Letters and Miscellanies

APLCO clarification

| October 2006


I was enjoying the June 2006 issue of GEM when I happened upon mention of my name in the article regarding "Mysteries Continued," and the saga of the APLCO, Gray and Termaat & Monahan. Data was mentioned, supposedly on my website, regarding serial number "breakdown" for Gray engines, (in regards to the number "14H29" on the ALPCO) stating that my web pages indicate the 1 is for one horsepower, the 4 is for 4-cycle and the H29 is the serial number. For starters, the 14H29 is a casting number, not a serial number, and therefore, to the best of my knowledge, has nothing to do with horsepower and cycle designation.

Most all serial numbers found on Gray or T&M engines are stamped on the cylinder head edge, at about the 1 o'clock position.

Examples of some of these serial numbers are: 35234: This serial number breaks down as being a 2-1/2 HP, 4-cycle engine, with the serial number 523; 411914: 4 HP, 4-cycle, serial no. 1191; 4G2895: 4 HP, Model G, serial no. 2895; 2.5G3680: 2-1/2 HP, Model G, serial no. 3680.

I would dare to guess that the first two serial number examples are from Gray engines made by T&M, and the later, Gray engines made by Gray. I hope this clears things up somewhat.



Regarding the APLCO and OshKosh engines, I know nothing of their connection to T&M or Gray. I would love to know more, and of course I'm curious about the serial number of the APLCO in the article.

I think it would be a great public service to make it known that the Gray and Termaat serial numbers, if found, are on the edge of the head, and that the number on the hopper is a casting number. A lot of people have queried me regarding where to find the serial numbers on their Gray engines, as they're hard to find, often corroded, or painted over heavily. Thanks for the great magazine.



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