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Another Unknown

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Keith
Posted on Sunday, October 26, 2003 - 11:35 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

This is small engine and is unique in that it is a 2 cycle with a trans fer port to a valve. The engine was a green color and there is indication that it had a tag. The tag is missing.
P1010006.JPG
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Keith
Posted on Sunday, October 26, 2003 - 11:38 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

P1010007.JPG
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Keith
Posted on Sunday, October 26, 2003 - 11:44 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

P1010008
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Keith
Posted on Sunday, October 26, 2003 - 11:48 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

P1010009
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Paul Gray
Posted on Sunday, October 26, 2003 - 01:25 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Unusual engine Keith! The crankcase design has a lot of features like on a Parker; the same but different. I recall seeing something similar in the 1909 Hiscox book. You also see something like it by the Hydrocarbon Motor Co in 1898 Hiscox. Judging from the crankcase design with the two removable bearings, it is early; probably 1900. The "uniflow" scavenging from top to exhaust port is very unusual also. Most of the manufacturers seem to have figured out loop scavenging by 1905 anf abandoned this type of design.
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Tom Stranko
Posted on Sunday, October 26, 2003 - 05:37 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Keith, Could you describe the operation in the area of that valve on top of the head please??
T
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Keith
Posted on Monday, October 27, 2003 - 08:40 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Tom, I think it is an atmospheric valve that works based on pressures or vaccum. The crankcase builds pressure as the piston goes down during the power stroke. When the cylinder pressure drops to less than the crankcase pressure, the valve would open. Seems like a very inefficent system.
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richarddurgee
Posted on Monday, October 27, 2003 - 03:51 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Had been wondering about this 1898 Truscott, it also seems to have an atmospheric intake valve and chamber ??


1898truscott

This is only reference to this system in catalog !!


1898operation

Keith : Does that fascinating old engine have a flywheel ? May help with ID ?? I guess no deflector necessary on piston dome ??
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richarddurgee
Posted on Monday, October 27, 2003 - 03:57 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

operation
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Richard Day
Posted on Monday, October 27, 2003 - 09:49 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Is anyone collecting Mianus serial numbers and owners. Palmer is enough for me. Richard Durgee is collecting Lathrop I believe.
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Visitor
Posted on Monday, March 06, 2006 - 01:38 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

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