Today's Message Index:
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1. 04:23 AM - Plenum vs engine lifting rings (Ralph E. Capen)
2. 07:59 AM - Re: Plenum vs engine lifting rings (Hopperdhh@AOL.COM)
3. 08:18 AM - Re: Plenum vs engine lifting rings (Ralph E. Capen)
4. 08:37 AM - Re: Plenum vs engine lifting rings ()
5. 09:28 AM - Solved: Plenum vs engine lifting rings (Ralph E. Capen)
Message 1
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| Subject: | Plenum vs engine lifting rings |
Folks,
I am starting the work on my cowl/plenum. Looks like I'll need to remove the lifting
rings from the top of the engine. The bolts are too long to just put back
in and a 4-15 would fit nicely. The issue that I am seeing is that the original
bolts are coarse thread - and I can't figure out what to order - or from
where for that matter.
Any guidance would be appreciated,
Ralph
Message 2
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| Subject: | Re: Plenum vs engine lifting rings |
Ralph,
You can order the bolts from Aircraft Specialties. They would probably be
glad to look the part number up for you. Truth be told, I don't think some
bolts from the hardware store or NAPA would hurt a thing. Uh oh, I better go find
my nomex underwear!
Dan Hopper
RV-7A
In a message dated 5/7/2007 7:24:33 AM Eastern Standard Time,
recapen@earthlink.net writes:
<recapen@earthlink.net>
Folks,
I am starting the work on my cowl/plenum. Looks like I'll need to remove the
lifting rings from the top of the engine. The bolts are too long to just put
back in and a 4-15 would fit nicely. The issue that I am seeing is that the
original bolts are coarse thread - and I can't figure out what to order - or
from where for that matter.
Any guidance would be appreciated,
Ralph
************************************** See what's free at http://www.aol.com.
Message 3
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| Subject: | Re: Plenum vs engine lifting rings |
Thanks for the tip....I'll give aircraft specialties a look see!
Other educated sources say that a coarse grade 8 bolt is sufficient as you have
indicated - fine thread may allow too much torque nd possibly crack the case.
-----Original Message-----
>From: Hopperdhh@aol.com
>Sent: May 7, 2007 10:59 AM
>To: lycomingengines-list@matronics.com
>Subject: Re: LycomingEngines-List: Plenum vs engine lifting rings
>
>
>
>Ralph,
>
>You can order the bolts from Aircraft Specialties. They would probably be
>glad to look the part number up for you. Truth be told, I don't think some
>bolts from the hardware store or NAPA would hurt a thing. Uh oh, I better go
find
>my nomex underwear!
>
>Dan Hopper
>RV-7A
>
>
>In a message dated 5/7/2007 7:24:33 AM Eastern Standard Time,
>recapen@earthlink.net writes:
><recapen@earthlink.net>
>
>Folks,
>
>I am starting the work on my cowl/plenum. Looks like I'll need to remove the
>lifting rings from the top of the engine. The bolts are too long to just put
>back in and a 4-15 would fit nicely. The issue that I am seeing is that the
>original bolts are coarse thread - and I can't figure out what to order - or
>from where for that matter.
>
>Any guidance would be appreciated,
>Ralph
>
>
>************************************** See what's free at http://www.aol.com.
>
>
Message 4
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| Subject: | Re: Plenum vs engine lifting rings |
Just a heads up,
I'm not sure how critical 1 or 2 bolts in the top of the crankcase are but I would
be concerned about the higher probability of counterfeit bolts at a hardware
store selling non-AN or non mil-psec hardware.
Counterfeit bolts:
http://www.anl.gov/Media_Center/Argonne_News/2005/an050411.htm#story3
. The counterfeit bolts are marked as being a certain grade, he explained, but
in reality "they are a lower strength than what's needed to do the job." Lagessie
replaced the counterfeit bolts and brought them to the attention of his division's
Quality Assurance representative.
Lagessie said his concern about safety and counterfeit materials is driven by an
incident that occurred while he was serving in the U.S. Navy: A counterfeit
bolt broke loose from a catapult a powerful device used to launch aircraft from
carriers _ and struck a crewmember, killing him instantly.
http://www.businessweek.com/1996/24/b34791.htm
LOOSE BOLTS. Outside the U.S., the picture is even more troubling. Crashes include
a Convair 580 belonging to Norway's Partnair charter airline, which disintegrated
22,000 feet over the North Sea in 1989, killing all 55 people aboard.
The cause? Counterfeit bolts and bushings in the plane's tail, according to Norwegian
aviation officials. Investigators, who were able to reassemble the wreckage
in a hangar, said the plane's tail shimmied violently as the bolts came
loose--and fell off in midair. Lawyers for the now-defunct airline deny the bogus
parts caused the crash.
Message 5
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| Subject: | Solved: Plenum vs engine lifting rings |
The folks at Barrett Precision Engines called me and took care of exactly what
I needed.
Excellent way to run a business!
-----Original Message-----
>From: "Ralph E. Capen" <recapen@earthlink.net>
>Sent: May 7, 2007 7:22 AM
>To: lycoming engine list <lycomingengines-list@matronics.com>, James Acft list
<JamesAircraft@yahoogroups.com>
>Subject: LycomingEngines-List: Plenum vs engine lifting rings
>
>
>Folks,
>
>I am starting the work on my cowl/plenum. Looks like I'll need to remove the
lifting rings from the top of the engine. The bolts are too long to just put
back in and a 4-15 would fit nicely. The issue that I am seeing is that the original
bolts are coarse thread - and I can't figure out what to order - or from
where for that matter.
>
>Any guidance would be appreciated,
>Ralph
>
>
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