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GeoB
Joined: 16 Jun 2009
Posts: 207
Location: Fresno, CA
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 Posted: Mon Mar 31, 2014 11:41 am Post subject: Bent gear leg question.. |
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| Quote: | using some blocks then taking a strong clamp to press the bow out.
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This might work. The leg is fairly springy though. If you have a workshop or
a large enough place to keep tools, I suggest you buy a Harbor Freight 10T
press. It will come with some v-blocks which work wonderfully for this. You
can use the press for lots of things. If you work on stuff, I mean. Some
folks have no desire to collect tools. I wish them no ill-will, I just don't
understand them.
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GeoB
"Members of Congress should be compelled to wear uniforms like NASCAR drivers, so we could identify their corporate sponsors" |
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pc.king(at)comcast.net
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| Posted: Mon Mar 31, 2014 12:06 pm Post subject: Bent gear leg question.. |
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That's a nice tool.
I am impressed at how many tools HF can design around one bottle jack.
My favorite is the tickup truck crane.
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lcottrell
Joined: 29 May 2006
Posts: 1494
Location: Jordan Valley, Or
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| Posted: Mon Mar 31, 2014 12:40 pm Post subject: Bent gear leg question.. |
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From what I have so far read, his problem is minor at the very worst, and the last thing he needs to do is try to correct something that could best be described as "cosmetic". I went through the straightening exercise at least a couple of times before I gave up and went to the steel gear legs.
My plane always dropped the right wing first and the bends were always in that side of the landing gear. If he merely unbolts the gear leg in the socket, turns it 180 degrees, the next time he drops it in the leg will again be straight or bent in the other direction.
If he does decide that he has to straighten it, then he should find a good "press" ( someone should have one among his friends) and suspend the leg bent side up on some 2x4's, stick another on the high side and apply enough pressure to go a bit past straight. That is of course necessary to allow for the amount of spring in the leg. He should be very careful to not scratch the alum. which is the reason for cradling it between wood.
Quite frankly wimpy alum. gear legs, have caused me more trouble than any other feature of flying. I would advise every one that the change to 4130 spring steel gear legs will pay rewards that will make the change one of the best things that you could do for yourself. The plane lands better with taller legs, and the 4130 is forgiving enough that a sloppy or rough ground landing will not cause damage to the plane, you will just bounce back into the air. The theory is that the alum will bend thus preventing other damage to the cage. However if the leg bends and you are carrying any speed, being whipped into a ditch can cause some serious repairs, or a wheel snapping off from hitting a rock can cause you to see the world from a bit different perspective, such as upside down.
Just a hard won lesson that I have paid for three times. May not work for you, but I wouldn't bet on it.
Larry
On Mon, Mar 31, 2014 at 1:40 PM, George Bearden <gab16(at)sbcglobal.net (gab16(at)sbcglobal.net)> wrote:
| Quote: | --> Kolb-List message posted by: "George Bearden" <gab16(at)sbcglobal.net (gab16(at)sbcglobal.net)>
> using some blocks then taking a strong clamp to press the bow out.
This might work. The leg is fairly springy though. If you have a workshop or
a large enough place to keep tools, I suggest you buy a Harbor Freight 10T
press. It will come with some v-blocks which work wonderfully for this. You
can use the press for lots of things. If you work on stuff, I mean. Some
folks have no desire to collect tools. I wish them no ill-will, I just don't
understand them.
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stuart(at)harnerfarm.net
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| Posted: Mon Mar 31, 2014 12:57 pm Post subject: Bent gear leg question.. |
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Perfect! I have been looking for an excuse to get a press. I think maybe I
should order one now so I have it if I ever do bend the gear. Good
preventative medicine don't you think?
Actually, I think one could put the gear leg in a receiver hitch and use a
cheater pipe to apply the force. Not as precision as the shop press but it
may work just fine.
Stuart
Do not archive
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GeoB
Joined: 16 Jun 2009
Posts: 207
Location: Fresno, CA
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| Posted: Mon Mar 31, 2014 1:35 pm Post subject: Re: Bent gear leg question.. |
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> put the gear leg in a receiver hitch
My truck has 4,000 lbs on the front wheels. Sometimes I just run over things to bend them the way I want. Not applicable here.
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GeoB
"Members of Congress should be compelled to wear uniforms like NASCAR drivers, so we could identify their corporate sponsors" |
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zeprep251(at)aol.com
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| Posted: Mon Mar 31, 2014 2:34 pm Post subject: Bent gear leg question.. |
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I did the straighten thing a couple times clamped them in the big vise with soft jaws and used a floor jack handle for some leverage. Even with the4/12 ft muscle,you really have to haul on that handle. The press is the best.
Sent from my iPhone
[quote] On Mar 31, 2014, at 4:56 PM, "Stuart Harner" <stuart(at)harnerfarm.net> wrote:
Perfect! I have been looking for an excuse to get a press. I think maybe I
should order one now so I have it if I ever do bend the gear. Good
preventative medicine don't you think?
Actually, I think one could put the gear leg in a receiver hitch and use a
cheater pipe to apply the force. Not as precision as the shop press but it
may work just fine.
Stuart
Do not archive
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smlplanet(at)msn.com
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| Posted: Mon Mar 31, 2014 2:52 pm Post subject: Bent gear leg question.. |
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If you can't find a shop with a press you may want to check out Harbor Freight..good prices. I have both a press and a tubing benders and have used both for straightening gear legs and boat shafts for friends. If in a pinch do like we did years ago (shade tree mechanics) a hitch receiver and a pipe wrench and a good bar for leverage...if there is a will there is a way!
[quote] Subject: Re: Bent gear leg question..
From: zeprep251(at)aol.com
Date: Mon, 31 Mar 2014 18:34:01 -0400
To: kolb-list(at)matronics.com
--> Kolb-List message posted by: Gary Aman <zeprep251(at)aol.com>
I did the straighten thing a couple times clamped them in the big vise with soft jaws and used a floor jack handle for some leverage. Even with the4/12 ft muscle,you really have to haul on that handle. The press is the best.
Sent from my iPhone
> On Mar 31, 2014, at 4:56 PM, "Stuart Harner" <stuart(at)harnerfarm.net> wrote:
>
> --> Kolb-List message posted by: "Stuart Harner" <stuart(at)harnerfarm.net>
>
> Perfect! I have been looking for an excuse to get a press. I think maybe I
> should order one now so I have it if I ever do bend the gear. Good
> preventative medicine don't you think?
>
> Actually, I think one could put the gear leg in a receiver hitch and use a
> cheater pipe to apply the force. Not as precision as the shop press but it
> may work just fine.
>
> Stuart
>
> Do not archive
>
> --
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ceengland7(at)gmail.com
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| Posted: Mon Mar 31, 2014 4:10 pm Post subject: Bent gear leg question.. |
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I'd pay particular attention to Larry's advice on the 2x4's. Scratches/dents on any highly stressed structure are bad, and if you nick a gear leg while straightening, the next less than ideal landing (or even some good landing sometime in the future) might result in the remaining stub of leg digging into the runway.
Charlie
(been there, done that on tapered steel RV-4 legs using Harbor freight press)
On 3/31/2014 3:39 PM, Larry Cottrell wrote:
[quote] From what I have so far read, his problem is minor at the very worst, and the last thing he needs to do is try to correct something that could best be described as "cosmetic". I went through the straightening exercise at least a couple of times before I gave up and went to the steel gear legs.
My plane always dropped the right wing first and the bends were always in that side of the landing gear. If he merely unbolts the gear leg in the socket, turns it 180 degrees, the next time he drops it in the leg will again be straight or bent in the other direction.
If he does decide that he has to straighten it, then he should find a good "press" ( someone should have one among his friends) and suspend the leg bent side up on some 2x4's, stick another on the high side and apply enough pressure to go a bit past straight. That is of course necessary to allow for the amount of spring in the leg. He should be very careful to not scratch the alum. which is the reason for cradling it between wood.
Quite frankly wimpy alum. gear legs, have caused me more trouble than any other feature of flying. I would advise every one that the change to 4130 spring steel gear legs will pay rewards that will make the change one of the best things that you could do for yourself. The plane lands better with taller legs, and the 4130 is forgiving enough that a sloppy or rough ground landing will not cause damage to the plane, you will just bounce back into the air. The theory is that the alum will bend thus preventing other damage to the cage. However if the leg bends and you are carrying any speed, being whipped into a ditch can cause some serious repairs, or a wheel snapping off from hitting a rock can cause you to see the world from a bit different perspective, such as upside down.
Just a hard won lesson that I have paid for three times. May not work for you, but I wouldn't bet on it.
Larry
On Mon, Mar 31, 2014 at 1:40 PM, George Bearden <gab16(at)sbcglobal.net (gab16(at)sbcglobal.net)> wrote:
| Quote: | --> Kolb-List message posted by: "George Bearden" <gab16(at)sbcglobal.net (gab16(at)sbcglobal.net)>
> using some blocks then taking a strong clamp to press the bow out.
This might work. The leg is fairly springy though. If you have a workshop or
a large enough place to keep tools, I suggest you buy a Harbor Freight 10T
press. It will come with some v-blocks which work wonderfully for this. You
can use the press for lots of things. If you work on stuff, I mean. Some
folks have no desire to collect tools. I wish them no ill-will, I just don't
understand them.
===========
arget="_blank">http://www.matronics.com/Navigator?Kolb-List
===========
http://forums.matronics.com
===========
le, List Admin.
="_blank">http://www.matronics.com/contribution
===========
|
[b]
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rickofudall
Joined: 19 Sep 2009
Posts: 1392
Location: Udall, KS, USA
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| Posted: Mon Mar 31, 2014 7:41 pm Post subject: Bent gear leg question.. |
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Ditto on all the advice about avoiding nicks or scratches. I cut short lengths of plastic pipe and slipped them over the leg so that the vee blocks and the cylinder post cannot damage the leg. Trying to hold gear leg with one hand, pump the hydraulic cylinder with the other and keep flat blocks from slipping off at the same time will make you crazy. Get the 20 ton press.
Rick Girard
On Mon, Mar 31, 2014 at 7:11 PM, Charlie England <ceengland7(at)gmail.com (ceengland7(at)gmail.com)> wrote:
| Quote: | I'd pay particular attention to Larry's advice on the 2x4's. Scratches/dents on any highly stressed structure are bad, and if you nick a gear leg while straightening, the next less than ideal landing (or even some good landing sometime in the future) might result in the remaining stub of leg digging into the runway.
Charlie
(been there, done that on tapered steel RV-4 legs using Harbor freight press)
On 3/31/2014 3:39 PM, Larry Cottrell wrote:
| Quote: | From what I have so far read, his problem is minor at the very worst, and the last thing he needs to do is try to correct something that could best be described as "cosmetic". I went through the straightening exercise at least a couple of times before I gave up and went to the steel gear legs.
My plane always dropped the right wing first and the bends were always in that side of the landing gear. If he merely unbolts the gear leg in the socket, turns it 180 degrees, the next time he drops it in the leg will again be straight or bent in the other direction.
If he does decide that he has to straighten it, then he should find a good "press" ( someone should have one among his friends) and suspend the leg bent side up on some 2x4's, stick another on the high side and apply enough pressure to go a bit past straight. That is of course necessary to allow for the amount of spring in the leg. He should be very careful to not scratch the alum. which is the reason for cradling it between wood.
Quite frankly wimpy alum. gear legs, have caused me more trouble than any other feature of flying. I would advise every one that the change to 4130 spring steel gear legs will pay rewards that will make the change one of the best things that you could do for yourself. The plane lands better with taller legs, and the 4130 is forgiving enough that a sloppy or rough ground landing will not cause damage to the plane, you will just bounce back into the air. The theory is that the alum will bend thus preventing other damage to the cage. However if the leg bends and you are carrying any speed, being whipped into a ditch can cause some serious repairs, or a wheel snapping off from hitting a rock can cause you to see the world from a bit different perspective, such as upside down.
Just a hard won lesson that I have paid for three times. May not work for you, but I wouldn't bet on it.
Larry
On Mon, Mar 31, 2014 at 1:40 PM, George Bearden <gab16(at)sbcglobal.net (gab16(at)sbcglobal.net)> wrote:
| Quote: | --> Kolb-List message posted by: "George Bearden" <gab16(at)sbcglobal.net (gab16(at)sbcglobal.net)>
> using some blocks then taking a strong clamp to press the bow out.
This might work. The leg is fairly springy though. If you have a workshop or
a large enough place to keep tools, I suggest you buy a Harbor Freight 10T
press. It will come with some v-blocks which work wonderfully for this. You
can use the press for lots of things. If you work on stuff, I mean. Some
folks have no desire to collect tools. I wish them no ill-will, I just don't
understand them.
===========
arget="_blank">http://www.matronics.com/Navigator?Kolb-List
===========
http://forums.matronics.com
===========
le, List Admin.
="_blank">http://www.matronics.com/contribution
===========
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_blank">http://www.matronics.com/contribution
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Carolina Flyer
Joined: 03 Oct 2010
Posts: 62
Location: Buffalo, South Carolina
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| Posted: Mon Mar 31, 2014 9:18 pm Post subject: Re: Bent gear leg question.. |
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I can't remember where I found these pictures but it looks like this would work very well to me.
Here is a way to help eliminate bent gear legs, check out the video
http://youtu.be/ysZBXy-pDzI
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