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Schramm Tow-behind Air Compressor


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  #1  
Old 08-27-2011, 08:23:26 AM
ace3880 ace3880 is offline
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Default Schramm Tow-behind Air Compressor

I have a very old Schramm believe 125cfm Towbehind Air compressor. Has 2 4 cylinder engines. One runs and the other pumps air. This thing works great,except for the unloader needs adjusted to come on and off. I have no information on this. Looks simple enough. But don't want to make it worse.

So if anyone can help me with information or direction that would be great.

Thank you Doug
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  #2  
Old 08-27-2011, 06:21:57 PM
Bud Tierney Bud Tierney is offline
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Default Re: Schramm Towbehind Air Compressor

Well, Schramm used all kinds of engines, if you don't have any engine ID already; some they gave their own designations to, like COUH,DOUH etc...I've not found a conversion list, but I haven't looked much, either.
I've two notes on Schramm:
A longtime Schramm expert Sam Hardgrove at samhardgrove@gmail.com...
Parts/info: Lena's Warehouse Parts, Ft Worth, TX 817-370-2039.
Both are probably several years old; it looks like Frank McBride, another longtime Schramm guru who's gone to his reward, was at Lena's.
You might search Schramm in the archives here; should turn up other owners that could be helpful. Good luck.
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Old 08-28-2011, 12:03:53 PM
RSCurtis RSCurtis is offline
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Default Re: Schramm Towbehind Air Compressor

A friend of mine has a 1951 105 towable that I've worked on extensively. It had the Schramm engine with 3 cylinders for power and 3 for air. AFAIK, a 125 will use the same set-up, but with possibly more sophisticated controls. Unfortunately, I don't believe many parts are still available. The compressor division was sold to PEECO, a division of Ditch Witch of New Jersey at the time. A very good machine in its day, but it couldn't pass a gas station without stopping if you know what I mean.
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Old 08-29-2011, 10:01:07 PM
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Jim Arras Jim Arras is offline
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Default Re: Schramm Towbehind Air Compressor

Bud, Frank owned Lena's wharehouse, he passed in 2006. Sam took over the business til this June when I took over.

Doug, Give me a call or send me a message on here, I have manuals and parts.

Jim Arras 419 722 0774
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Old 08-29-2011, 11:20:38 PM
Bud Tierney Bud Tierney is offline
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Default Re: Schramm Towbehind Air Compressor

Jim: Is there any conversion or ID table online saying what stock engines Schramm designated their "COUH" ,DOUH",etc??
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Old 08-30-2011, 11:27:33 AM
RSCurtis RSCurtis is offline
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Default Re: Schramm Towbehind Air Compressor

I don't believe those were "stock" engines. They were Schramm built engines just for their use. Some of the smaller machines were based on air cooled Wisconsins, but the liquid cooler versions used their dedicated engine. Larger Schramm's used a separate Schramm compressor driven by different prime movers of the day.

Gordon Smith, OTOH, used popular automotive engines in their compressors, from a Chrysler IND32 up to the later Ford V8's. Lindsay at one time even used a small block Chrysler V8, but it didn't have the smooth alternate bank firing order that the Ford does, and ran with an uneven sound.
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Old 09-01-2011, 10:32:08 PM
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Default Re: Schramm Towbehind Air Compressor

Those was Schramm designed engines. They did use some Ford engines, the Flathead V8 was used for many years. Wisconsins was used also, some was run on 2 compress on 2, others was compress on all 4 with another power source.

Jim
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Old 11-19-2018, 10:04:44 AM
oakjcm oakjcm is offline
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Default Re: Schramm Towbehind Air Compressor

Hi Jim, Do you have and external air cleaner for a schramm 35 in your parts
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Old 11-19-2018, 06:02:19 PM
FarmallBob FarmallBob is offline
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Default Re: Schramm Tow-behind Air Compressor

Can't help with the compressor control issue. However this is somewhat related to the Schramm engine source question:

I spotted this interesting self-propelled Schramm compressor at a show last summer. Powerplant is a is a 298 cubic inch, 6 cylinder International truck engine. It was also used in the McCormick-Deering W40 farm tractor. The compressor is a 2nd identical IHC 298 truck block direct connected to the engine, but with the head modified to work as a compressor.

The owner shared that as a tractor the machine is marginal at best. And it is a pig on gas. But unlike a tow-behind compressor, the big Schramm can get itself around a jobsite unassisted. And it can make a LOT of air in a hurry!

...FB
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Old 11-19-2018, 11:29:31 PM
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Jim Arras Jim Arras is offline
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Default Re: Schramm Tow-behind Air Compressor

Farmallbob, That is a 300 Pneumatractor, 300 cfm at 100 psi unless it’s a high pressure unit. The compressor block is a Schramm block, not IHC, most of them ran a Schramm engine as well, but some had other males in them.

Jim
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Old 11-20-2018, 01:28:49 PM
FarmallBob FarmallBob is offline
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Default Re: Schramm Tow-behind Air Compressor

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Originally Posted by Jim Arras View Post
Farmallbob, That is a 300 Pneumatractor, 300 cfm at 100 psi unless it’s a high pressure unit. The compressor block is a Schramm block, not IHC, most of them ran a Schramm engine as well, but some had other males in them.

Jim
Thanks for the info Jim - I was misled by the similarity between the IHC engine and Schramm compressor blocks.

Here's another interesting Schramm tow behind. It has been a regular at the Pageant of Steam (Canandaigua, NY) for many years.

It incorporates 6 cylinder Buda flathead engine coupled to a 6 cylinder compressor. The compressor section looks suspiciously like a Schramm-modified Buda block, but now I am not certain(!)

Somewhere I have a video of the compressor in operation. It's fascinating to watch the unloader cycling the compressor section and modulating engine RPM.

...FB
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  #12  
Old 11-20-2018, 09:49:42 PM
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Default Re: Schramm Tow-behind Air Compressor

That's the identical model we have. I need to find an operating book for it as I don't have any info on how it operates.
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Old 11-20-2018, 11:39:54 PM
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Default Re: Schramm Tow-behind Air Compressor

Farmallbob,

Just guessing, can’t tell for sure but looks like a 375? Serial number I could tell you what it is.

FWurth,

Get me a serial number, most likely I would have a book for it.
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Old 11-21-2018, 12:16:29 AM
FarmallBob FarmallBob is offline
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Default Re: Schramm Tow-behind Air Compressor

Quote:
Originally Posted by Jim Arras View Post
Farmallbob,

Just guessing, can’t tell for sure but looks like a 375? Serial number I could tell you what it is.

FWurth,

Get me a serial number, most likely I would have a book for it.
Jim/FWurth - The compressor is part of the collection of NY Steam Engine Association (the "Pageant of Steam"). After the Thanksgiving holiday I'll get in touch with them and see if I can get the unit's S/N or obtain a copy of the manual.

...FB
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Old 05-23-2019, 01:56:43 AM
IdahoSalvage
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Default Re: Schramm Tow-behind Air Compressor

I am currently parting out a Schramm compressor that has a UD18 International Gas-Diesel as its power plant.
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