Today's Message Index:
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1. 07:12 AM - Zodiac 601 HD/HDS Wings Wanted (gpjann1@netzero.com)
2. 01:40 PM - Nose wheel fork failure (Thruster87)
3. 02:07 PM - Re: Nose wheel fork failure (chris Sinfield)
4. 02:59 PM - Re: Nose wheel fork failure (Terry Phillips)
5. 02:59 PM - Re: Nose wheel fork failure (Terry Turnquist)
6. 03:09 PM - Re: Nose wheel fork failure (Gig Giacona)
7. 03:46 PM - Re: Nose wheel fork failure (Bryan Martin)
8. 05:38 PM - Re: Nose wheel fork failure (Thruster87)
9. 08:09 PM - Re: Nose wheel fork failure (Ron Lendon)
10. 08:10 PM - Re: Re: Nose wheel fork failure (jeyoung65@aol.com)
11. 08:25 PM - Re: Nose wheel fork failure (Thruster87)
12. 08:28 PM - Re: Nose wheel fork failure (Thruster87)
13. 09:03 PM - Re: Nose wheel fork failure (Craig Payne)
14. 11:36 PM - Re: Re: Nose wheel fork failure (Craig Payne)
Message 1
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| Subject: | Zodiac 601 HD/HDS Wings Wanted |
I'm looking for HD or HDS wings in kit or partially finished stage.
Greg 770-277-1637
gpjann1@netzero.com
My email address is gpjann1@netzero.com
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Message 2
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| Subject: | Nose wheel fork failure |
During high speed taxi runs at around 50knots lifted the nose wheel off and the
mains maybe yes or no [ spectators not sure either] on lowering via elevator
input [in hind site should have just pulled more elevator nose up for a smoother
transition] the nose wheel come down and bumped back up[the runway has
a couple of bumps as well] and on going down again the fork bent side ways
as it hit the runway [due to a small right rudder input the wheel would have been
pointing to the right].Basically the fork just collapsed/folded to the right
jammed the nose wheel thus causing a prop strike,bent axle,firewall,and
nose wheel strut. So it's back to the hangar for repairs and I'll look at strengthening
the fork so it will resist the side loads better. Sitting here with
a gnawing feeling in the pit of my stomach and trying to asses what went wrong.
Cheers T87 :(
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=269254#269254
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| Subject: | Re: Nose wheel fork failure |
Allan
If you need to borrow some parts till yours are ready / fixed give me a call. Sorry
for your troubles..
Chris
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http://forums.matronics.com/viewtopic.php?p=269257#269257
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| Subject: | Re: Nose wheel fork failure |
Bummer, T87
That is everyone's worst fear. I hope that your crankshaft is OK. The
linkage between the rudder and the nose wheel has long been one of my
concerns about the basic design. I wish there was an option for a castering
nose wheel. I'd love to just cover over those slots in the fire wall with
solid steel. Keep us informed about the repair process.
Terry
At 01:39 PM 10/24/2009 -0700, you wrote:
>During high speed taxi runs at around 50knots lifted the nose wheel
>off and the mains maybe yes or no [ spectators not sure either] on
>lowering via elevator input [in hind site should have just pulled more
>elevator nose up for a smoother transition] the nose wheel come down
>and bumped back up[the runway has a couple of bumps as well] and on
>going down again the fork bent side ways as it hit the runway [due to a
>small right rudder input the wheel would have been pointing to the
>right].Basically the fork just collapsed/folded to the right jammed the
>nose wheel thus causing a prop strike,bent axle,firewall,and nose
>wheel strut. So it's back to the hangar for repairs and I'll look at
>strengthening the fork so it will resist the side loads better. Sitting
>here with a gnawing feeling in the pit of my stomach and trying to asses
>what went wrong. Cheers T87 :(
Terry Phillips ZBAGer
ttp44~at~rkymtn.net
Corvallis MT
601XL/Jab 3300 s .. l .. o .. o .. w build kit - Tail, flaps, & ailerons
are done; waiting on the wings
http://www.mykitlog.com/N47TP/
Message 5
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| Subject: | Re: Nose wheel fork failure |
First, sorry for your mishap..but it could have been worse!- I'm sure the
re are other 601 XL drivers thinking about their up coming test flights..an
d I'm wondering- (1) did you get any time in a 601XL prior and (2) are yo
u going to reconsider high speed taxi runs based on your experience? I hope
the damage is not too costly in time or money!- Thanks.
Terry
--- On Sat, 10/24/09, Thruster87 <alania@optusnet.com.au> wrote:
From: Thruster87 <alania@optusnet.com.au>
Subject: Zenith601-List: Nose wheel fork failure
During high speed taxi runs at around 50knots- lifted the nose wheel off
- and the mains maybe yes or no [ spectators not sure either] on lowering
via elevator input [in hind site should have just pulled more elevator-
nose up for a smoother transition]- the nose wheel- come down and- bu
mped- back up[the runway has a couple of bumps as well] and on going down
again the fork bent side ways as it hit the runway [due to a small right r
udder input the wheel would have been pointing to the right].Basically the
fork just collapsed/folded- to the right jammed the nose wheel- thus ca
using- a prop strike,bent axle,firewall,and nose wheel- strut. So it's
back to the hangar for repairs and I'll look at strengthening- the fork s
o it will resist the side loads better. Sitting here with a gnawing feeling
in the pit of my stomach and trying to asses what went wrong. Cheers T87
- :(
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=269254#269254
le, List Admin.
=0A=0A=0A
Message 6
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| Subject: | Re: Nose wheel fork failure |
First off did you have the fork doubler in place?
Second 50 kt taxi runs are way too fast.
--------
W.R. "Gig" Giacona
601XL Under Construction
See my progress at www.peoamerica.net/N601WR
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=269266#269266
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| Subject: | Re: Nose wheel fork failure |
Does your nosewheel fork have the doubler? My early plans did not show
a nosewheel doubler, and it didn't come with the kit. I bent my fork
on my first landing. The nosewheel fork doubler was added to later
plans.
I would suggest that anyone who attempts to lift the nosewheel off
during taxi tests should be prepared to cut the throttle immediately
and continue to hold the nose up and let it settle instead of trying
to push forward to set it back down. The elevator is surprisingly
responsive until you get used to it. I had a prop strike on mine
during my taxi tests by making the same mistake. The fact that I had a
70 inch prop instead of the current 68 inch prop didn't help either.
On Oct 24, 2009, at 4:39 PM, Thruster87 wrote:
> >
>
> During high speed taxi runs at around 50knots lifted the nose wheel
> off and the mains maybe yes or no [ spectators not sure either] on
> lowering via elevator input [in hind site should have just pulled
> more elevator nose up for a smoother transition] the nose wheel
> come down and bumped back up[the runway has a couple of bumps as
> well] and on going down again the fork bent side ways as it hit the
> runway [due to a small right rudder input the wheel would have been
> pointing to the right].Basically the fork just collapsed/folded to
> the right jammed the nose wheel thus causing a prop strike,bent
> axle,firewall,and nose wheel strut. So it's back to the hangar for
> repairs and I'll look at strengthening the fork so it will resist
> the side loads better. Sitting here with a gnawing feeling in the
> pit of my stomach and trying to asses what went wrong. Cheers T87 :(
--
Bryan Martin
N61BM, CH 601 XL,
RAM Subaru, Stratus redrive.
Message 8
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| Subject: | Re: Nose wheel fork failure |
I have the latest fork with the doubler installed, but it still folded side ways.I'd
done about 3hrs of taxi runs prior two days at around the 40 knot mark and
wanted to get near the lift-off envelope to see it would behave.We also did
a couple of runs with two up at 45-50 knots and we lifted/lightened [not of the
ground] the nose with no problems again to see how it would perform with the
extra weight.It was just fine.On the day with two on board there was a 10knot
cross wind and it weather cocked in a very predicable way and easy to handle.Just
prior to the incident it had just passed the final inspection as well.
Got the plane now back home and will start the repairs ASAP Cheers Alan
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=269278#269278
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| Subject: | Re: Nose wheel fork failure |
Sorry to hear about that.
I have been considering spring loading the front wheel so it can track separately
from the rudder. The front wheel really does need a good caster angle for
this to work, but I have been thinking about it.
--------
Ron Lendon, Clinton Township, MI
WW Corvair with Roy's Garage 5th bearing
Zodiac XL, ScrapBuilder ;-)
http://www.mykitlog.com/rlendon
Corvair Engine Prints:
http://home.comcast.net/~rlendon/site/
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=269293#269293
Message 10
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| Subject: | Re: Nose wheel fork failure |
I just did some high speed taxi runs. Because my rudder and nose wheel wer
e not inline I had a hard time keeping the aircraft on the runway untill
I corrected it. I did not see the misalignment until the son pointed it
out.I also was able to check the airspeed indicator during this taxi runs
using the GPS, within 5 MPH up to 50 MPH. Would suggest all make hight sp
eed taxi to see if the rudder and nose wheel are align Jerry of GA
-----Original Message-----
From: Thruster87 <alania@optusnet.com.au>
Sent: Sat, Oct 24, 2009 7:38 pm
Subject: Zenith601-List: Re: Nose wheel fork failure
>
I have the latest fork with the doubler installed, but it still folded sid
e
ays.I'd done about 3hrs of taxi runs prior two days at around the 40 knot
mark
nd wanted to get near the lift-off envelope to see it would behave.We also
did
couple of runs with two up at 45-50 knots and we lifted/lightened [not of
the
round] the nose with no problems again to see how it would perform with
the
xtra weight.It was just fine.On the day with two on board there was a 10kn
ot
ross wind and it weather cocked in a very predicable way and easy to
andle.Just prior to the incident it had just passed the final inspection
as
ell. Got the plane now back home and will start the repairs ASAP Cheers
Alan
ead this topic online here:
http://forums.matronics.com/viewtopic.php?p=269278#269278
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Message 11
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| Subject: | Re: Nose wheel fork failure |
Don't have any pics of the collapsed fork as we straightened so we could move the
aircraft
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=269297#269297
Attachments:
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http://forums.matronics.com//files/1_108.jpg
Message 12
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| Subject: | Re: Nose wheel fork failure |
And this
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=269298#269298
Attachments:
http://forums.matronics.com//files/2_402.jpg
Message 13
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| Subject: | Nose wheel fork failure |
Does your fork have the doubler (6G1-5 on an XL)? Any photos?
-- Craig
-----Original Message-----
From: owner-zenith601-list-server@matronics.com
[mailto:owner-zenith601-list-server@matronics.com] On Behalf Of Thruster87
Sent: Saturday, October 24, 2009 2:40 PM
Subject: Zenith601-List: Nose wheel fork failure
During high speed taxi runs at around 50knots lifted the nose wheel off
and the mains maybe yes or no [ spectators not sure either] on lowering via
elevator input [in hind site should have just pulled more elevator nose up
for a smoother transition] the nose wheel come down and bumped back
up[the runway has a couple of bumps as well] and on going down again the
fork bent side ways as it hit the runway [due to a small right rudder input
the wheel would have been pointing to the right].Basically the fork just
collapsed/folded to the right jammed the nose wheel thus causing a prop
strike,bent axle,firewall,and nose wheel strut. So it's back to the hangar
for repairs and I'll look at strengthening the fork so it will resist the
side loads better. Sitting here with a gnawing feeling in the pit of my
stomach and trying to asses what went wrong. Cheers T87 :(
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=269254#269254
Message 14
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| Subject: | Re: Nose wheel fork failure |
On the photo of the front gear is that extra stepped rod resting in the V
block (below the main cross tube that links to the rudder pedals) your own
addition or something from the factory? I'm guessing you had to add it when
the cross tube on the factory part didn't reach the V because to the stop
plate on the top of the gear. I think I can also see an extra shim fitted
into the V of the black nylon part.
-- Craig
-----Original Message-----
From: owner-zenith601-list-server@matronics.com
[mailto:owner-zenith601-list-server@matronics.com] On Behalf Of Thruster87
Sent: Saturday, October 24, 2009 9:28 PM
Subject: Zenith601-List: Re: Nose wheel fork failure
And this
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=269298#269298
Attachments:
http://forums.matronics.com//files/2_402.jpg
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