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  #1  
Old 11-19-2021, 09:19 AM
Kerry Pinkerton's Avatar
Kerry Pinkerton Kerry Pinkerton is offline
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Default Marchant 12 shrinker/stretcher with tooling

Posting for a friend.

Marchant 12A shrinker stretcher with tooling

Air powered Marchant shrinker stretcher with 12” throat depth and complete tooling package.

Everything is in excellent condition.

Probably cost in excess of $40,000 when new.

Includes the following tooling (all in nice condition, including stippling):

one pair of shrink tooling,

one pair of stretch tooling,

one pair of bulb angle shrink tooling

one pair of bulb angle stretch tooling.

Local pickup in Norcross, GA. I can help load onto your pickup or trailer. No shipping.

$10,950

Contact galtsgulch2@bellsouth.net

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Old 11-19-2021, 07:11 PM
crystallographic crystallographic is offline
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Quote:
Originally Posted by Kerry Pinkerton View Post
Posting for a friend.

Marchant 12A shrinker stretcher with tooling

Air powered Marchant shrinker stretcher with 12” throat depth and complete tooling package.

Everything is in excellent condition.

Probably cost in excess of $40,000 when new.

Includes the following tooling (all in nice condition, including stippling):

one pair of shrink tooling,

one pair of stretch tooling,

one pair of bulb angle shrink tooling

one pair of bulb angle stretch tooling.

Local pickup in Norcross, GA. I can help load onto your pickup or trailer. No shipping.

$10,950

Contact galtsgulch2@bellsouth.net

Attachment 61762

Attachment 61763

Attachment 61764

Attachment 61765

Attachment 61766

Attachment 61767

They might have sold for $bigbux back when new.
I know of a row of them for sale now.
1 tiny fyi problem has come up in the past few years: fatigue.
Over the decades of relentless chomping on hardened wing spars in the factories, the c-frames are showing stress fatigue in the throats.
A real bummer since no feasible/economical way to repair/weld them. And, no way to determine the usage hours.
If lucky, a lowtime unit may be found, but hard to tell, exactly.
A friend bought and set up a cecostamp drophammer earlier this year, a costly endeavor that was worth it since the big old thing had rested in the corner for many many long years, unused....AND The inspector / set-up tech who came in from long away confirmed the "youthful" condition....


Caveat Emptor, as I had rebuilt a March. 4A and sold it, only to have it serve another 5 yrs before fatigue-expiration, while doing non-stop triple-seven wing spars. Other 12A machines have subsequently gone "full service life."
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Last edited by crystallographic; 11-19-2021 at 07:14 PM.
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  #3  
Old 11-20-2021, 02:44 AM
Jaroslav Jaroslav is offline
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Yes, good cast iron is a big secret. The price of the manufacturer's machines in Europe corresponds to this. I haven't heard nothing of the end of machines life. They keep working.

But a good reminder.
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Old 11-20-2021, 06:40 AM
john galt john galt is offline
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I guess we all need to dump our old cast iron frame machines before they implode.

I’m not holding my breathe waiting for the market to be flooded with low cost “soon to be cracked” Yoders, Ercos, Pettingals, Marchants, etc.

In God we trust (and in 50 year old cast iron). Just my opinion (based upon my 63 years of restoration work). Your opinion may vary.
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Old 11-20-2021, 08:19 AM
Jaroslav Jaroslav is offline
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Ok, I didn't want to. My Machines 1936, 1971,1957. They have no problem with cast iron. Eckold. But terrible prices for individuals.
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Old 11-20-2021, 10:52 AM
crystallographic crystallographic is offline
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Quote:
Originally Posted by john galt View Post
I guess we all need to dump our old cast iron frame machines before they implode.

I’m not holding my breathe waiting for the market to be flooded with low cost “soon to be cracked” Yoders, Ercos, Pettingals, Marchants, etc.

In God we trust (and in 50 year old cast iron). Just my opinion (based upon my 63 years of restoration work). Your opinion may vary.

I'm no expert but I've seen my share of cracked/welded yoder/pettingell arms, in my work.

When using a cast C-frame to shrink 1/4in. hardened wing spars, using "elevated air pressures" and doing the operation day after day after ... in production, fatigue will happen. Decades simply take their toll. Many machines do not see this forced tonnage, by design....?


But maybe I hang around metallurgical engineers too much .....?
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  #7  
Old 11-20-2021, 01:23 PM
john galt john galt is offline
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Hardened 1/4" thick spar material? FWIW:

Marchant 12A MIL-S-45860C factory specifications are as follows:

2024: 5/32" thick
5052: 3/16" thick
Stainless: 3/32" thick
Titanium: 3/32" thick
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  #8  
Old 11-20-2021, 01:56 PM
Chris_Hamilton Chris_Hamilton is offline
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John is this your machine? Reason I ask is your username and the email both reference an Ayn Rand novel. If so curious as to why you had the Admin(Kerry) post the classified?
If it is yours, have you used it much? What else can you share about it?
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Last edited by Chris_Hamilton; 11-20-2021 at 01:58 PM.
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Old 11-20-2021, 07:05 PM
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Kerry Pinkerton Kerry Pinkerton is offline
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Yes it is his. John is a very talented guy but hasn't mastered posting photos here and asked me to post for him.
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Old 11-21-2021, 03:59 AM
john galt john galt is offline
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Hi Chris:
Thank you for your post - I'm happy to answer your questions!

Yes, this is my Marchant 12A. Ditto my moniker referencing the Atlas Shrugged novel.

At my age, "I'm a dinosaur with one foot in the tar pit". I haven't learned to post pics on this forum, so I asked Kerry (a long time friend who's internet savvy) to do it for me.

The answer to your question asking if I've used this 12A very much is: Yes, for many years. If it had any cracks or flaws I would divulge it.

Regarding your question about sharing any info about the machine: I've used it in general restoration work and to produce steel bucks and steel surface templates. I suspect this 12A probably came out of the aircraft industry or a related subcontractor.

FWIW: Caveat Emptor is alway a prudent policy. Given enough time and stupidity, any fool can overload a machine's structural design. However, I doubt that any member of this forum would ever intentionally or accidentally approach the design limits of this 12A machine. If working thicker materials, industry and aviation could buy Marchant's hydraulic 4H or 12H to shape up to 3/8" thick 5052, 1/4" thick 2024, 1/4" thick structural steel, etc.
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