Today's Message Index:
----------------------
1. 09:28 AM - weight and bal (boyd young)
2. 10:13 AM - Kolb Twinstar For Sale (KolbTwinstar@aol.com)
3. 11:06 AM - lift strut ends (steel fittings) (Ben Ransom)
4. 11:25 AM - lift strut ends (steel fittings) (Ben Ransom)
5. 01:20 PM - Re: lift strut ends (steel fittings) (John Cooley)
6. 03:29 PM - Re: lift strut ends (steel fittings) (Eugene Zimmerman)
7. 03:35 PM - Re: lift strut ends (steel fittings) (Richard Swiderski)
8. 04:34 PM - Re: lift strut ends (steel fittings) (ul15rhb@juno.com)
9. 05:26 PM - lift struts (Bob Bean)
Message 1
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--> Kolb-List message posted by: "boyd young" <by0ung@brigham.net>
. How many of you have used the Kolb forms in the blueprints ??
How many have used FAA form AC 43.13-1B ?? How many have tried both, and
how did it work out ??
i worked mine from the kolb forms and also the form used by my fbo.... both seem
to give the same results. a question , how the faa form changes the wing
cord from inches to % ? when in doubt just use the numbers in inches...
the plans show the cg limits in both % and inches.
boyd
Message 2
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| Subject: | Kolb Twinstar For Sale |
--> Kolb-List message posted by: KolbTwinstar@aol.com
Due to cutbacks at my job I'm forced to sell my Kolb.
Kolb aircraft N560TB
New Rotax 503CDI with a new ground adjustable Warp Prop
Paint (Poly Tone) is white with blue and black trim
Fly's Great!
Asking $14,950
I also have a 24ft. fully enclosed trailer with electric hoist I would sell
with it if needed. Plus kolb accessories.
Tracy Briggs
74 Gallop Lane
Wentzville Mo. 63385
314-258-1061
Message 3
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| Subject: | lift strut ends (steel fittings) |
--> Kolb-List message posted by: Ben Ransom <bwr000@yahoo.com>
Hi All,
Bad of me to be so absent from the list -- I guess the matronics weasel
toasted me for inactivity. I'm getting closer to flying, and am
heartened (in a backward kind or way) that I've still not been beat by
Lar. ;) From the looks of things, you will beat me tho!
Anyway, got a question... Way back when, I had botched drilling thru
the ends of streamlined lift struts into the steel fittings. I'm
changing over to just making a new pair of conventional per plans
liftstruts and will add foam core/glass fairnings to them "later". I
got some 4130 tube, same diameter and wall thickness as the Kolb
supplied fittings, and tried flattening the ends. I was unable to
flatten them without getting a crack on the outside edge (where the
tube diam bends the most from round to flat). Sooo, I'm figuring
either there is some other trick or perhaps even a different alloy, or,
perhaps Kolb just grinds off the part where the crack shows. Anybody
know?
Thanks,
-Ben Ransom
KXP rebuild 95%
=====
http://mae.ucdavis.edu/~ransom
http://search.yahoo.com
Message 4
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| Subject: | lift strut ends (steel fittings) |
--> Kolb-List message posted by: Ben Ransom <bwr000@yahoo.com>
I should add...
When I tried squashing the ends flat, I did so with a press, using
little blocks with rounded edges to avoid making a crease line where
the flattened part merges to the round part. It is obvious that
avoiding that crease is important, and my method was fine in this
regard. I tried twice, once at room temp, and the second with the tube
end barely heated (stopped at first indication of changing color, i.e.,
no red). Both ways I still get the crack along the edge. In ASCII, an
exageration of it looks like:
()
()
In this view the squashing would be side to side. Cracking is along
the outside (top and bottom in this view), and there is also a tendency
for the middle of the squashed area to go in first, as shown.
=====
http://mae.ucdavis.edu/~ransom
http://search.yahoo.com
Message 5
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| Subject: | Re: lift strut ends (steel fittings) |
--> Kolb-List message posted by: "John Cooley" <johnc@datasync.com>
Hey Ben,
Good to see your back. Don't make yourself so scarce from now on.
At one time you talked about making 4130 gear legs. Did you make the 4130
gear legs for the Firestar or go back with factory stuff?
Later,
John Cooley
"do not archive"
> --> Kolb-List message posted by: Ben Ransom <bwr000@yahoo.com>
>
> Hi All,
> Bad of me to be so absent from the list -- I guess the matronics weasel
> toasted me for inactivity. I'm getting closer to flying, and am
> heartened (in a backward kind or way) that I've still not been beat by
> Lar. ;) From the looks of things, you will beat me tho!
>
> Anyway, got a question... Way back when, I had botched drilling thru
> the ends of streamlined lift struts into the steel fittings. I'm
> changing over to just making a new pair of conventional per plans
> liftstruts and will add foam core/glass fairnings to them "later". I
> got some 4130 tube, same diameter and wall thickness as the Kolb
> supplied fittings, and tried flattening the ends. I was unable to
> flatten them without getting a crack on the outside edge (where the
> tube diam bends the most from round to flat). Sooo, I'm figuring
> either there is some other trick or perhaps even a different alloy, or,
> perhaps Kolb just grinds off the part where the crack shows. Anybody
> know?
> Thanks,
> -Ben Ransom
> KXP rebuild 95%
>
> =====
> http://mae.ucdavis.edu/~ransom
>
> http://search.yahoo.com
Message 6
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| Subject: | Re: lift strut ends (steel fittings) |
--> Kolb-List message posted by: Eugene Zimmerman <eugenezimmerman@dejazzd.com>
Ben Ransom wrote:
>
> --> Kolb-List message posted by: Ben Ransom <bwr000@yahoo.com>
>
> I should add...
> When I tried squashing the ends flat, I did so with a press, using
> little blocks with rounded edges to avoid making a crease line where
> the flattened part merges to the round part. It is obvious that
> avoiding that crease is important, and my method was fine in this
> regard. I tried twice, once at room temp, and the second with the tube
> end barely heated (stopped at first indication of changing color, i.e.,
> no red). Both ways I still get the crack along the edge. In ASCII, an
> exageration of it looks like:
>
> ()
> ()
>
> In this view the squashing would be side to side. Cracking is along
> the outside (top and bottom in this view), and there is also a tendency
> for the middle of the squashed area to go in first, as shown.
>
> =====
Welcome back Ben,
When I made my lift struts I flattened them as you did then rounded the
ends to shape by grinding off the corners then I welded the the whole
way around from one crack to the other, makes a nice strong rounded end
this way.
EZ
Message 7
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| Subject: | Re: lift strut ends (steel fittings) |
--> Kolb-List message posted by: "Richard Swiderski" <swiderski@advanced-connect.net>
Ben,
I would heart it bright red, squash it, check for cracking, then anneal
it by bringing it back to a dull orange, slowly back flame off of it, bury
it in sand, & let it completely cool. You should be good to go. Worst case
senario is you would have to reweld around all three sides & anneal it
again. ...Richard Swiderski
----- Original Message -----
From: "Ben Ransom" <bwr000@yahoo.com>
Subject: Kolb-List: lift strut ends (steel fittings)
> --> Kolb-List message posted by: Ben Ransom <bwr000@yahoo.com>
>
> I should add...
> When I tried squashing the ends flat, I did so with a press, using
> little blocks with rounded edges to avoid making a crease line where
> the flattened part merges to the round part. It is obvious that
> avoiding that crease is important, and my method was fine in this
> regard. I tried twice, once at room temp, and the second with the tube
> end barely heated (stopped at first indication of changing color, i.e.,
> no red). Both ways I still get the crack along the edge. In ASCII, an
> exageration of it looks like:
>
> ()
> ()
>
> In this view the squashing would be side to side. Cracking is along
> the outside (top and bottom in this view), and there is also a tendency
> for the middle of the squashed area to go in first, as shown.
>
> =====
> http://mae.ucdavis.edu/~ransom
>
> http://search.yahoo.com
>
>
Message 8
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| Subject: | Re: lift strut ends (steel fittings) |
--> Kolb-List message posted by: ul15rhb@juno.com
Hi Ben,
I haven't been around for awhile either and you got me out of my hole.
I made some streamlined struts to replace my old round ones and ordered
the end fittings from TNK. They were $20 apiece and thought the extra
money was worth it as my life hangs on those things.
Just a thought. Good to hear from you Ben.
Yes, I'm still actively flying the Firestar. I was up for 2 hours last
Saturday.
Ralph Burlingame
Original Firestar
On Thu, 17 Apr 2003 11:06:05 -0700 (PDT) Ben Ransom <bwr000@yahoo.com>
writes:
> --> Kolb-List message posted by: Ben Ransom <bwr000@yahoo.com>
>
> Hi All,
> Bad of me to be so absent from the list -- I guess the matronics
> weasel
> toasted me for inactivity. I'm getting closer to flying, and am
> heartened (in a backward kind or way) that I've still not been beat
> by
> Lar. ;) From the looks of things, you will beat me tho!
>
> Anyway, got a question... Way back when, I had botched drilling
> thru
> the ends of streamlined lift struts into the steel fittings. I'm
> changing over to just making a new pair of conventional per plans
> liftstruts and will add foam core/glass fairnings to them "later".
> I
> got some 4130 tube, same diameter and wall thickness as the Kolb
> supplied fittings, and tried flattening the ends. I was unable to
> flatten them without getting a crack on the outside edge (where the
> tube diam bends the most from round to flat). Sooo, I'm figuring
> either there is some other trick or perhaps even a different alloy,
> or,
> perhaps Kolb just grinds off the part where the crack shows.
> Anybody
> know?
> Thanks,
> -Ben Ransom
> KXP rebuild 95%
>
> =====
> http://mae.ucdavis.edu/~ransom
>
> http://search.yahoo.com
>
>
>
>
>
>
>
>
>
>
The best thing to hit the internet in years - Juno SpeedBand!
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Message 9
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--> Kolb-List message posted by: Bob Bean <slyck@frontiernet.net>
In the future when no longer in a hurry to get in the air I shall make my
own lift struts....these clunkers on mine are WAY too heavy. Time to
buy some streamline tubing and do some welding. -BB
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