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doug11k
Member
Username: doug11k
Post Number: 12
Registered: 12-2003
| | Posted on Thursday, September 15, 2005 - 08:22 pm: | 
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Recently acquired an early small 2-cycle I think is a Truscott., 3" bore & 3" stroke, flywheel 9 1/2" x 2 1/4" for 7/8" shaft. 1" npt exhaust, four 1/4" npt water holes, two should be plugged, missing brass or copper jacket around cyl. External intake port with a valve & flat top piston with no deflector. Valve cap is 1 3/8" fine thread & tapped hole outboard of cap is threaded 3/8" npt into valve chamber with a concentric 1/4" hole thru floor of valve chamber lining up with shaft between flywheel hub & base casting. Missing timer & water pump. Essex mixer missing needle valve, not sure if mixer is original equipment. Also not sure if spark plug is original or if it should have stationary ignitor contact in 3/8" npt hole outboard of valve. Similar to 1899 patent drawings posted by Andrew in 2002 under 4-cycle Truscott post below. My engine varies from patent drawings in several respects so must be an improved model .... single opening for mixer not one for gas mixture & one for air; placement & design of trip rod for spark and there is no butterfly in internal intake passage to control amount of fuel-air mix. Also the head appears to be thicker & top of valve chamber is below top surface of head on my engine. I could not get my photos small enough so Richard will post for me.Any help with this engine appreciated, especially on push rod actuation system and water pump. |
richarddurgee
Senior Member
Username: richarddurgee
Post Number: 845
Registered: 11-2001
| | Posted on Thursday, September 15, 2005 - 10:43 pm: |
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Dougs engine
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richarddurgee
Senior Member
Username: richarddurgee
Post Number: 846
Registered: 11-2001
| | Posted on Thursday, September 15, 2005 - 10:51 pm: |
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1899 Truscott patents
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thomas
Senior Member
Username: thomas
Post Number: 286
Registered: 07-2002
| | Posted on Saturday, September 17, 2005 - 12:11 pm: |
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Is it possible that someone made another head out of steel plate (hence the smooth, non CI look)? That would explain why they abandon the original make & break and got rid of the actuating levers etc. My 1902 Truscott has a water cooled head. Maybe this IS a Truscott. |
doug11k
Member
Username: doug11k
Post Number: 13
Registered: 12-2003
| | Posted on Saturday, September 17, 2005 - 05:14 pm: |
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Thomas,
It is possible that someone made the head. There are other differences between mine & patent engine: cc on patent is split horizontally while mine has a single flange. Patent has two intake tappings in cc, mine only one. A 3/8" npt ignitor plug will screw into top surface of valve chamber on my engine.... not sure what size thread ignitor plugs usually are ... never seen one. I've contacted the historical society in St. Joseph, Mich. & they will help. |
thomas
Senior Member
Username: thomas
Post Number: 287
Registered: 07-2002
| | Posted on Monday, September 19, 2005 - 10:14 am: |
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In the news clipping copies I have from the St. Joseph Hist. Soc. there was a mention of Truscott building gas engines in the late 1890's.
In the 1900 Truscott catalog (poor & incomplete Xerox) that I have they mention that the 1900 year saw a new and much improved make & break igniter that allowed easy, 2 bolt removal plus it had bigger, long wearing contacts. This does
mesh with what we seem to know about the really early engines (via the patent drawings and your new find): those M&B contacts were tiny and that igniter would be a bear to try to work on because both parts but especially the moving up/down part would have to be sync'd up to (retimed?) before the engine would run again. |
richarddurgee
Senior Member
Username: richarddurgee
Post Number: 847
Registered: 11-2001
| | Posted on Monday, September 19, 2005 - 12:07 pm: |
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1898 Truscott
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thomas
Senior Member
Username: thomas
Post Number: 288
Registered: 07-2002
| | Posted on Monday, September 19, 2005 - 12:45 pm: |
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So Doug has an engine between the 1898 and the 1900 do we think?? |
richarddurgee
Senior Member
Username: richarddurgee
Post Number: 848
Registered: 11-2001
| | Posted on Monday, September 19, 2005 - 12:46 pm: |
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Just thinking out loud here!
Several years ago when trying to name an old marine engine I recieved some very sage advice from Dick Day he said "look at the castings, compare the castings" !
The two 1898 Truscott singles above even though in the same catalog have different castings ! Neither of them are like Dougs engine. Both of the 1898 Truscott singles have crankshaft level split cases, a newer technology than the rear flange access on dougs engine, so to me this says that dougs eng is an earlier model if it is a Truscott, or another mfgr that had many similarities to the truscott ??
Anyone know of a mfgr that had the atmospheric intake valve and igniter on its two stroke like this engine, other than Truscott ?? |
thomas
Senior Member
Username: thomas
Post Number: 289
Registered: 07-2002
| | Posted on Monday, September 19, 2005 - 04:54 pm: |
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Richard, My 1902 Truscott has the two end cap crankcase bearing covers
like
Doug's. I see the horizontally split C/S but at that time in IC engine
design, things were changing FAST. I wonder if Truscott actually made
the
1898 -99 engine or farmed it out? Another thing I noticed is that they
only have one model engine in 1898. By 1901 and 1902 they speak of the
"Standard" model and the "Special" model (mine is a Special). The
Standard
model engines have a whole different C/S setup and do look very similar
to
the 1898 one. |
richarddurgee
Senior Member
Username: richarddurgee
Post Number: 849
Registered: 11-2001
| | Posted on Monday, September 19, 2005 - 07:00 pm: |
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This is a rare Truscot photo ad from April 1901 and it shows the flanged crank ends ? was this an old engine photo they used for the ad or was this the engine that was sold in 1901 ?? It has a two bolt more conventional igniter !
Tom, how did you date your Truscott as 1902 ?
The idea that Truscott outsourced some of their engines sounds good-- a lot of different engine castings going on here in a 3-4 year period >
The 1898 Truscotts had split cases the later ones 1901-02 had front and rear flanges, non so far like Dougs engine with just a rear flange ?? |
thomas
Senior Member
Username: thomas
Post Number: 290
Registered: 07-2002
| | Posted on Tuesday, September 20, 2005 - 10:44 am: |
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Richard,
I dated my engine going by what I had to work with (which I have stated is pretty thin) BTW, I have a theory that you have some kind of "time machine" or a brother-in-law in another dimension
from which you pull this excellent material from at the drop of a hat!!
I have noticed that there are only a few delineators from about 1901 to 1904.
To the best of my memory this is what they are: The cylinder water jacket does not come down below the bottom of the exhaust opening until the 1903 model. The head is only a seperate part up to 1904. There are both a front and a rear crankcase bearing/cover up through the 1903 model then there is only the front cover. The igniter (the 2 bolt model) was changed to include
a brace/bearing to support the ouboard end of the moving contact axle about 1905.
Since my engine water jacked does not go below the exhaust opening I dated it as a 1902. I made a restoration error on my engine when I added a rear facing oiler. What I saw was a 3/8" NPT opening down low in the cylinder that was OBVIOUSLY supposed to oil the lower rings. I could never locate any illustrations showing such an oiler. As it turned out, that threaded hole is really for a screwed in pivot that was part of the variable pitch/reversing propellor control. I figured that an added oiler at the back had to be a later model improvement. My
copy of the 1901 catalog is junk. My engine looks exactly like the 1901 shown in your ad.
So it probably could be an '01 or '02. |
thomas
Senior Member
Username: thomas
Post Number: 291
Registered: 07-2002
| | Posted on Tuesday, September 20, 2005 - 01:20 pm: |
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I am re-posting 3 pictures of my Truscott which now appears could be a 1901 or a 1902. |
thomas
Senior Member
Username: thomas
Post Number: 292
Registered: 07-2002
| | Posted on Tuesday, September 20, 2005 - 01:21 pm: |
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thomas
Senior Member
Username: thomas
Post Number: 293
Registered: 07-2002
| | Posted on Tuesday, September 20, 2005 - 01:23 pm: |
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thomas
Senior Member
Username: thomas
Post Number: 294
Registered: 07-2002
| | Posted on Tuesday, September 20, 2005 - 01:24 pm: |
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