Matronics Email Lists :: View topic - Plenum vs engine lifting rings

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

Plenum vs engine lifting rings

Matronics Email Lists Forum Index -> LycomingEngines-List

View previous topic :: View next topic

Author Message

recapen(at)earthlink.net
Guest

Posted: Mon May 07, 2007 3:23 am Post 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

- The Matronics LycomingEngines-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?LycomingEngines-List

Hopperdhh(at)AOL.COM
Guest

Posted: Mon May 07, 2007 6:59 am Post subject: 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(at)earthlink.net writes:


<recapen(at)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.

- The Matronics LycomingEngines-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?LycomingEngines-List

recapen(at)earthlink.net
Guest

Posted: Mon May 07, 2007 7:18 am Post subject: 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.



--

- The Matronics LycomingEngines-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?LycomingEngines-List

Discover

Joined: 26 Feb 2007
Posts: 429

Posted: Mon May 07, 2007 7:37 am Post subject: 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.

- The Matronics LycomingEngines-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?LycomingEngines-List

Display posts from previous:

	Matronics Email Lists Forum Index -> LycomingEngines-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum