Today's Message Index:
----------------------
1. 07:48 AM - Re: Trombone bungee trim (Jeff Boatright)
2. 03:30 PM - Re: A Great Film Showing Grassroots Aviation (Charles N. Campbell)
3. 03:41 PM - Re: Rib stitching question (Charles N. Campbell)
4. 04:30 PM - Re: Trombone bungee trim (taildrags)
5. 04:46 PM - Saturday flight (taildrags)
6. 06:16 PM - Re: Ray Allen electric trim servo (Chris Rusch)
7. 07:53 PM - Re: Trombone bungee trim (Jeff Boatright)
Message 1
INDEX | Back to Main INDEX |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Trombone bungee trim |
Sorry, I was having trouble interacting with the Matronics site last night. Here's
the original message that the photos above are a follow-up to:
I have a new movie up in which I'm testing a trim system comprised of a bungee
cord and a clothesline tightener:
https://www.youtube.com/watch?v=xfUMSuEMEwc
The movie doesn't show the trim system (I will post pictures later if it really
works out). What the movie shows is that the system will hold my Piet right at
55 mph from abeam the numbers to roll out, with no input from me (other than
a short shot of throttle to clear the fence!). This was a good thing because
the sun was in my eyes and I had very little sight down the runway. The trim system
was sort of "land-o-matic"
So, my Piet is fairly easily trimmed for downwind-base-final-landing.
I played around with it at altitude, and even if I don't use the tightener "valve"
to release the bungee, I can still power up as though to do a go round. It
does require a hefty amount of forward pressure to overcome the bungee, though.
Obviously the idea is to pull the tightener valve to relieve bungee tension
when it's not needed.
I also used the system to play around in slow flight, and spent some time doing
30 degree banked lazy eights and 360s at 45-50 mph. Rock steady (though this
was in the evening, so there were no up/downdrafts and little wind).
The tightener was cheap (under $5 from Ace Hardware) and looks like this:
http://farm8.staticflickr.com/7131/7559033132_e9231e5594.jpg
Imagine the line on the left being a bungee cord hooking to the rear of the control
stick torque tube. On the right, the tightener U-ring is attached to the
control stick just below the control stick hand grip instead of to the eyebolt
in the photo. If you want to trim for "up", pull the bungee cord that sticks
out of the tightener valve. This stretches the bungee and locks it into that length.
The bungee tension holds the stick back. If you want to release that trim,
pull on the valve (it's mouth is shaped like a trumpet or trombone bell).
It's clunky to use right now, so I may optimize it a bit. However, even as it is,
it's meets my main goal of trimming for the pattern.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=433216#433216
Message 2
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: A Great Film Showing Grassroots Aviation |
I just returned from Corvair College #31 in Barnwell where the video was
made last year. I ran my Corvair engine for the first time Saturday
morning. Unless you have experienced the thrill of seeing and hearing the
engine that you built up with your bare hands you just can't imagine what
it felt like when William pushed the starter button the first time and the
engine roared to life. What a thrill. Tears came to my eyes -- I couldn't
help it. Everyone should build up an engine even if you are never going to
fly behind it. It's an experience you will never forget. Chuck
On Thu, Nov 6, 2014 at 4:57 PM, jarheadpilot82 <jarheadpilot82@hotmail.com>
wrote:
> jarheadpilot82@hotmail.com>
>
> The EAA just posted the following short video on YouTube -
>
> http://youtu.be/wvXAX0C2q5c
>
> It is a short video based on a longer video that was released to all EAA
> chapters this morning. It is a video by Brady Lane highlighting Corvair
> College last November in Barnwell SC. Hats off to our very own P.F. Beck
> and his team for hosting the Corvair College. They do an awesome job
> supporting everyone. The EAA felt strong enough that this is a great
> example of grassroots aviation that they made the film and seni it out.
>
> Seeing some of our very own, like P.F., Dick Navratil and Bob Dewenter is
> great, but seeing the camaraderie of the builders is the story. Seeing a
> grandson and his grandfather hug as they watch their engine run on the test
> stand is just not to be missed. No matter what aircraft you are building or
> what engine you are using, if this video doesn't motivate you, then as they
> say, "you just ain't right!"
>
> --------
> Semper Fi,
>
> Terry Hand
> Athens, GA
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=433007#433007
>
>
Message 3
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Rib stitching question |
Jim, I was thinking the same thing. I am considering gluing the fabric to
the ribs before tautening and rib stitching. What says the experts who
have already been down this road? Chuck
On Fri, Nov 7, 2014 at 7:27 AM, Jim Markle <jim_markle@mindspring.com>
wrote:
> jim_markle@mindspring.com>
>
> 2 1/2" spacing pulls the fabric up against the ribs in the under camber
> area on the bottom of the wing. 3 1/2" spacing leaves a little gap between
> stitches. Is it worth making that area 2 1/2" spacing to avoid that gap?
>
> Sent from my smartphone.
>
>
Message 4
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Trombone bungee trim |
Well, it's simple alright! Seeing your handheld and radio stuff in the cockpit
reminds me of what a pain mine is. I've got to do something different, because
it's driving me nuts. Mine is a little Icom IC-A23 and what I do is clip it
to the map holder down by my right calf using the belt clip on the back of the
battery case. Well, that's fine until I pull the radio out to change frequencies.
If I'm not real careful, the battery case snaps off and my radio is dead.
Then I get to do the stick-between-my-knees shuffle, pull off one or both
gloves and hope they don't fly out, fumble around for the battery and clip,
get everything back together, power up the radio, and then pull the airplane out
of a screaming, diving left corkscrew spiral ;o) I've got to find my Bill
Rewey "handy details" and bend up one of his radio brackets to hold it up where
I can see it and get to the buttons easier.
--------
Oscar Zuniga
Medford, OR
Air Camper NX41CC "Scout"
A75 power
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=433229#433229
Message 5
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
The Air Camper worked its magic for me again yesterday. We've had some gray and
drizzly mornings lately, but it usually breaks up after lunch and we get a couple
of hours of sunshine. Gambling on that happening, I went out to the hangar
after lunch and prepared for flight. As I was preflighting, the sky was clearing
and by the time I was ready to roll the airplane out, it was beautiful
with calm winds and almost no traffic.
I had been correcting the camber on my axles, because it had been uneven from one side to the other and I had used washers to shim the axles out rather than the proper tapered shims. There are a couple of pictures of the shimming here: http://www.flysquirrel.net/piets/axle.html . I also replaced a tire and tube on one side, but everything was done and the airplane was ready to fly. So was I!
Interesting little 'chat' with the ground controller, as he said my call sign was
incorrect. "November Xray Four One Charlie Charlie", I repeated. "One Charlie
Charlie, Is that what's painted on your tail?" he asks. "Four One Charlie
Charlie, roger." That ended that little discussion, but I bet he went to find
out about that NX- tail number.
Beautiful day, smooth flight, on runup the RPM drop was textbook perfect on carb
heat and both mags, and off we went. I've finally started listening to you
pilots who suggest just letting it fly itself off. I'd always been taught to
hold forward stick to bring the tail up, hold it, then rotate when the airspeed
was good. Nahh... there is no need. Scout needs considerable forward stick
force to pick up the tail early, so yesterday instead of forcing it, I just
tried letting it do what it wanted and that worked great. We lifted off and climbed
out like the airplane knew what it was doing.
A very nice bit of sightseeing in the autumn air with autumn colors everywhere,
then some power on and power off stalls (non events), then back to the field.
I must say that the landing was the best that I have made in a very, very long
time. One of those where you roll out from base to final with the runway centerline
stripes just falling in perfect alignment with the center of the prop
and then not budging. Down the glideslope with out even stirring the stick,
down into ground effect, ease the stick back... back... back- and I was down
without even knowing when it happened.
This is why we fly Piets.
--------
Oscar Zuniga
Medford, OR
Air Camper NX41CC "Scout"
A75 power
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=433230#433230
Message 6
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Ray Allen electric trim servo |
Jack, we are on the same page, I did mine exactly like yours...
--------
NX321LR
Now test flying!!
Mitsubishi Powered
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=433233#433233
Attachments:
http://forums.matronics.com//files/image_475.jpg
Message 7
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Trombone bungee trim |
taildrags wrote:
> Well, it's simple alright! Seeing your handheld and radio stuff in the cockpit
reminds me of what a pain mine is. I've got to do something different, because
it's driving me nuts. Mine is a little Icom IC-A23 and what I do is clip
it to the map holder down by my right calf using the belt clip on the back of
the battery case. Well, that's fine until I pull the radio out to change frequencies.
If I'm not real careful, the battery case snaps off and my radio is
dead. Then I get to do the stick-between-my-knees shuffle, pull off one or both
gloves and hope they don't fly out, fumble around for the battery and clip,
get everything back together, power up the radio, and then pull the airplane
out of a screaming, diving left corkscrew spiral ;o) I've got to find my Bill
Rewey "handy details" and bend up one of his radio brackets to hold it up where
I can see it and get to the buttons easier.
I use Ram cell phone mounts. Not the cheapest, but I find they are versitile and
do not fail.
Put several more landings in yesterday and today using the very simple trim system.
About a dozen so far since installation. Rock solid at 55 mph from downwind
to base to final to landing. No doubt such a Rube Goldberg solution is not
to everyone's taste, but works for me. If problems arise I'll let you all know.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=433234#433234
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|