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ggower_99(at)yahoo.com
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 Posted: Tue Mar 31, 2009 9:20 am Post subject: Weak 701 Nose Gear ? |
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Hello All,
I think that the tube axle has his reason to be, There are parts in any machinery and electric devices that act as a fuse, I am sure that that axle is one of the several "fuses" in the airplane.
Someone that is doing his landings on the front wheel first (in a regular basis), even if the pilot bends or not the axle or the nose gear, is going to end wheels up eventually.
We all need to practice all of our landings on the mains, and keep the front wheel in the air as much as the elevator keeps it up.
In fact, about a 100 hrs ago, we were having some little problems with the fine touch of the elevator at landing, our Instructor was able to keep the 701 on the mains only, when landing, for more that 600 ft to prove us it can be done. So for this training we installed a little "office seat" wheel in the tail tie down ring and practiced gently to make "wheelies".
A few hours later we could stop the plane as a tail dragger, on that little wheel; then we applied power and managed to take off without the front wheel touching... Was lots of fun and gave us a great feeling of the elevator, and better knowledge of our great airplane.
Saludos
Gary Gower
Flying from Chapala, Mexico.
Learning to fly the 701 is lots of fun.
--- On Mon, 3/30/09, Larry <lrm(at)skyhawg.com> wrote:
| Quote: | From: Larry <lrm(at)skyhawg.com>
Subject: Re: Zenith701801-List: Weak 701 Nose Gear?
To: zenith701801-list(at)matronics.com
Date: Monday, March 30, 2009, 8:45 PM
| Quote: | --> Zenith701801-List message posted by: Larry <lrm(at)skyhawg.com>
It bothered me when I built my 701 that the nose wheel axle was made of thin
wall 4130 tubing with nuts welded in each end. I threw it away and built a new
one out of solid solid stainless steel. A little more weight, but so what!! It
will not bend. Larry, N1345L
Tony Sim wrote:
| Quote: | To all,
recently had an event with a 701. Touched down on mains and when
the nosewheel lowered in a light to moderate manner the aircraft started to veer
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to the left . Right foot had no effect and the rate of turn increased resulting
in the left wheel lifting and the right wing leading edge slat contacting the
ground
| Quote: |
I was concerned that I may have applied right foot to the left rudder
pedal on the other side which could be a danger with the peddals so close
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together, but wondered if that was the case why this had not happened before
| Quote: |
We dicovered shortly after buying the aircraft that the nosewheel axel was
bent and I am now tending to think that the veering off to the left was due to
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failure following a prevous incident or number of incidents.
| Quote: |
Any thoughts or theories welcomed . Heck of a feeling when you put an
imput into the controls that you have done for many years and hours and have no
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response.
| Quote: |
Tony
From: NYTerminat(at)aol.com
Date: Mon, 30 Mar 2009 16:56:36 -0400
Subject: Re: Weak 701 Nose Gear?
To: zenith701801-list(at)matronics.com
Les,
I can tell you that it was a very hard landing. Just look at the axle on
the nose gear, it takes a lot to get that to bend. My guess is that it was
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either porpoised in and got out of control or it did not hit the mains first and
hit the nose gear first.
| Quote: | Recently a learned about a new (~30 flight hours) 701 that had its nose
gear
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| Quote: | collapse on landing, causing considerable damage and was able to obtain
two
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| Quote: | pictures (see attached). The gear tube buckled and bent back just above
the
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| Quote: | lower bearing, which bent the lower bearing and firewall. The wheel bent
against the fus and deformed the lower structure behind the gear. The
radiator was pushed up into the exhaust and holed, and the bottom cowling
was damaged. The prop, and possibly the engine were also casualties of
this
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| Quote: | collapse. The wheel axle was bent up with the bolts holding the axle to
the
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| Quote: | fork still in place. The fork was bent and the tire pushed upward into the
fork so that the tire tread was cut by a bolt on the inside of the fork.
The
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| Quote: | upper gear tube and upper bearing did not appear to be affected. I was
able to find out that the plane was not overweight and the pilot and
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| Quote: | passenger were not injured. The pilot said the plane was built to Zenith
specs. She was making a, admittedly "hard", short field landing
on a paved
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| Quote: | strip at a high angle of attack when it happened. The main gear touched
first and was not damaged.
Like most of us, I have made some awful hard landings in my 701 but have
been relieved to find little or no gear damage. Until I learned about this
failure I thought that 701 gear was very resilient. Now I am beginning to
wonder. Have any of you seen or experienced a similar collapse or
speculate as to
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| Quote: | its cause? Les
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[quote][b]
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randy(at)rjhebertassoc.co
Guest
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| Posted: Tue Mar 31, 2009 9:56 am Post subject: Weak 701 Nose Gear ? |
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True Gary
Also if the axle fails, the wheel does not turn and increased force of the wheel dragging along can put undue stress in the thin tube.
Don’t you guys love being armchair quarterbacks.
DO NOT Archive
Randall J Hebert
Randall J Hebert & Associates, Inc
Consulting Engineers
Ph 337-261-1976 Fx 337-261-1977
From: owner-zenith701801-list-server(at)matronics.com [mailto:owner-zenith701801-list-server(at)matronics.com] On Behalf Of Gary Gower
[quote][b]
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n801bh(at)netzero.com
Guest
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| Posted: Tue Mar 31, 2009 3:48 pm Post subject: Weak 701 Nose Gear ? |
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Ya know, I really like the way Gary thinks. He is a true diehard experimental pilot and wants to learn all about the plane he flies. One day I hope to meet him in person..
do not archive
Ben Haas
N801BH
www.haaspowerair.com
--------
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