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Mike Matthiesen
New member
Username: grandpas_toys
Post Number: 3
Registered: 02-2008
| | Posted on Monday, February 11, 2008 - 09:48 pm: | 
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Can you help me with the engine year and model of this Termatt Thank you} |
RichardDurgee
Senior Member
Username: richarddurgee
Post Number: 1597
Registered: 11-2001
| | Posted on Tuesday, February 12, 2008 - 02:24 pm: |
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Mike could you post a photo of the intake side of the engine ?
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Mike Matthiesen
Member
Username: grandpas_toys
Post Number: 4
Registered: 02-2008
| | Posted on Tuesday, February 12, 2008 - 07:47 pm: |
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Here is another pic to get the full side It will take me a couple of days until I get back home to take more pictures Thank you Richard for your help |
RichardDurgee
Senior Member
Username: richarddurgee
Post Number: 1598
Registered: 11-2001
| | Posted on Tuesday, February 12, 2008 - 08:32 pm: |
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These were the new style engines for Termaat & Monahan with the cast wet exhaust originally called a condenser, they came on the market in late 1905, the condenser was patented in 1906. The early engs had the lever timers, these specs are from a 1906 catalog. No model names, engs were seperated by their Horse power, by 1907 the Hp were 2,3 and 5 up a bit from 1906 but the same engs.
I like the Mica Spark Plug they were commonly used in 1906 !
1906 T & M Specs
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Mike Matthiesen
Member
Username: grandpas_toys
Post Number: 5
Registered: 02-2008
| | Posted on Tuesday, February 12, 2008 - 09:56 pm: |
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Thanks again for your help |
RichardDurgee
Senior Member
Username: richarddurgee
Post Number: 1599
Registered: 11-2001
| | Posted on Wednesday, February 13, 2008 - 09:10 am: |
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Termaat & Monahan
This is a rare ad December 1905 in color!
1905
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Mike Matthiesen
Member
Username: grandpas_toys
Post Number: 6
Registered: 02-2008
| | Posted on Wednesday, February 13, 2008 - 10:34 am: |
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That sure looks like it that is a really neat ad
Thank you so much |
RichardDurgee
Senior Member
Username: richarddurgee
Post Number: 1600
Registered: 11-2001
| | Posted on Wednesday, February 13, 2008 - 01:47 pm: |
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The engine in the ad is the small 1 1/2 hp I think your eng will be one of the larger ones because of the general profile. let us Know !
Many Companies used this design and exhaust casting I call them the Jefferson Avenue (Detroit) engines because that seems to be the source, Here is a 1907 Caille Perfection ad-- its no wonder we can"t tell some of these engs apart unless they have the Tag ??
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John Davis
Senior Member
Username: johnny
Post Number: 151
Registered: 03-2006
| | Posted on Thursday, February 14, 2008 - 07:03 am: |
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"Jefferson Avenue Engines" I'm not sure about the Termatt & Monahan engines or the Caille Perfection engines but on the Detroit, Columbia, Sandow, Michigan Steel boat marine engines you can identify the early made engines from the late model engines by two features. The inspection hole and the counter balance holes in the flywheels. Early model engines have a small round pipe plug for the inspection hole and the flywheels are not counter balanced at all. Later model engines have a larger square inspection plate with four bolts holding it on and the flywheel is counter balanced. Just thought someone might like to know. |
RichardDurgee
Senior Member
Username: richarddurgee
Post Number: 1601
Registered: 11-2001
| | Posted on Thursday, February 14, 2008 - 09:29 am: |
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John- About what year did these changes take place ?
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John Davis
Senior Member
Username: johnny
Post Number: 153
Registered: 03-2006
| | Posted on Friday, February 15, 2008 - 06:59 am: |
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I don't know the exact date or year. However I believe the square inspection covers started showing up in literature around the 1907,1908 time period and most of these engines have the counter balance in the flywheel. Engines with the threaded inspection plug do not have the counter balanced flywheel. However I'm sure there are probably a few exceptions. |
Barry Millar
Senior Member
Username: barry
Post Number: 62
Registered: 02-2006
| | Posted on Friday, February 15, 2008 - 11:05 am: |
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Here is the 1906 Monahan patent. It's both interesting and educational.
Barry
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Mike Matthiesen
Member
Username: grandpas_toys
Post Number: 7
Registered: 02-2008
| | Posted on Friday, February 15, 2008 - 06:10 pm: |
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 Richard here is the other picture you asked for I did a little measuring and the numbers matched the 2 1/2 hp thanks again for all your information John and Barry Thank you also, I liked the patent info |
Mike Matthiesen
Member
Username: grandpas_toys
Post Number: 8
Registered: 02-2008
| | Posted on Friday, February 15, 2008 - 06:26 pm: |
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One other thing would the green be the propper color for this engine |
RichardDurgee
Senior Member
Username: richarddurgee
Post Number: 1606
Registered: 11-2001
| | Posted on Friday, February 15, 2008 - 06:56 pm: |
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This is a 1907-09 Termaat with original paint, the color on the upper part of the cylinders is the most accurate.
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John Davis
Senior Member
Username: johnny
Post Number: 154
Registered: 03-2006
| | Posted on Friday, February 15, 2008 - 08:01 pm: |
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This engine has the square inspection covers. Do you know if the flywheel or crank has counter balance? Being a two cylinder and the pistons firing 180 degrees apart helps the engine to run a little smoother even if it doesn't have a counter balance. |
RichardDurgee
Senior Member
Username: richarddurgee
Post Number: 1609
Registered: 11-2001
| | Posted on Friday, February 15, 2008 - 08:38 pm: |
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I did a liitle research and 1905-06 singles had the threaded inspection port and by 1907 had gone to the square 4 bolt plate, the balanced flywheels and upped the Hp ratings. The multi-cylindered engine always had square or round inspection plates !
1906 twin
1906 bIG 30 Hp twin with round inspection covers.
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RichardDurgee
Senior Member
Username: richarddurgee
Post Number: 1610
Registered: 11-2001
| | Posted on Sunday, February 17, 2008 - 10:56 am: |
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Termaat & Monahan engine early 1905 before the patented condenser design change.
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