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Roberts Motors Model M 40HP Inboard

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motorcar_manor
New member
Username: motorcar_manor

Post Number: 1
Registered: 02-2014
Posted on Thursday, February 13, 2014 - 09:06 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Hello, I own a classic car storage facility and sometimes we get interesting phone calls. I received a call from an elderly man looking to get rid of some VW parts. I go to his house and he takes me to see his VW beetle motor. I explained to him that it wasnt a beetle engine that it looks like a hit and miss motor pre 1920's. I bought the engine cause I love anything old and proceeded to research it.

It turns out its a Roberts Motors Model M 40HP motor with a Kingston carb. As you all now there really isnt much information on the web about the Roberts Motors company so I was hoping some one on here could help me out?Roberts Motors Model M
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motorcar_manor
New member
Username: motorcar_manor

Post Number: 2
Registered: 02-2014
Posted on Thursday, February 13, 2014 - 09:18 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Here are a few more pictures.


Kingston Carb
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motorcar_manor
New member
Username: motorcar_manor

Post Number: 3
Registered: 02-2014
Posted on Thursday, February 13, 2014 - 09:21 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Roberts Tag
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bruce
Senior Member
Username: bruce

Post Number: 423
Registered: 07-2002
Posted on Thursday, February 13, 2014 - 10:43 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I think someone made a one into a four on the tag?? just too small to be a 40 hp..
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motorcar_manor
Member
Username: motorcar_manor

Post Number: 4
Registered: 02-2014
Posted on Thursday, February 13, 2014 - 01:36 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

At first I thought it was a 10hp motor but when I lightly cleaned the badge it looked like 40. From some research I thought the 40hp were 4 cylinders.
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motorcar_manor
Member
Username: motorcar_manor

Post Number: 5
Registered: 02-2014
Posted on Friday, February 14, 2014 - 04:09 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

It also has 2 spark plugs per cylinder.
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richarddurgee
Senior Member
Username: richarddurgee

Post Number: 3233
Registered: 11-2001
Posted on Friday, February 14, 2014 - 06:57 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

*
after thinking about this engine and a little looking into I believe that the wrong tag was put on the engine when mfgrd or replaced at some time.

The tag says model M and 40 Hp, the model M engines had only one spark plug per cyl, a 3 1/2 inch stroke, the 40 Hp were 4 cylinder.

These are poor photos but show The Model P engines all having two spark plugs per cyl, a 5 inch stroke, and the twin was rated at 20 Hp ! maybe remove one plug and check stroke, Five inches would be expected ?

if the engine doesn't have an oiler then its probably a year or two newer.


1911 catalog page


r1


r2


Cool old engine Indeed have never seen a model P before !


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motorcar_manor
Member
Username: motorcar_manor

Post Number: 6
Registered: 02-2014
Posted on Friday, February 14, 2014 - 07:41 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Here are a few more pictures. Unfortunately, my motor looks different than the posted add.


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motorcar_manor
Member
Username: motorcar_manor

Post Number: 7
Registered: 02-2014
Posted on Saturday, February 15, 2014 - 08:24 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I zoomed in the original image of the tag. It looks like its a 10 hp motor. I guess they used a fancy stamp for the number 1 with a line through the middle. I still can't find any information on a 10hp model.
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ernie
Senior Member
Username: ernie

Post Number: 1798
Registered: 01-2002


Posted on Monday, February 17, 2014 - 11:33 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Search for Bruce Stewart here on OME
Roberts was at Bruce Stewart for a while and the engines are almost identical.
Many years ago I had a Bruce Stewart identical to the engine above.
It had been dredged up out of the CT River near Brattleboro, VT and it wasn't much good. I think it ended up in the central or western part of Mass.
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richarddurgee
Senior Member
Username: richarddurgee

Post Number: 3234
Registered: 11-2001
Posted on Monday, February 17, 2014 - 01:36 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

*
What is the diameter of the flywheel ?


*
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keith
Senior Member
Username: keith

Post Number: 411
Registered: 02-2002


Posted on Monday, February 17, 2014 - 08:18 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Roberts also made identical engines with the Mullins Tag
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foxman
New member
Username: foxman

Post Number: 1
Registered: 03-2008
Posted on Friday, February 21, 2014 - 07:49 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

test
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billschaller
Senior Member
Username: billschaller

Post Number: 589
Registered: 12-2003


Posted on Saturday, February 22, 2014 - 01:59 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Mine doesn't have that fancy timer, all I got was a blank cover.

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ernie
Senior Member
Username: ernie

Post Number: 1799
Registered: 01-2002


Posted on Sunday, February 23, 2014 - 09:17 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Mine had a distributor with centrifical advance.
Quite sure it was original or if it was added who ever did it was a real craftsman
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keith
Senior Member
Username: keith

Post Number: 412
Registered: 02-2002


Posted on Monday, February 24, 2014 - 08:27 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

FOXMAN, What's with this new member stuff, your not new.
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bjoutboardsgmailcom
Member
Username: bjoutboardsgmailcom

Post Number: 5
Registered: 05-2010
Posted on Monday, March 31, 2014 - 04:27 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I got the 10 hp Roberts in trade from motorcar_manor. Don't really need but its a cool inboard. Would trade it for a rare outboard. B.J. Pawlaczyk email bjoutboards@gmail.com

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