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frans(at)paardnatuurlijk.
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 Posted: Fri Apr 17, 2009 7:40 am Post subject: Trike nose wheel castor spindle and yoke failure. Europa Fl |
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G-IANI wrote:
| Quote: | 2) If there a better man/woman out there, who can come up with an improved
design for the nose wheel, I am sure we will be pleased to hear from them.
What we want is proper trailing link springing, controllable anti shimmy
damping, no weight increase etc.
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If we are referring to the bending spindle problem only, I believe this
is easy to solve.
Aircraft Spruce offers a few tubes with the same diameter and material
as the original spindle, with various wall thicknesses.
Have a look at:
http://www.aircraftspruce.com/catalog/mepages/4130tubing_un1.php
Most likely you can insert a matching tube inside the original spindle
to make it stronger.
The inner tube can be fixed inside the original spindle by the roll pin,
but of course some redux between the two tubes would make it even stronger.
You can go further than that: As I was looking for a way to increase the
length of the nose wheel assembly, to accomodate for a larger prop, I
got the idea from Karl Heindle to increase the length of the spindle and
to insert a nylon block between the friction disk and wheel fork. Alas,
ACS has no tubes with a wall thickness similar to the original spindle,
but there are tubes with sizes that allow them to fit into each other,
and by doing so, you can create any wall thickness you want. It is easy
to make a spindle that is stronger than the original spindle, and also
larger if that is what you want.
Karl is flying from his rough gras strip for years now with a 2" larger
nose wheel spindle. I'm working on the same modification. If anyone is
interested, I have quite some left of the nylon rod that fills up the
gap between the wheel fork and friction disk.
--
Frans Veldman
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kheindl(at)msn.com
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| Posted: Sat Apr 18, 2009 6:01 am Post subject: Trike nose wheel castor spindle and yoke failure. Europa Fl |
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Garry C
You are right. I never did a wheelbarrow landing. But it happened to me in a landing attempt in very severe gusting with 90 degree crosswind conditions. The gusts were throwing me about like a pingpong ball. And one gust 'threw' me down with such force that I was sure I had lost my landing gear. Had I continued with my landing I would have been a writeoff. I discovered much later that one of the exhaust pipes had come off C because one of the welded spring hooks had come off first.
Karl do not archive
[quote] From: garrys(at)tampabay.rr.com
To: europa-list(at)matronics.com
Subject: Re: Trike nose wheel castor spindle and yoke failure. Europa Flyer Mag.
Date: Sat C 18 Apr 2009 08:25:55 -0400
--> Europa-List message posted by: "Garry" <garrys(at)tampabay.rr.com>
With no disrespect to anyone C it baffles me as to how many Europa pilots
continue to land nosewheel first (wheelbarrow). The first thing you learn
in basic flight landing training is to hold the nosewheel off for as long as
you can C until the elevator looses the power to hold it up. The Europa
trigear is so easy and forgiving it practically lands itself. In 45 years
of flying I've never touched down the nosewheel first. Can someone explain
to me how this keeps happening? Again C I mean no disrespect to
anyone....I'm just wondering if there's something I'm overlooking here.
Garry Stout
914 Trigear
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