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steve2(at)sover.net
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 Posted: Sun Jan 01, 2006 6:14 am Post subject: Slips / Rudder Pulley Brackets |
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Good, I'm not the only one to give the rudder a little boot on final
sometimes. Doesn't slip like a Cub, but gets the job done and I don't have
to mess with power. We need a steeper approach than standard at home base.
Speaking of rudders, we noticed something last annual that was really tough
to see. On the bulkhead ahead of the pilot's feet (forgot the number) are
two rudder pulleys on either side of the airframe. They are a bitch to get
at. After pulling the side nose inspection panel off, we noticed a 1/4 inch
long crack at the top of the rudder pulley bracket. It takes some work, but
we also saw the same crack on the 'back' side of the bracket.
Since we saw it on the one bracket, we took a real hard look at the other
side and found the same two cracks on the opposite side pulley brackets. The
airframe's got about 8000 hours on it, and it is used for survey work where
rudder is used often to correct yaw while on flightlines. Aircraft has been
indoors for at least 20 years, maybe longer. These brackets are a bear to
get at. It's one of the few places on the Commander where I thought it could
have been made of a heavier gauge.
Talk about rudders and slipping got me to remembering this. I'd be
interested in hearing if anyone else has seen the same.
Steve
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tfisher(at)commandergroup
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| Posted: Sun Jan 01, 2006 9:26 am Post subject: Slips / Rudder Pulley Brackets |
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My machine has been flying survey for 19 years so I think I will go take a
look, thanks for that.
Tom F.
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wjrhamilton(at)optusnet.c
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| Posted: Mon Jan 02, 2006 12:08 am Post subject: Slips / Rudder Pulley Brackets |
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Steve,
My 500A (#1274) is the same, and it sure is hard to get at, So far I
am just monitoring, while a work out a doable repair scheme.
I also have the "standard"crack in the nose wheel support structure,
where the shaft #5750039-11 and bearings #SF1301-1 reside, but at
least this will be a tad easier to repair.
Regards,
Bill Hamilton
At 01:14 2/01/2006, you wrote:
Good, I'm not the only one to give the rudder a little boot on final
sometimes. Doesn't slip like a Cub, but gets the job done and I don't have
to mess with power. We need a steeper approach than standard at home base.
Speaking of rudders, we noticed something last annual that was really tough
to see. On the bulkhead ahead of the pilot's feet (forgot the number) are
two rudder pulleys on either side of the airframe. They are a bitch to get
at. After pulling the side nose inspection panel off, we noticed a 1/4 inch
long crack at the top of the rudder pulley bracket. It takes some work, but
we also saw the same crack on the 'back' side of the bracket.
Since we saw it on the one bracket, we took a real hard look at the other
side and found the same two cracks on the opposite side pulley brackets. The
airframe's got about 8000 hours on it, and it is used for survey work where
rudder is used often to correct yaw while on flightlines. Aircraft has been
indoors for at least 20 years, maybe longer. These brackets are a bear to
get at. It's one of the few places on the Commander where I thought it could
have been made of a heavier gauge.
Talk about rudders and slipping got me to remembering this. I'd be
interested in hearing if anyone else has seen the same.
Steve
|
CONFIDENTIALITY & PRIVILEGE NOTICE
W.J.R.Hamilton,Glenalmond Group Companies,Fighter Flights Internet
Services and Warbirds.Net. & <wjrhamilton(at)optusnet.com.au>.
This message is intended for and should only be used by the
addressee. It is confidential and may contain legally privileged
information.If you are not the intended recipient any use
distribution,disclosure or copying of this message is strictly
prohibited.Confidentiality and legal privilege attached to this
communication are not waived or lost by reason of the mistaken
delivery to you.If you have received this message in error, please
notify us immediately to Australia 61 (0)408 876 526
Dolores capitis non fero. Eos do.
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steve2(at)sover.net
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| Posted: Mon Jan 02, 2006 5:57 am Post subject: Slips / Rudder Pulley Brackets |
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Good morning Bill,
The four cracks were nearly identical in length on ours, and we're
monitoring also. We did put a tiny stop-drill on each, but seeing as they
cracked to a certain point and no further, we're wondering if they perhaps
become somewhat stable over time once that intital crack forms?
Steve
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moe(at)rosspistons.com
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| Posted: Tue Jan 03, 2006 7:28 am Post subject: Slips / Rudder Pulley Brackets |
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Steve,
What model Commander was this on?
Moe
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steve2(at)sover.net
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| Posted: Tue Jan 03, 2006 8:18 am Post subject: Slips / Rudder Pulley Brackets |
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1961 500B (Converted from an A in 1966 I think.)
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wjrhamilton(at)optusnet.c
Guest
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| Posted: Tue Jan 03, 2006 6:23 pm Post subject: Slips / Rudder Pulley Brackets |
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Steve,
That seems possible, as close as I can get to the brackets to see,
the original crack looks quite old, and the engineers who had been
looking after the aircraft for some years, before I bought it
indicated that they had not observed any change, but in those few
years the aircraft did only low annual hours. My total airframe time
is about 11,000, some of it on quite rough strips.
Cheers,
Bill Hamilton
At 00:57 3/01/2006, you wrote:
Good morning Bill,
The four cracks were nearly identical in length on ours, and we're
monitoring also. We did put a tiny stop-drill on each, but seeing as they
cracked to a certain point and no further, we're wondering if they perhaps
become somewhat stable over time once that intital crack forms?
Steve
CONFIDENTIALITY & PRIVILEGE NOTICE |
W.J.R.Hamilton,Glenalmond Group Companies,Fighter Flights Internet
Services and Warbirds.Net. & <wjrhamilton(at)optusnet.com.au>.
This message is intended for and should only be used by the
addressee. It is confidential and may contain legally privileged
information.If you are not the intended recipient any use
distribution,disclosure or copying of this message is strictly
prohibited.Confidentiality and legal privilege attached to this
communication are not waived or lost by reason of the mistaken
delivery to you.If you have received this message in error, please
notify us immediately to Australia 61 (0)408 876 526
Dolores capitis non fero. Eos do.
| | - The Matronics Commander-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Commander-List |
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john(at)vormbaum.com
Guest
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| Posted: Tue Jan 03, 2006 6:47 pm Post subject: Slips / Rudder Pulley Brackets |
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My 500B has 18,000 hours on it. My rudder pulley brackets are cracked.
Morris includes an inspection of them on his 100hr. inspection sheet. He
informed me that when they manufactured the brackets, they folded them but
didn't stress relieve the corners. He's seen multitudes of cracked ones, and
he says even the ones that haven't been stop drilled only crack to a certain
point. He says it's a problem he's been aware of only for the last 20 years
or so.
He is of the opinion that they probably cracked about 10 minutes after the
airframe was built (ok, maybe a little longer than that). He's also
mentioned that he's never *ever* seen or heard of one failing.
I guess I'll just continue to keep an eye on my pulleys, and see if anything
changes....
/John
| | - The Matronics Commander-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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