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Antique Steel Wheel Tractors - Old Iron Lugs and Cleats

Twin City 20-35 Prototype?


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  #1  
Old 01-09-2016, 12:53:22 PM
Mark Schneider Mark Schneider is online now
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Default Twin City 20-35 Prototype?

I have a question about this picure that is in the book "Twin City Tractor Photo Archive" by P.A. Letourneau. The picture shows a storage room filled with early 12-20 Twin City tractors. But the tractor in the foreground is not a 12-20. The fuel tank and saddle look like 20-35 parts to me. But then on the motor there is an early "12-20 style" intake manifold with a Pierce governor assembly. Also note the unique hand hole covers on the block.

If this is a 20-35 some of these parts do not show up in the 1924 repair parts list No. R-721. However the engine physically looks too tall and the hood too long to be 12-20 stock.

Any insights?
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Old 01-09-2016, 06:44:21 PM
Jeff Blaney Jeff Blaney is offline
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Default Re: Twin City 20-35 Prototype?

It is very possible. From what I understand the 20-35 was still in the design stages throughout the late teens and was finally made available to the public in 1920 (the same year the photo was supposedly taken).

It is difficult to tell due to the tractor being in the foreground and its bottom half out of the frame. Those monster front wheels would give it away instantly. From my perspective it does look larger than the 12-20's pictured behind it, especially when you consider the gas tank and height of the fenders.

Awesome observation by the way. I've studied that picture many times and never picked up on this.
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Old 01-09-2016, 11:43:02 PM
Mark Schneider Mark Schneider is online now
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Default Re: Twin City 20-35 Prototype?

Yes that intake manifold does throw a guy for a loop. A person automatically assumes that it's an early 12-20. However on the 12-20's and 17-28's most of the steering wheel and the top part of the brake lever can be seen over the top of the fenders from a side view. On a 20-35 only the top portion of the steering wheel can be seen. The controls are clearly in the right spot for this to be the first of the big twin cams.
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Old 01-10-2016, 01:19:48 AM
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Default Re: Twin City 20-35 Prototype?

I wonder what that one used for valve lubrication? There are no oilers visible through the hood as there are on all the 12-20s in the picture. I also think that this may be a 20-35 prototype due to it's size and already mentioned features..
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Old 01-10-2016, 08:47:20 AM
Stuart Landry Stuart Landry is offline
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Default Re: Twin City 20-35 Prototype?

Looks like 20-35 size tractor,
As the bottom tank of radiator is cast with the engine support frame ,i think the smaller TC tractors have a separate bottom radiator tank ?
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Old 01-10-2016, 10:47:49 AM
Tony Thompson Tony Thompson is offline
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Default Re: Twin City 20-35 Prototype?

Mark,
You are definitely a detail oriented person!
I got my first photo archive book in 1994 and studied it so hard under bright light and magnifying glass that I wore it to pieces and had to get another copy.

You are correct, that is an early short fender 20-35.
The block and head set are very different in much more than size between the big and little tractors. The first 20-35's appeared along with the TC trucks (there is one sitting behind the big TC) and had rear wheels with a rolled edge like 12-20's.
The books were a great photo source, however, they had painfully incorrect text that did not even match some of the photos...that photo may have been taken in 1919?
Tony
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