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Re: A-C SP-40 All Crop self-propelled combine

David, I have honestly NEVER even heard of any self-propelled Model 40 All Crop. The ONLY SP All Crop I have seen or even read about, was the Model 100. The 100 is basically a Model 90 made into an SPC, powered by a Wisconsin gas engine.

There was a Model 40, but it was only a pull-type. It was NOT the first All Crop, either. In fact, the Model 40 was a stab at the straight-through design market, after the fashion of the M-H Clipper, J.D. 10-12-A and such, but real Allis-Chalmers combine buyers wanted the TRUE All Crop with its L-shaped configuration. As a result, only a small amount of the 3' cut or so Model 40's were made. Yes, all the 40's are now sought after by collectors.
 

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Re: A-C SP-40 All Crop self-propelled combine

Ahah! Now that confirms BOTH of our stories. No, it was not made that way by Allis-Chalmers, but most definitely an SP Model 40!


Three out of only five built, is an amazing track record. I just wish one Model 10 John Deere still existed. Only ten were built.
 

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Re: A-C SP-40 All Crop self-propelled combine

allis -chalmers made the 40 pull-type only from 1938-1940. the john deere 12-a is the prototype 60 straight through machine that they tried , but it failed in the field trials and all blueprints and tooling was sold to john deere.
 

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sp 40

I have seen a picture of a sp 40 in a book somewhere. I think it was modified by a seed company for work in seed plots. Neat looking machine.
 

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allis -chalmers made the 40 pull-type only from 1938-1940. the john deere 12-a is the prototype 60 straight through machine that they tried , but it failed in the field trials and all blueprints and tooling was sold to john deere.
I would like to know were you got the info because I think you are completely wrong.
 

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Yes, there was a sp 40 all crop

There was a self propelled 40 all crop made.

Was it officially made by AC, well no....
It has a standard 40 with a AC "G" drive train mounted on top.
Somebody's special project, kind of neat though.

Here is a link to photos, wait for the page to load and scroll to the bottom
This unit sold in 2008 at auction.

Aumann Auctions, Inc. - Mrotek Allis Chalmers Collection
 

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The model 40 was only a pull type. Some were made into a SP by universities for plot use. The JD 12/12A is an Allis Chalmers prototype 60 combine. It was a straight through design of the 60 all crop,but field performance didn't match the production 60. The prototype and all tooling were sold to John Deere.
 

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From Norm swinford personally. I spent a whole afternoon talking to the gentleman at an A-C show I helped at in Davis, I'll. He also sent me pictures of the two prototypes of the two straight through machines Allis was working on in '58-'59. The new model 90 and the SP110 jd95guy.
 
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