Bob H
Joined: 01 Dec 2006
Posts: 43
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 Posted: Sat Apr 13, 2013 7:37 am Post subject: Pulsar-List Digest: 4 Msgs - 04/12/13 |
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Regarding gear repair from Palmer-
If fractures were confined to only the resin between fibers, you could
theoretically inject resin and repair gear. But cracking of structure
normally involves fracturing of internal fibers which can not be repaired by
resin. Once a fracture is started, subsequent loading will propagate it
along the path of least resistance which is the resin/fiber interface.
Repairing such a part might be possible by adding sufficient external plies
to carry loading and bypass the damage of original leg. This would increase
weight and without high quality inspection equipment, you are never sure if
the repair came out as intended.
Bob H
[quote] From: Pulsar-List Digest Server <pulsar-list(at)matronics.com>
Reply-To: <pulsar-list(at)matronics.com>
Date: Fri, 12 Apr 2013 23:58:20 -0700
To: Pulsar-List Digest List <pulsar-list-digest(at)matronics.com>
Subject: Pulsar-List Digest: 4 Msgs - 04/12/13
*
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Pulsar-List Digest Archive
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Total Messages Posted Fri 04/12/13: 4
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Today's Message Index:
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1. 03:57 PM - Damaged main gear (GREGSMI(at)aol.com)
2. 04:35 PM - Re: Damaged main gear (Larry Wheat)
3. 06:49 PM - Re: Damaged main gear (GREGSMI(at)aol.com)
4. 07:56 PM - Re: Damaged main gear (Keith Palmer)
________________________________ Message 1
_____________________________________
Time: 03:57:01 PM PST US
From: GREGSMI(at)aol.com
Subject: Damaged main gear
OK guys, seems no one has a glass gear for sale so I have decided to make a
good mold. Does anyone have a cracked gear I can use as a plug for the
mold? If not, does anyone have a gear I can borrow long enough to make the
mold?
Once I have the mold, I will be able to make gears for anyone that needs
one.
Thanks
Greg Smith
________________________________ Message 2
_____________________________________
Time: 04:35:21 PM PST US
Subject: Re: Damaged main gear
From: Larry Wheat <lwheat2083(at)gmail.com>
Just out of curiosity what happened to the gear? Something maybe we should
look for on our inspections? What is the glass makeup you would use on the
new gear. Thanks in advance for any input. Cheers, Larry N852LW
On Fri, Apr 12, 2013 at 3:55 PM, <GREGSMI(at)aol.com> wrote:
> **
> OK guys, seems no one has a glass gear for sale so I have decided to make
> a good mold. Does anyone have a cracked gear I can use as a plug for the
> mold? If not, does anyone have a gear I can borrow long enough to make the
> mold?
>
> Once I have the mold, I will be able to make gears for anyone that needs
> one.
>
> Thanks
> Greg Smith
>
> *
>
> *
>
>
--
Larry Wheat
________________________________ Message 3
_____________________________________
Time: 06:49:45 PM PST US
From: GREGSMI(at)aol.com
Subject: Re: Damaged main gear
In the case I am working on, it appears the gear was damaged upon a high
speed touch down with the brakes on, causing vertical cracks radiating from
the axle plate. This may be repaired with 45 degree wraps of carbon fiber
but I want a way to replace glass gears in the future. I am a firm believer
in the glass gear for the Pulsar. I plan to talk about this at the Pulsar
reunion.
Greg
In a message dated 4/12/2013 6:35:43 P.M. Central Daylight Time,
lwheat2083(at)gmail.com writes:
Just out of curiosity what happened to the gear? Something maybe we should
look for on our inspections? What is the glass makeup you would use on the
new gear. Thanks in advance for any input. Cheers, Larry N852LW
On Fri, Apr 12, 2013 at 3:55 PM, <_GREGSMI(at)aol.com_
(mailto:GREGSMI(at)aol.com) > wrote:
OK guys, seems no one has a glass gear for sale so I have decided to make
a good mold. Does anyone have a cracked gear I can use as a plug for the
mold? If not, does anyone have a gear I can borrow long enough to make the
mold?
Once I have the mold, I will be able to make gears for anyone that needs
one.
Thanks
Greg Smith
arget="_blank">http://www.matronics.com/Navigator?Pulsar-List
tp://forums.matronics.com _blank">http://www.matronics.com/contribution
--
Larry Wheat
________________________________ Message 4
_____________________________________
Time: 07:56:32 PM PST US
From: "Keith Palmer" <kdpalmer(at)mweb.co.za>
Subject: Re: Damaged main gear
Greg,
You mentioned your cracked gear could be repaired - couldn't
you epoxy and clamp it together, then clean it up for mould purposes ?
Keith
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