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jimh474(at)earthlink.net
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 Posted: Sun Mar 05, 2006 1:25 pm Post subject: Lift Struts |
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Folks;
The chromemoly ends of the lift struts are heated before they are flattened,
and some may not get normalized and are brittle.
The cracking may be cause from this. Also, not slightly chamfering the bolt
holes may cause the cracking from the sharp edges. Another factor is that
most Kolb's use pins to retain the lift struts which is a loose fit.
Vibration can also cause these item to crack.
As far as I know, I built the first round chromemoly lift struts for Bro
John in 1992, replacing chromemoly stream lined struts. The round are
stronger overall and a bunch cheaper. John added Aluminum streamlined tubing
to the outside for cosmetic and aero dynamic results.
In the ends of the struts I welded bushings for the attaching bolt, these
bushings were cut to fit the attach points eliminating any slop.
These struts have lasted over 2400 hours with no problems.
Jim Hauck
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planecrazzzy
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| Posted: Sun Mar 05, 2006 2:03 pm Post subject: Re: Lift Struts |
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Hi Jim,
How "thick" was the round chromemoly tubing that you made the Lift struts with ? ( how about I.D & O.D. )
I like that idea of having a full length chromemoly and
Alum streamline sleeve.
Gotta Fly...
Mike in MN N381PM
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