Today's Message Index:
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1. 05:42 AM - Control pressure (Oscar Zuniga)
2. 05:56 AM - Re: Control pressure (Phillips, Jack)
3. 07:37 PM - Re: Model A plans (BScott116@aol.com)
4. 07:39 PM - Funk engines (BScott116@aol.com)
Message 1
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| Subject: | Control pressure |
I have elevator trim control on 41CC but have never used it. Well, let me change
that statement a bit: the trim system uses a bungee to apply pull to the elevator
bellcrank behind the seat and the trim adjustment consists of pulling on
a cord under the seat to change the tension. There is a series of knots in
the cord and a slot in the hole in front of the seat to allow the knot to be dropped
into the slot when the desired trim is reached. After the initial setup
that put "some" tension on the bungee, I've never had to adjust it in flight
so I guess you could say it simply applied some "pre-load".
My experience in flight has been the same as others have found: when the 16 gal.
tank in the nose is full, the nose feels heavier and will drop faster if the
stick is let go. Midrange is the sweet spot and when the last few gallons remain,
slight forward pressure is needed in cruise but it's hardly noticeable.
I weigh right at 150 lbs. most days.
Oscar Zuniga
San Antonio, TX
mailto: taildrags@hotmail.com
website at http://www.flysquirrel.net
Message 2
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| Subject: | Control pressure |
I can speak to the other configuration, with the fuel in a centersection
tank. I have a trim control using springs to apply pressure to the
elevator bellcrank and I rarely ever touch it, once set. The only time I
have to adjust the trim is when I pack a heavy load into the baggage
compartment (between the firewall and the front cockpit, where most
people put the fuel tank).
I did find that when I applied gap seals to the elevators (duct tape),
the trim changed. I used to have to carry more nosedown trim. Now with
the gaps sealed, I have the trim almost full nose up.
Jack Phillips
Enjoying the perfect Pietenpol weather we've had the last few weeks in
Raleigh
-----Original Message-----
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Oscar
Zuniga
Sent: Wednesday, October 17, 2007 8:42 AM
Subject: Pietenpol-List: Control pressure
--> <taildrags@hotmail.com>
I have elevator trim control on 41CC but have never used it. Well, let
me change that statement a bit: the trim system uses a bungee to apply
pull to the elevator bellcrank behind the seat and the trim adjustment
consists of pulling on a cord under the seat to change the tension.
There is a series of knots in the cord and a slot in the hole in front
of the seat to allow the knot to be dropped into the slot when the
desired trim is reached. After the initial setup that put "some"
tension on the bungee, I've never had to adjust it in flight so I guess
you could say it simply applied some "pre-load".
My experience in flight has been the same as others have found: when the
16 gal. tank in the nose is full, the nose feels heavier and will drop
faster if the stick is let go. Midrange is the sweet spot and when the
last few gallons remain, slight forward pressure is needed in cruise but
it's hardly noticeable. I weigh right at 150 lbs. most days.
Oscar Zuniga
San Antonio, TX
mailto: taildrags@hotmail.com
website at http://www.flysquirrel.net
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Message 3
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| Subject: | Re: Model A plans |
Lowell Frank has done the funk engine. You would have to get the info from
him. I have asked him to make some written plans, no luck.
Message 4
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Great engine -- about 65 HP . Uses inserts and oil line rerouting to lube the
drilled crank. Has to be the late counterbalanced crank. Lowell frank is
now building a fuel injectd system for this engine.
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