Today's Message Index:
----------------------
1. 10:45 AM - Re: Pneumatic Squeezer (JohnCClarkVA@cs.com)
2. 11:59 AM - Re: Pneumatic Squeezer/Pneumatic Cleco Puller (Glenn Brasch)
3. 01:52 PM - rv-9a ground handling (Welch, Ivo)
4. 06:48 PM - Re: rv-9a ground handling (Gary)
Message 1
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| Subject: | Re: Pneumatic Squeezer |
--> RV9-List message posted by: JohnCClarkVA@cs.com
Brice, the pneumatic squeezer is great. I am 1/2 way through the metal work
on the fuselage. Lots of places to use - flaps, wings, ailerons, rudder,
stabs, frames, ribs, outer edges, spars, .... Makes fast work of dimples and
sets very nice, standard rivets. Just make sure you squeeze it when you mean
it and keep your fingers clear. You can hold the parts with one hand and use
the squeezer with the other. Can't do that with the manual one. I do use
the manual one every once in a while, in tight places. I use the longeron,
and 3 in. yokes and have the adjustable part. Would like to have the 4 in
no-hole. Next best toy is a pneumatic cleco puller (less than $80??). It
makes for fast work anywhere you have to pull or set more than 10-15 clecos.
I have the Avery model, but there is a less expensive one at the Yard Store
in Wichita (about $40??). It looks good and others think that the Yard model
is great.
Message 2
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| Subject: | Re: Pneumatic Squeezer/Pneumatic Cleco Puller |
--> RV9-List message posted by: "Glenn Brasch" <gbrasch@earthlink.net>
Regarding your comment about the Yard Store Pneumatic Cleco Puller, I got 3
defective ones from them, and they told me they were bad and pulling them
from their sales. That was over a month ago, so use caution. I ended up
with one from Spruce and it works great. Glenn in AZ. -9A Emp.
Do Not Archive
----- Original Message -----
From: <JohnCClarkVA@cs.com>
Subject: Re: RV9-List: Pneumatic Squeezer
> --> RV9-List message posted by: JohnCClarkVA@cs.com
>
> Brice, the pneumatic squeezer is great. I am 1/2 way through the metal
work
> on the fuselage. Lots of places to use - flaps, wings, ailerons, rudder,
> stabs, frames, ribs, outer edges, spars, .... Makes fast work of dimples
and
> sets very nice, standard rivets. Just make sure you squeeze it when you
mean
> it and keep your fingers clear. You can hold the parts with one hand and
use
> the squeezer with the other. Can't do that with the manual one. I do use
> the manual one every once in a while, in tight places. I use the
longeron,
> and 3 in. yokes and have the adjustable part. Would like to have the 4 in
> no-hole. Next best toy is a pneumatic cleco puller (less than $80??). It
> makes for fast work anywhere you have to pull or set more than 10-15
clecos.
> I have the Avery model, but there is a less expensive one at the Yard
Store
> in Wichita (about $40??). It looks good and others think that the Yard
model
> is great.
>
>
Message 3
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| Subject: | rv-9a ground handling |
--> RV9-List message posted by: "Welch, Ivo" <ivo.welch@yale.edu>
hi andy:
definitely keep the nosegear off the ground. the issue is left-right
stability,
not up-down stability. a fast driving car very much wants to go straight.
a
fast rolling airplane with two wheels on the ground has very little
left-right
stability. with the third wheel on the ground, it is a bit better...but the
third wheel is, for lack of a better word, too loose to provide much
straight
ahead stability. it really should IMHO.
I think the rest of your message is an interestin discussion about landings,
but
not what I would like to improve (left-right control). I find that at 60mph
IAS
on final, the plane becomes very difficult to control. it is more stable at
80mph. Curious what others are flying. Idle speed on my prop is relatively
high, because it is a catto prop (for now). it does not have enough inertia
to
keep the engine running at 500rpm. I cannot go less than 700rpm.
The one thing I need to do is to check the nosewheel breakout force. Maybe
I
want it even higher than the standard 20lbs. I really want my nosewheel to
induce the plane to head straight. I am not the builder, so I need to get a
hold of my mechanic.
regards,
/iaw
Message 4
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| Subject: | Re: rv-9a ground handling |
--> RV9-List message posted by: "Gary" <rv9er@3rivers.net>
Ivo.......I think Andy was right on with his comments. I have not flown my -9A
yet, but have 35 hours in an RV-4. Even in the -4, I could use 65 mph on final
with two adults on a 95 degree day at a 3700 ft elevation airport, and make
good landings. You could fly that -4 around at altitude in the same conditions
indicating 55 mph, with good control response in all axes.
What I hear Andy saying is, slow landings are easier to control. Are you pushing
the nosewheel down at speed? (DON'T.) What is your speed at touchdown?
Unless we are talking monster crosswinds here, it is the TAIL that provides
yaw stability down to very slow speeds, not the nosewheel. Reading reports
of -9A ground handling, the brakes are not needed to steer above a very slow speed,
which means the rudder is very effective.
The reason nosedraggers are more directionally stable is that the MAINS are further
back, behind the CG, not because the nosewheel (ahead of the CG) makes them
stable.
If the thing just wants to veer off to the side when rolling along undisturbed,
either you have a brake dragging, or something must be wrong with the main gear
alignment. If so, yours is the first I've heard of.
I would check the nosewheel breakout force, and set it appropriately, but that
should only effect its tendency to shimmy.
How about getting an experienced RV'er to fly it and see what he thinks?
On the idle speed, you can set it down so it idles slower on final, and then open
the throttle slightly to make it idle where you want on the ground, taxiing,
etc.
Gary
----- Original Message -----
From: Welch, Ivo
To: rv9-list@matronics.com
Sent: Saturday, March 29, 2003 2:49 PM
Subject: RV9-List: rv-9a ground handling
--> RV9-List message posted by: "Welch, Ivo" <ivo.welch@yale.edu>
hi andy:
definitely keep the nosegear off the ground. the issue is left-right
stability,
not up-down stability. a fast driving car very much wants to go straight.
a
fast rolling airplane with two wheels on the ground has very little
left-right
stability. with the third wheel on the ground, it is a bit better...but the
third wheel is, for lack of a better word, too loose to provide much
straight
ahead stability. it really should IMHO.
I think the rest of your message is an interestin discussion about landings,
but
not what I would like to improve (left-right control). I find that at 60mph
IAS
on final, the plane becomes very difficult to control. it is more stable at
80mph. Curious what others are flying. Idle speed on my prop is relatively
high, because it is a catto prop (for now). it does not have enough inertia
to
keep the engine running at 500rpm. I cannot go less than 700rpm.
The one thing I need to do is to check the nosewheel breakout force. Maybe
I
want it even higher than the standard 20lbs. I really want my nosewheel to
induce the plane to head straight. I am not the builder, so I need to get a
hold of my mechanic.
regards,
/iaw
---
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