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Adell Clamps?

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rsrandazzo(at)precisionma
Guest

Posted: Tue Apr 11, 2006 1:39 pm Post subject: Adell Clamps?

WCG-



Fascinating- you guys are piecing together segments of information that I

have gleaned from reading everything in the airplane's document bag.  Saw

some references to Dick- and couldn't help but wonder what role 414C played.



Clearly the 685 is a bit underpowered when compared to the 690s, but I'm

certain taking a few hundred pounds off her will result in sound performance

improvements. 



You mentioned the Adell clamps, and Milt mentions fire-  can you guys give

me a quick education on this particular issue?    (Few things frighten me

more than fire... I've done 5 engine failures and one control failure in my

career- but the one that scared me most was a fire indication in a lav... I

hate fire.)



I think I very well might have to invite Morris up for a day or two to spend

with my guys.  They are a very capable organization who also knows when to

seek outside help.  I told them I'm planning to keep "Charlie" around here

awhile so they are making an investment in being able to provide service for

her.  



Robert Randazzo

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n395v

Joined: 10 Jan 2006
Posts: 450

Posted: Tue Apr 11, 2006 5:17 pm Post subject: Re: Adell Clamps?

The early 685s had faulty or substandard fuel lines and owners were loathe to replace them. The nacelle is tight and hot so they deteriorated rapidly. Several ruptured and spewed fuel all over those big ass blowers and you can guess the rest. If I am not mistaken this led to an SB or AD requiring replacing of all hoses every 3 calendar years.



Your airplane is solid and once you get it back up to snuff it will serve you well.

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_________________
Milt

CloudCraft(at)aol.com
Guest

Posted: Tue Apr 11, 2006 7:54 pm Post subject: Adell Clamps?

In a message dated 11-Apr-06 14:40:19 Pacific Daylight Time, 

rsrandazzo(at)precisionmanuals.com writes:

You mentioned the Adell clamps, and Milt mentions fire-  can you guys give

me a quick education on this particular issue? 

Robert,



Thanks for the opportunity to clear that up.  After I launched that email and 

went about my day, I realized I used the wrong name for the clamp I'm 

describing.  An Adell clamp is common and used to stand off tubes, wires and hoses.  

This is not what I'm talking about.



I will probably have to ask Morris the name -- unless Bill Leff is here and 

knows the answer -- but there is a stainless steel clamp that tightens with a 

screw, kind of like a spring tensioned super hose clamp but much larger and 

shaped with a groove if memory serves me well, that clamps down on the turbo and 

the exhaust stack.



One 685 I flew had one that was not able to tighten enough.  The symptom in 

the cockpit was a drop in manifold pressure.   The visual simptom was a pretty 

hairy exhaust streak coming out the nacelle door.   Scares me just to remember 

it.



Anyway, I remember being told that "There are none," when discussing 

replacing it as it was unique to the AC-685.



I'm sorry for being vague about something so important, but I can't recall 

the name.   Let's see .... it isn't a Sperthing Bearing, a Bellville washer or a 

hydrocoptic Marzel vane.  Isn't a transverse durakit .... not a retro 

encabulator ... 



Wing Commander Gordon



Life is not simple anywhere. Probably less so elsewhere.

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swperk(at)earthlink.net
Guest

Posted: Tue Apr 11, 2006 9:27 pm Post subject: Adell Clamps?

Is it called a "V-band clamp?" I've seen those used in other high

temp/high strength applications.



Stan Perkins

N681SP



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28bravo(at)comcast.net
Guest

Posted: Tue Apr 11, 2006 9:37 pm Post subject: Adell Clamps?

WCG:



That clamp is the ubiquitous Marmen clamp, commonly used to keep your 

"hairdryer" in place. It is a "V" band clamp that is prone to failure. It 

would be wise to safety wire these clamps with .040 stainless safety wire to 

prevent unwanted catastrophic leakage of exhaust gas. Also it is a good idea 

to remove them at least every annual and do a thorough visual inspection 

under magnification to check for cracks.



Dennis

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wjrhamilton(at)optusnet.c
Guest

Posted: Wed Apr 12, 2006 6:32 pm Post subject: Adell Clamps?

Guys,

Go easy on Bellville washers, many an aircraft

with a wooden prop has had all sorts of nasty

things happen with disintegrating/ departing

props or parts thereof, because they didn=92t

understand Bellville washers =96 Schnizzentight is

not always the way to go, indeed RTFM.

Perhaps you are thinking of Marmon clamps.

Cheers,

Bill Hamilton



At 13:53 12/04/2006, you wrote:

 	  Quote: 	
		  



In a message dated 11-Apr-06 14:40:19 Pacific Daylight Time,

rsrandazzo(at)precisionmanuals.com writes:

You mentioned the Adell clamps, and Milt mentions fire-  can you guys give

me a quick education on this particular issue?

Robert,



Thanks for the opportunity to clear that up.  After I launched that email and

went about my day, I realized I used the wrong name for the clamp I'm

describing.  An Adell clamp is common and used

to stand off tubes, wires and hoses.

This is not what I'm talking about.



I will probably have to ask Morris the name -- unless Bill Leff is here and

knows the answer -- but there is a stainless steel clamp that tightens with a

screw, kind of like a spring tensioned super hose clamp but much larger and

shaped with a groove if memory serves me well,

that clamps down on the turbo and

the exhaust stack.



One 685 I flew had one that was not able to tighten enough.  The symptom in

the cockpit was a drop in manifold

pressure.   The visual simptom was a pretty

hairy exhaust streak coming out the nacelle

door.   Scares me just to remember

it.



Anyway, I remember being told that "There are none," when discussing

replacing it as it was unique to the AC-685.



I'm sorry for being vague about something so important, but I can't recall

the name.   Let's see .... it isn't a Sperthing

Bearing, a Bellville washer or a

hydrocoptic Marzel vane.  Isn't a transverse durakit .... not a retro

encabulator ...



Wing Commander Gordon



Life is not simple anywhere. Probably less so elsewhere.






	




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