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jimh474(at)embarqmail.com
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 Posted: Mon May 19, 2008 6:31 pm Post subject: FireFly Landing Gear |
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Y'all;
I just did a little country boy figgerin and seems to me, that if you used 1
inch .095 4130 which weighs .918 lbs per foot and 1inch 7075 aluminum weighs
.941 lbs to the foot there would be a wee bit of weight savings and a hell
of a lot better gear legs.
7075 is no where near being a spring, where heat treated 4130 is a spring if
heat treated to Rockwell 48 hardness.
You could save even more weight by making the top half out of 1 inch and the
bottom half out of 3/4 inch tubing which weighs .664 lbs to the foot.
The steel gear puts less stress on the cage than the stiff aluminum rod.
But if you enjoy bending aluminum and then straightening it all the time,
have fun.
Just an idea.
Jim Hauck
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jbhart(at)onlyinternet.ne
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| Posted: Tue May 20, 2008 4:39 am Post subject: FireFly Landing Gear |
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At 10:28 PM 5/19/08 -0400, you wrote:
Jim,
It is a good idea. I am caught with what I have and how to make the best of
it. If the cable system doesn't do the job I will be more inclined to going
with the steel. In eight years, I have had two incidents that ended with
bent legs. I have invested in two new aluminum legs that weigh two pounds
each, and a Harbor Freight floor press so that I can straighten legs. At my
age I believe I have all the legs I will need.
Jack B. Hart FF004
Winchester, IN
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customersupport(at)tnkolb
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| Posted: Tue May 20, 2008 6:41 am Post subject: FireFly Landing Gear |
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ROCKWELL 48 IS TO HARD.
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capedavis(at)yahoo.com
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| Posted: Tue May 20, 2008 6:48 am Post subject: FireFly Landing Gear |
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Jack , A little off subject ,but not really I am building a firefly and wonder about my weight and the Alum . gear legs . How much do you weigh? I weigh 210 and wonder about the alum.. gear legs ,maybe I should go for the steel legs I have 490 hrs in a KXP with a 503 the landing might be a little different as I wasn't disabled when I flew the Firestar as I am now. Thank you Chris Davis
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John Hauck
Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)
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| Posted: Tue May 20, 2008 4:55 pm Post subject: FireFly Landing Gear |
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---- KOLB AIRCRAFT <customersupport(at)tnkolbaircraft.com> wrote:
| Quote: |
ROCKWELL 48 IS TO HARD.
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RC 48 works for me. Been using it for 20+ years.
Today was a good test taking off from Soldiers Bar USFS dirt strip in the mountains of Idaho. Beat the crap out of my mkIII Hauck landing gear and legs. They survived the torture. 
Me too!
Weathered in at Ontario, Oregon, until probably tomorrow some time. Then on to Larry Cottrell's 100 miles southwest.
john h
mkIII
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_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama |
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jbhart(at)onlyinternet.ne
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| Posted: Tue May 20, 2008 5:56 pm Post subject: FireFly Landing Gear |
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Date: Tue, 20 May 2008 07:45:43 -0700 (PDT)
From: chris davis <capedavis(at)yahoo.com>
Jack , A little off subject ,but not really I am building a firefly and
wonder about my weight and the Alum . gear legs . How much do you weigh? I
weigh 210 and wonder about the alum.. gear legs ,maybe I should go for the
steel legs I have 490 hrs in a KXP with a 503 the landing might be a
little different as I wasn't disabled when I flew the Firestar as I am now.
................................................
Chris,
Currently, I weigh 177 pounds dry. I have lost 20 pounds in the last year
and a half. When I am suited up with avionics vest, cold weather gear, and
full fuel load, the FireFly is at or a little over gross weight of 500
pounds. If I am headed to a fly-in I carry at least another 20 pounds of
equipment in a luggage space behind the fuel tank.
You are welcome,
Jack B. Hart FF004
Winchester, IN
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jbhart(at)onlyinternet.ne
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| Posted: Wed May 21, 2008 4:52 am Post subject: FireFly Landing Gear |
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Date: Tue, 20 May 2008 07:45:43 -0700 (PDT)
From: chris davis <capedavis(at)yahoo.com>
Jack , A little off subject ,but not really I am building a firefly and
wonder about my weight and the Alum . gear legs . How much do you weigh? I
weigh 210 and wonder about the alum.. gear legs ,maybe I should go for the
steel legs I have 490 hrs in a KXP with a 503 the landing might be a
little different as I wasn't disabled when I flew the Firestar as I am now.
................................................
Chris,
Currently, I weigh 177 pounds dry. I have lost 20 pounds in the last year
and a half. When I am suited up with avionics vest, cold weather gear, and
full fuel load, the FireFly is at or a little over gross weight of 500
pounds. If I am headed to a fly-in I carry at least another 20 pounds of
equipment in a luggage space behind the fuel tank.
You are welcome,
Jack B. Hart FF004
Winchester, IN
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