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Official Minneapolis Threshing Machine Company Thread


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  #1  
Old 02-13-2010, 02:55:26 PM
A Martinson A Martinson is offline
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Use this thread as the central location for discussion on the subtle differences on MTMC tractors of different years and any other MTMC stuff.

22-44


20-40


Single speed 35-70


40-80
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Old 02-13-2010, 03:09:17 PM
A Martinson A Martinson is offline
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This tractor is referred to only as the "Farm Motor" in literatureI have, but it later evolved into the 25-50 model. If someone has a scan of the 25-50 that they could post, that would be great.


20-40 Engine


Early 40-80 Engine


Late 40-80/35-70 Engine
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Old 02-13-2010, 03:26:21 PM
AultmanTaylor AultmanTaylor is offline
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Default Re: Official Minneapolis Threshing Machine Company Thread

Hi

Very nice pictures!
One thing: are you sure you didn't mix up the 40-80 and 35-70?
The reinforcement going to the front axle in your pictures on the 35-70 is flat and on the 40-80 it's down like most of the MTM's.
We have a 35-70 which originally was a 40-80 which has the reinforcement flat. Since it is broken on ours I think that it were the earlier ones that had it flat.

regards
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Old 02-13-2010, 03:31:44 PM
A Martinson A Martinson is offline
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Default Re: Official Minneapolis Threshing Machine Company Thread

I'm sure I didn't mix them up, but that doesn't mean the images are 100% correct in the first place.

The reinforcement looks the same on our 40-80, which was bought new in 1918, #1299 as in the drawing.

http://oldironzone.com/prairietracto...eapolis_40-80/
Here are some more pictures of our 40-80
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Old 02-13-2010, 04:39:50 PM
AultmanTaylor AultmanTaylor is offline
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Default Re: Official Minneapolis Threshing Machine Company Thread

hi

It's just strange that all the 35-70's and all the 40-80's we've seen have the reinforcement like that. Execpt for the 35-70's that are re-rated 40-80's with an R in front of the serial number.
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Old 02-13-2010, 04:51:53 PM
A Martinson A Martinson is offline
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Default Re: Official Minneapolis Threshing Machine Company Thread

Quote:
It's just strange that all the 35-70's and all the 40-80's we've seen have the reinforcement like that. Execpt for the 35-70's that are re-rated 40-80's with an R in front of the serial number.
They may have only used that type of reinforcement for a short time as I have also seen remanufactured 40-80s with the angled reinforcement.
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Old 02-13-2010, 07:38:12 PM
AultmanTaylor AultmanTaylor is offline
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Default Re: Official Minneapolis Threshing Machine Company Thread

It definitely wasn't good construction. Ours is broken.
I think that the first ones were like ours because a 25-50 has it flat as well. Maybe the ad of the 35-70 is a remanufactured one
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Old 02-13-2010, 07:53:35 PM
A Martinson A Martinson is offline
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Default Re: Official Minneapolis Threshing Machine Company Thread

At Jeff Jacobsen's website http://tractorhorn.tripod.com/ there is an even earlier one that also has the diagonal bracing.



This is the tractor that turned into the 25-50, and it also has diagonal bracing.

What is your tractors SN?

Last edited by A Martinson; 02-13-2010 at 10:22:48 PM.
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Old 02-14-2010, 06:45:12 PM
Mike Harmeling Mike Harmeling is offline
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Default Re: Official Minneapolis Threshing Machine Company Thread

Here's a representative of the 30-50/39-57.

Mike
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About the only change in them seems to be the rating on the serial number plate after the Nebraska tests.
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Old 02-14-2010, 07:57:53 PM
AultmanTaylor AultmanTaylor is offline
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Default Re: Official Minneapolis Threshing Machine Company Thread

Quote:
Originally Posted by A Martinson View Post

What is your tractors SN?
The number is R1637. It has the double ignition, 2 spark plugs per cyl and a closed governer.
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