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teamgrumman(at)yahoo.com
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 Posted: Wed Nov 10, 2010 8:39 pm Post subject: see the crack? |
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Now, doesn't that just piss you off when that happens?
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tigerized(at)gmail.com
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| Posted: Wed Nov 10, 2010 10:02 pm Post subject: see the crack? |
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Yep. Those castings will only handle so much torque on the fitting.
On Wed, Nov 10, 2010 at 6:27 PM, Gary Vogt <teamgrumman(at)yahoo.com (teamgrumman(at)yahoo.com)> wrote:
[quote] Now, doesn't that just piss you off when that happens?
[b]
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flyv35b(at)minetfiber.com
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| Posted: Thu Nov 11, 2010 6:54 am Post subject: see the crack? |
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I guess you will be throwing the caliper away on this one!
[quote] ---
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flyadive(at)gmail.com
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| Posted: Thu Nov 11, 2010 7:36 am Post subject: see the crack? |
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What about welding the crack?
If you can weld an engine case why not this?
Barry
YOU ARE NOT
WE ARE
BECAUSE WE WERE
YOU ARE
The words to be inserted are VETERANS’ and FREE
[quote][b]
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teamgrumman(at)yahoo.com
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| Posted: Thu Nov 11, 2010 10:08 am Post subject: see the crack? |
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when I installed the fitting, I was thinking, "Something doesn't feel right. This isn't tightening like it should." It wasn't until after I got everything installed and was setting up to bleed the brakes that I noticed it.
From: Rick Lindstrom <tigerized(at)gmail.com>
To: teamgrumman-list(at)matronics.com
Sent: Wed, November 10, 2010 9:57:52 PM
Subject: Re: see the crack?
Yep. Those castings will only handle so much torque on the fitting.
On Wed, Nov 10, 2010 at 6:27 PM, Gary Vogt <teamgrumman(at)yahoo.com (teamgrumman(at)yahoo.com)> wrote:
| Quote: | Now, doesn't that just piss you off when that happens?
|
[quote][b]
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teamgrumman(at)yahoo.com
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| Posted: Thu Nov 11, 2010 10:10 am Post subject: see the crack? |
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I bled the brakes and there is no leak. This plane, the Project X plane, has no wheel pants yet. I'll keep an eye on it.
From: flyv35b <flyv35b(at)minetfiber.com>
To: teamgrumman-list(at)matronics.com
Sent: Thu, November 11, 2010 6:35:31 AM
Subject: Re: see the crack?
DIV { MARGIN:0px;} I guess you will be throwing the caliper away on this one!
[quote] ---
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flyv35b(at)minetfiber.com
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| Posted: Thu Nov 11, 2010 10:44 am Post subject: see the crack? |
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Probably, but would it be worth it? You could easily get $100 of labor invested with questionable outcome. Totally different cost level than an engine case. And it may have other issues such as corrosion pitting at the edge of the piston bore or wear where the brake lining bolts on.
Cliff
[quote] ---
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pitts_pilot(at)bellsouth.
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| Posted: Thu Nov 11, 2010 10:51 am Post subject: see the crack? |
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You probably won't see a leak until you get hard on the brakes a few times. Maybe heat affects it too. I've seen this fairly often on homebuilts ..... overtightening trying to get the fitting clocked like they want. They all leak.
Linn
On 11/11/2010 1:07 PM, Gary Vogt wrote: [quote] I bled the brakes and there is no leak. This plane, the Project X plane, has no wheel pants yet. I'll keep an eye on it.
From: flyv35b <flyv35b(at)minetfiber.com> (flyv35b(at)minetfiber.com)
To: teamgrumman-list(at)matronics.com (teamgrumman-list(at)matronics.com)
Sent: Thu, November 11, 2010 6:35:31 AM
Subject: Re: see the crack?
DIV { MARGIN:0px;} I guess you will be throwing the caliper away on this one!
[b]
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deej(at)deej.net
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| Posted: Thu Nov 11, 2010 10:57 am Post subject: see the crack? |
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On 11/11/2010 01:48 PM, Linn Walters wrote:
| Quote: | I've seen this fairly often on
homebuilts ..... overtightening trying to get the fitting clocked like
they want. They all leak.
|
Out of curiousity (because I'm about to start on the brake system on my
Sportsman), what is the proper way to tighten the fitting to get it
oriented in the direction you want?
Thanks,
-Dj
--
Dj Merrill - N1JOV
Glastar Sportsman 2+2 Builder #7118 N421DJ - http://deej.net/sportsman/
Please use Netiquette Guidelines http://tools.ietf.org/html/rfc1855
Kindly TRIM your email replies and post AFTER the relevant text
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teamgrumman(at)yahoo.com
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| Posted: Thu Nov 11, 2010 11:47 am Post subject: see the crack? |
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This is the first caliper I've ever seen that was cracked. I have 3 more calipers, but, they are so corroded they are unusable.
From: Linn Walters <pitts_pilot(at)bellsouth.net>
To: teamgrumman-list(at)matronics.com
Sent: Thu, November 11, 2010 10:48:51 AM
Subject: Re: see the crack?
You probably won't see a leak until you get hard on the brakes a few times. Maybe heat affects it too. I've seen this fairly often on homebuilts ..... overtightening trying to get the fitting clocked like they want. They all leak.
Linn
On 11/11/2010 1:07 PM, Gary Vogt wrote:
[quote][b]
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pitts_pilot(at)bellsouth.
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| Posted: Thu Nov 11, 2010 11:47 am Post subject: see the crack? |
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Proper???? I dunno, but I've used two approaches to clocking fittings.
1: I've used teflon paste if it's just a little loose.
2: I've used a tap to take a little more cut. I have ground the bottom
of the tap so it can get further down into the hole.
Linn
On 11/11/2010 1:55 PM, Dj Merrill wrote:
| Quote: |
On 11/11/2010 01:48 PM, Linn Walters wrote:
> I've seen this fairly often on
> homebuilts ..... overtightening trying to get the fitting clocked like
> they want. They all leak.
Out of curiousity (because I'm about to start on the brake system on my
Sportsman), what is the proper way to tighten the fitting to get it
oriented in the direction you want?
Thanks,
-Dj
|
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pitts_pilot(at)bellsouth.
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| Posted: Thu Nov 11, 2010 11:58 am Post subject: see the crack? |
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Probably due to professionals rather than amateurs working on certified stuff. You won't believe what I see in the homebuilt arena. It's scary. I've turned down a fair amount of 'rides' because I feared it may be my last. The "just a little tighter (snap or crush)" and "that's close enough" syndromes are rampant. I've seen builders put huge lightening holes in spar webs because it would save weight. May not save the pilot though.
Linn
On 11/11/2010 2:44 PM, Gary Vogt wrote: [quote] This is the first caliper I've ever seen that was cracked. I have 3 more calipers, but, they are so corroded they are unusable.
From: Linn Walters <pitts_pilot(at)bellsouth.net> (pitts_pilot(at)bellsouth.net)
To: teamgrumman-list(at)matronics.com (teamgrumman-list(at)matronics.com)
Sent: Thu, November 11, 2010 10:48:51 AM
Subject: Re: see the crack?
You probably won't see a leak until you get hard on the brakes a few times. Maybe heat affects it too. I've seen this fairly often on homebuilts ..... overtightening trying to get the fitting clocked like they want. They all leak.
Linn
On 11/11/2010 1:07 PM, Gary Vogt wrote: [b]
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deej(at)deej.net
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| Posted: Thu Nov 11, 2010 12:07 pm Post subject: see the crack? |
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On 11/11/2010 02:55 PM, Linn Walters wrote:
| Quote: | Probably due to professionals rather than amateurs working on certified
stuff.
|
I have to agree with this statement. I've seen more than one A&P that
scared the crap out of me at the quality of their work. I make it a
point to ALWAYS personally go over any work done by someone else on the
airplane, regardless of their paper credentials. After all, it is my
*ss on the line, not theirs, if the plane has a failure in flight.
-Dj
--
Dj Merrill - N1JOV
Glastar Sportsman 2+2 Builder #7118 N421DJ - http://deej.net/sportsman/
Please use Netiquette Guidelines http://tools.ietf.org/html/rfc1855
Kindly TRIM your email replies and post AFTER the relevant text
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garnerrice(at)hotmail.com
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| Posted: Thu Nov 11, 2010 12:07 pm Post subject: see the crack? |
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Got stacks of them with cracks. Special price on those. Nuttin a little JB weld cont fix<G>
Date: Thu, 11 Nov 2010 11:44:04 -0800
From: teamgrumman(at)yahoo.com
Subject: Re: see the crack?
To: teamgrumman-list(at)matronics.com
.ExternalClass DIV {;} This is the first caliper I've ever seen that was cracked. I have 3 more calipers, but, they are so corroded they are unusable.
From: Linn Walters <pitts_pilot(at)bellsouth.net>
To: teamgrumman-list(at)matronics.com
Sent: Thu, November 11, 2010 10:48:51 AM
Subject: Re: see the crack?
You probably won't see a leak until you get hard on the brakes a few times. Maybe heat affects it too. I've seen this fairly often on homebuilts ..... overtightening trying to get the fitting clocked like they want. They all leak.
Linn
On 11/11/2010 1:07 PM, Gary Vogt wrote: [quote] I bled the brakes and there is no leak. This plane, the Project X plane, has no wheel pants yet. I'll keep an eye on it.
From: flyv35b <flyv35b(at)minetfiber.com> (flyv35b(at)minetfiber.com)
To: teamgrumman-list(at)matronics.com (teamgrumman-list(at)matronics.com)
Sent: Thu, November 11, 2010 6:35:31 AM
Subject: Re: see the crack?
.ExternalClass DIV {;} I guess you will be throwing the caliper away on this one!
[quote] ---
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teamgrumman(at)yahoo.com
Guest
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| Posted: Thu Nov 11, 2010 12:21 pm Post subject: see the crack? |
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I don't know if there is a 'proper' way. Any lube, ( e.g., teflon tape, anti-seize, etc ) you put on the threads makes over tightening the fitting very easy. On-the-other-hand, not using a lube invites the possibility of galling the fitting.
I use the teflon tape; no more than two wrap layers. Then, I tighten until it's snug then add enough to get my position correct. My gauge for tightness is just enough so that it requires a wrench to loosen.
From: Dj Merrill <deej(at)deej.net>
To: teamgrumman-list(at)matronics.com
Sent: Thu, November 11, 2010 10:55:33 AM
Subject: Re: see the crack?
--> TeamGrumman-List message posted by: Dj Merrill <deej(at)deej.net (deej(at)deej.net)>
On 11/11/2010 01:48 PM, Linn Walters wrote:
| Quote: | I've seen this fairly often on
homebuilts ..... overtightening trying to get the fitting clocked like
they want. They all leak.
|
Out of curiousity (because I'm about to start on the brake system on my
Sportsman), what is the proper way to tighten the fitting to get it
oriented in the direction you want?
Thanks,
-Dj
--
Dj Merrill - N1JOV
Glastar Sportsman 2+2 Builder #7118 N421DJ - http://deej.net/sportsman/
Please use Netiquette Guidelines http://tools.ietf.org/html/rfc1855
Kindly TRIM your email replies and post AFTER
[quote][b]
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pitts_pilot(at)bellsouth.
Guest
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| Posted: Thu Nov 11, 2010 12:28 pm Post subject: see the crack? |
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The first annual on my Grumman after I bought it caused me to start
doing 'owner assisted annuals'. The A&P removed the B nut on the
electric pump ..... I guess to clean the screen ..... and the nut went
on finger tight. Having said that, I find most A&Ps to do professional
and quality work, although some lack the craftmanship they should have.
Doing all the wrenching myself leaves only me to blame when I don't hit
the level of craftmanship I strive for. Back in '74 when I had my
annual problem ..... I was pretty much ignorant about wrenching
airplanes, but I had good mentors. Also, building airplanes always
leaves you open to questions and criticism alike, but the knowledge I've
gained over the years has helped keep my butt in one piece.
Linn
On 11/11/2010 3:05 PM, Dj Merrill wrote:
| Quote: |
On 11/11/2010 02:55 PM, Linn Walters wrote:
> Probably due to professionals rather than amateurs working on certified
> stuff.
I have to agree with this statement. I've seen more than one A&P that
scared the crap out of me at the quality of their work. I make it a
point to ALWAYS personally go over any work done by someone else on the
airplane, regardless of their paper credentials. After all, it is my
*ss on the line, not theirs, if the plane has a failure in flight.
-Dj
|
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http://www.matronics.com/Navigator?TeamGrumman-List |
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pitts_pilot(at)bellsouth.
Guest
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| Posted: Thu Nov 11, 2010 12:36 pm Post subject: see the crack? |
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I try and stay away from Teflon tape due to the chance of some 'strings' getting into the system. It's easy to keep the tape off the first couple of threads on initial insertion, but when you R&R a fitting, some of the tape gets left down inside the hole and gets pushed on through when you put the fitting back in. I've used tweezers to try and clean up the mess tape leaves behind. The Teflon paste will typically 'dissolve' in fluids so it doesn't pose near the possibility of getting where it causes problems.
Linn
On 11/11/2010 3:15 PM, Gary Vogt wrote: [quote] I don't know if there is a 'proper' way. Any lube, ( e.g., teflon tape, anti-seize, etc ) you put on the threads makes over tightening the fitting very easy. On-the-other-hand, not using a lube invites the possibility of galling the fitting.
I use the teflon tape; no more than two wrap layers. Then, I tighten until it's snug then add enough to get my position correct. My gauge for tightness is just enough so that it requires a wrench to loosen.
From: Dj Merrill <deej(at)deej.net> (deej(at)deej.net)
To: teamgrumman-list(at)matronics.com (teamgrumman-list(at)matronics.com)
Sent: Thu, November 11, 2010 10:55:33 AM
Subject: Re: see the crack?
--> TeamGrumman-List message posted by: Dj Merrill <deej(at)deej.net (deej(at)deej.net)>
On 11/11/2010 01:48 PM, Linn Walters wrote:
> I've seen this fairly often on
> homebuilts ..... overtightening trying to get the fitting clocked like
> they want. They all leak.
Out of curiousity (because I'm about to start on the brake system on my
Sportsman), what is the proper way to tighten the fitting to get it
oriented in the direction you want?
Thanks,
-Dj
--
Dj Merrill - N1JOV
Glastar Sportsman 2+2 Builder #7118 N421DJ - http://deej.net/sportsman/
Please use Netiquette Guidelines http://tools.ietf.org/html/rfc1855
Kindly TRIM your email replies and post AFTER
[b]
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deej(at)deej.net
Guest
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| Posted: Thu Nov 11, 2010 12:38 pm Post subject: see the crack? |
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On 11/11/2010 03:15 PM, Gary Vogt wrote:
| Quote: |
I use the teflon tape; no more than two wrap layers. Then, I tighten
until it's snug then add enough to get my position correct. My gauge
for tightness is just enough so that it requires a wrench to loosen.
|
Sounds reasonable, thanks! That is essentially what I've done so far
on the master cylinder fittings. No cracks so far! *grin*
-Dj
--
Dj Merrill - N1JOV
Glastar Sportsman 2+2 Builder #7118 N421DJ - http://deej.net/sportsman/
Please use Netiquette Guidelines http://tools.ietf.org/html/rfc1855
Kindly TRIM your email replies and post AFTER the relevant text
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deej(at)deej.net
Guest
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| Posted: Thu Nov 11, 2010 12:44 pm Post subject: see the crack? |
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On 11/11/2010 03:30 PM, Linn Walters wrote:
| Quote: | I try and stay away from Teflon tape due to the chance of some 'strings'
getting into the system.
|
I've been using a product called "Fuel Lube" (also called EZ Turn)
instead of Teflon tape:
http://www.aircraftspruce.com/catalog/cspages/ezturnlube.php
-Dj
--
Dj Merrill - N1JOV
Glastar Sportsman 2+2 Builder #7118 N421DJ - http://deej.net/sportsman/
Please use Netiquette Guidelines http://tools.ietf.org/html/rfc1855
Kindly TRIM your email replies and post AFTER the relevant text
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