The Murphy Builders Site

Walter:

When I select flaps in the air or on the ground I can only pull the
flap handle so much before there is resistance. If the problem was in
the cable I should be able to take it out by selecting more flap with
the handle? Right?

Peter


On 18-Nov-04, at 7:42 AM, Walter Klatt wrote:

[quote]Peter, I used to run a Warp on my 0320 Rebel, and on wheels, had
it pitched to spin 2350 on take-off. Can't remember the exact
degrees, but definitely less that 13, and somewhere around 11 if
I remember correctly.

There is a lot of flex in the Rebel flap cable mechanism, so you
will always get much less in the air.

Walter

[quote]-----Original Message-----
From: mike.davis@dcsol.com
[mailto:mike.davis@dcsol.com]On Behalf Of
Peter, Juliet, & Wanaao Piascik
Sent: Wednesday, November 17, 2004 10:23 PM
To: rebel-builders@dcsol.com
Subject: Re: Skis on a Rebel


Thanks for the replies guys.

There was ice frozen on the bottom of the skis before
I left the
airport. I tried to remove this ice with a scraper.
The lake I was landing on had some spots of overflow,
but not much.

The wheels are about 1" below the skis.

I have a warp drive prop set at 13

Consider that there is only about 13/16" of travel on the fwd end of the
mixer arm to travel from zero to full flaps. Any loss due to flex will show
as a very significant loss of flap deflection. IF you're cable is only
pegged at the handle and at the mixer the air load pressurizing the cable
within the teleflex casing will make the casing bow from it's static
position. If you take a loose teleflex cable and hold it straight and then
take the same cable and bend it you will see that there won't be as much
cable sticking out the case ends. Since the case ends are mounted solidly in
place in the fuselage this means when air loads try to move the mixer arm
the cable forces deflect the casing and inturn change the static postion to
something else in flight conditions.

Things that can be done to help are attaching the teleflex cable with tube
clamps anywhere you can to stop it from moving around. Make sure there is no
slop in the attach pins/clevis' etc. No matter what system you have you
still have to deal with control horn flexing, rod end slop, cantilever
attach bolt flex etc.

Go with which ever system works for you and make sure you have all the slop
you can out of the system. One way of looking at the factory set up is that
you have auto deploying flaps. Pull them on "full" at 70MPH and as you slow
down coming in on final...... when you get her slowed to 40MPH in the flare
they will be down all the way!

Wayne

----- Original Message -----
From: "Peter, Juliet, & Wanaao Piascik" <northofsixty@mac.com>
To: <rebel-builders@dcsol.com>
Sent: Tuesday, November 23, 2004 11:29 AM
Subject: Conventional flaps on a Rebel


[quote]Walter:

When I select flaps in the air or on the ground I can only pull the
flap handle so much before there is resistance. If the problem was in
the cable I should be able to take it out by selecting more flap with
the handle? Right?

Peter


On 18-Nov-04, at 7:42 AM, Walter Klatt wrote:

[quote]Peter, I used to run a Warp on my 0320 Rebel, and on wheels, had
it pitched to spin 2350 on take-off. Can't remember the exact
degrees, but definitely less that 13, and somewhere around 11 if
I remember correctly.

There is a lot of flex in the Rebel flap cable mechanism, so you
will always get much less in the air.

Walter

[quote]-----Original Message-----
From: mike.davis@dcsol.com
[mailto:mike.davis@dcsol.com]On Behalf Of
Peter, Juliet, & Wanaao Piascik
Sent: Wednesday, November 17, 2004 10:23 PM
To: rebel-builders@dcsol.com
Subject: Re: Skis on a Rebel


Thanks for the replies guys.

There was ice frozen on the bottom of the skis before
I left the
airport. I tried to remove this ice with a scraper.
The lake I was landing on had some spots of overflow,
but not much.

The wheels are about 1" below the skis.

I have a warp drive prop set at 13

As you can see, Peter, you are going to get different opinions on thi
s subject, and as I think Wayne says, each to his own. There is no
question that the stock flaperon mechanism has a lot of slop in it and yo
u will never get a lot of real flap in flight. So if that is a problem
for you, then you will have to make mods either with electric or other
as has been described.

For me, I am quite happy with the stock set-up. When landing I usuall
y only use half-flap anyway. It's take-off that I always use full fla
p, and on water, I have found that really makes a difference. So it
seems that despite the slop, I still get what I need out of the flaps.


I did do one thing with mine, that takes out some of the slop due to th
e cable on full flap. I set the full flap position so that my mixer arm
is tight on the bottom with full flap, to take out the cable slop and
maximize the amount of flap in that position.

As for the resistance, you will get that in the air at higher speeds,
which again is one of the reasons, I normally just pull half flaps.
But if I slow to below 70, I can pull full flaps in the air, and some
times do that for a glassy water landing. And Bob P mentioned how you c
an change your handle shape to help that.

Walter

----- Original Message -----
From: "Peter, Juliet, & Wanaao Piascik" <northofsixty@mac
.com>
Date: Tuesday, November 23, 2004 8:29 am
Subject: Conventional flaps on a Rebel

Walter:

When I select flaps in the air or on the ground I can only pull

the

flap handle so much before there is resistance. If the problem was

in

the cable I should be able to take it out by selecting more flap

with

the handle? Right?

Peter

On 18-Nov-04, at 7:42 AM, Walter Klatt wrote:

Peter, I used to run a Warp on my 0320 Rebel, and on wheels,

had

it pitched to spin 2350 on take-off. Can't remember the exact

degrees, but definitely less that 13, and somewhere around 11

if

I remember correctly.

There is a lot of flex in the Rebel flap cable mechanism, so yo

u

will always get much less in the air.

Walter

-----Original Message-----
From: mike.davis@dcsol.com
[mike.davis@dcsol.com]On Behalf Of
Peter, Juliet, & Wanaao Piascik
Sent: Wednesday, November 17, 2004 10:23 PM
To: rebel-builders@dcsol.com
Subject: Re: Skis on a Rebel


Thanks for the replies guys.

There was ice frozen on the bottom of the skis before
I left the
airport. I tried to remove this ice with a scraper.
The lake I was landing on had some spots of overflow,
but not much.

The wheels are about 1" below the skis.

I have a warp drive prop set at 13