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From: "Alister Yeoman" <yeoman@voyager.co.nz>
To: "Rebel" <murphy-rebel@dcsol.com>
Subject: Rebel aileron trim
Date: Thu, 11 Feb 1999 11:12:25 +1300
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There was a bit of talk on this forum about a bungee type trim for the
rebel to counter aircraft loading aileron trim changes, I had a go at it.

I have an aileron trim tab, so I set it so that when flying solo the
aircraft flew hands off, the reason being so that as the aircraft is loaded
it would tend to go only one way.i.e. to the right.

On the push/pull aileron rod on the left hand side of the pilots seat at
the rear, I riveted on a small right angle bracket so it stands up with a
hole drilled into it. Into this can slip a small clip with some light
bungee cord attached.

On the top inner corner of the door sill I have an additional right angle
piece of right angle that protects the door sill and edges off the carpet.
Into this on the inside, I drilled 1/8" holes 1" apart starting from a few
inches behind the door post, backwards about 12".

On the front end of the bungee cord is a small piece of aluminum attached
to a 1/8" blot with a little knob on it.

The idea is, this can be kept in the pocket behind the seat for local
flying, but for cross countries, this can be pulled out and clipped on in a
few seconds. The holes on the doorsill are the adjustment, it is very easy
to add a little more tension, you simply grab hold of the knob, slid the
end of the bolt out of the hole and move to the next one. I made sure I
tested out over the whole range so that I still had full control movements.

I flight tested it and it works really well, in fact because it is out of
the way below seat level it is inconspicuous , I may just leave it in all
the time.

Alister





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To: <murphy-rebel@dcsol.com> (Murphy Rebel)
From: Bob Patterson <bob.patterson@canrem.com>
Subject: Re: Rebel aileron trim
Message-Id: <E10Am2x-0004fr-00@mail2.toronto.istar.net>
Date: Wed, 10 Feb 1999 21:40:07 -0500


Sure sounds like a prettier solution than mine !!! I did have
aileron tabs, but they scared me silly - they are just at eye level,
and I figured it was just a matter of time until someone got a nasty
slash in the eye from them !!!

I drilled out the rivets & removed them at the first opportunity -
it seems they weren't very effective anyway !!

Not sure about the row of holes - perhaps a short pip-pin would
make a nice handle, with locking capability ....

I had in mind something with a tube & slider - but your idea
works - AND it's easily removable ! A big plus, in my book.

Thanks for sharing the idea.
.....bobp
-------------------------------orig.---------------------------
At 11:12 AM 2/11/99 +1300, you wrote:

There was a bit of talk on this forum about a bungee type trim for the
rebel to counter aircraft loading aileron trim changes, I had a go at it.

I have an aileron trim tab, so I set it so that when flying solo the
aircraft flew hands off, the reason being so that as the aircraft is loaded
it would tend to go only one way.i.e. to the right.

On the push/pull aileron rod on the left hand side of the pilots seat at
the rear, I riveted on a small right angle bracket so it stands up with a
hole drilled into it. Into this can slip a small clip with some light
bungee cord attached.

On the top inner corner of the door sill I have an additional right angle
piece of right angle that protects the door sill and edges off the carpet.
Into this on the inside, I drilled 1/8" holes 1" apart starting from a few
inches behind the door post, backwards about 12".

On the front end of the bungee cord is a small piece of aluminum attached
to a 1/8" blot with a little knob on it.

The idea is, this can be kept in the pocket behind the seat for local
flying, but for cross countries, this can be pulled out and clipped on in a
few seconds. The holes on the doorsill are the adjustment, it is very easy
to add a little more tension, you simply grab hold of the knob, slid the
end of the bolt out of the hole and move to the next one. I made sure I
tested out over the whole range so that I still had full control movements.

I flight tested it and it works really well, in fact because it is out of
the way below seat level it is inconspicuous , I may just leave it in all
the time.

Alister

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