Offline RC Storick

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Re: Ares trailing edge
« Reply #2 on: December 08, 2006, 03:18:24 PM »
The TE is swept 1 inch on the original ARES and is no hinge line problem if you sand the TE square with the fuse center line. It takes about a 2 inch flat to do so. Then bend horn legs to 90 degrees to the TE. Problem solved. Works perfect.
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Offline Paul Smith

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Re: Ares trailing edge
« Reply #3 on: December 08, 2006, 03:31:25 PM »
I took another look:

The Brodak plan is swept forward 6 degrees.

The Ambroid plan is swept forward 2 degrees.

The green airplane's trailing edge  is STRAIGHT.  It appears that the assembler achieved this by sweeping the LE a bit more.  As a result, the spars intersect the LE a bit farther forward than design intent.

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Offline RC Storick

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Re: Ares trailing edge
« Reply #4 on: December 08, 2006, 03:49:25 PM »
Here is my Ares the TE is swept forward 1 inch each side.
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Offline Paul Smith

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Re: Ares trailing edge
« Reply #5 on: December 09, 2006, 06:45:46 AM »
Right you are... You can see the sweep in your photo.

Also the straightness is evident in the "old green plane".

This was to be a "patch-job" , but further review determined that the covering is completely "crystalized", calling for a total strip-down and recovering.  Coupled with a new fuel tank and the non-standard wing, it make never be fixed.
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Offline Randy Powell

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Re: Ares trailing edge
« Reply #6 on: December 09, 2006, 11:26:32 AM »
when I do a swept forward trailing edge (and I've done quite a few), I do as Robert notes and sand a flat spot on the where the flap horn goes, but I don't bend the horn at all. Even with the 10 degree sweep I used on a high aspect job I built. I use "lucky boxes" as Al Rabe has detailed. They work pretty well and I still have very free controls.
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