Hello John,
I think there is a lot of truth in what you are hinting at. Us trigear
jockeys are having to pay dearly for shortcomings in the mono. I always
wondered if that mod 70 was based on a semi crash landing in a mono. All my
fittings are dead tight and hope they stay that way. Wasn't William's mono
involved also in a gear up landing ? As you say, the statistics about slop,
that has developed over time, would be very useful to know.
As a side issue I am again questioning the wisdom of mod 71 with the steel
springs. My Europa has turned into a bucking bronco on local grass strips,
and if I didn't take a firm grip on the control column, that mass balance
arm would be flying all over the place.
Karl
>From: TELEDYNMCS@aol.com
>Reply-To: europa-list@matronics.com
>To: europa-list@matronics.com
>Subject: Europa-List: Hole Enlongation vs. Landing Gear Type
>Date: Mon, 25 Jun 2007 09:18:07 EDT
>
>Greetings team,
>
>As I read through the various theories of why the pin holes elongate I'm
>left with a question that nobody seems to be asking (or maybe somebody did
>ask
>and I missed it).
>
>This is a little out of my area of expertise, but it seems rational to me
>that either a mono or a conventional gear Europa, i.e., one with a
>tailwheel,
>would transfer significantly more stress loads to the components in the
>rear
>of the aircraft, thus leading to more wear on everything back there. By
>contrast, the trigear would dampen those stress loads by virtue of the main
>gear
>being a considerable distance from the parts in question, thus damping any
>forces transferred to the tail area. Stresses transferred by a trigear
>would
>further be damped by the spring action of the main gear legs and the tires
>(tyres).
>
>Has anyone ever correlated pin wear to landing gear type? Are there more
>mono's and conventional gear Europa's showing pin wear and or hole
>elongation
>than trigears?
>
>In my case, N245E, a trigear, now has a bit over 100 hours TT. About 90%
>of
>the take offs and landings thus far have been made from my grass strip and
>my
>pip pins are still tight as a tick. I have observed no increased play in
>the
>tailplanes and only a slight amount of play in the trim tabs and that
>hasn't
>changed since day one. I've also looked closely at all the hardware in the
>tail and I cannot detect any wear on any components whatsoever. I know
>this is
>anecdotal at best, but it seams reasonable for those in the know to
>correla
>te pin wear to landing gear type as they chase down the root cause of the
>wear
>that caused the tailplane flutter.
>
>Regards,
>
>John Lawton
>Whitwell, TN (TN89)
>N245E - Flying
>
>
>************************************** See what's free at
>http://www.aol.com.
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