| Author |
Message |
    
John Heasley
| | Posted on Wednesday, January 29, 2003 - 09:46 am: | 
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I have a Gray one cylinder 4-cycle marine engine. I am going to restore this engine and looking for information such as literature, parts availability etc. The brass tag indicates Model # 1-5 & number 4192. Any information will be appreciated. Have pictures of engine & tag but can't figure out how to attache them to post. |
andrew
| | Posted on Wednesday, January 29, 2003 - 07:28 pm: |
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Here is a picture of John's engine.
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andrew
| | Posted on Wednesday, January 29, 2003 - 07:34 pm: |
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John's engine's tag:
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Bill Schaller
| | Posted on Thursday, January 30, 2003 - 03:13 am: |
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here is my gray model O
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rholcomb
| | Posted on Thursday, January 30, 2003 - 08:18 am: |
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There was a thread on the history of universal and gray a while back, look at the simularities of the e.k bracket bob...
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Richard Day
| | Posted on Thursday, January 30, 2003 - 07:41 pm: |
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Why do I think I have seen the model I-5 as the same as Bridgeport and US Motors Ace OK??? |
gray4cycle
| | Posted on Friday, January 31, 2003 - 09:05 am: |
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I have some catalog pictures that look just like this engine. The catalog is from U.S. Falcon. I think U.S. Falcon, U.S. Motors Corporation, Doman and Gray are somehow related. Someone told me that Gray didn't manufacture engines but purchased them & sold them under their name. Is this true?
John Heasley |
Ernie
| | Posted on Friday, January 31, 2003 - 09:38 am: |
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The Gray and Falcon engines are mirror images of eachother. Look close at the above pics. Additionally I have seen both a Gray and Falcon engines sitting side by side and they are identical, just opposite. Also there were many ignition differences/options as well as carbs. |
Richard Day
| | Posted on Friday, January 31, 2003 - 05:04 pm: |
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Well how do we explain the Brigeport which is not a mirror image. The only thing that is different from the US motors is the tag which is clearly original to the engine says Bridgeport. Clearly a travesty of justice for very high class Bridgeport engines of an older generation. What a slap in the teeth to the older generation. I have three US. motors and they are all junk in my opinion. |
gray4cycle
| | Posted on Saturday, February 01, 2003 - 10:28 am: |
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Thanks for all the replies. Unfortunately I am confused. My engine seems to be a close mirror image of Bill Schaller's model O Gray engine. Does anyone know the relationship between Bridgeport, U.S. Motors, Gray, Falcon and Universal? Are there any noticeable differences in the engines? What would be your opinion be on what Manual to purchase for my engine.
John Heasley |
Richard Day
| | Posted on Saturday, February 01, 2003 - 08:23 pm: |
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My guess is Bridgeport marketed US Motors under there name and the engine is totally US Motors otherwise. |
Tom Green
| | Posted on Wednesday, September 10, 2003 - 06:37 pm: |
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Maybe this would explain why US Motors engine and GRAY engines are similiar.....
Early Chrysler Corporate History
By Cliff Lockwood, October 18, 1968
This article was featured in the November, 1983 issue of the WPC NEWS
1910 -- Benjamin Briscoe organized the United States Motor Company, as an amalgamation of several independents, who were encountering difficulty in securing necessary financial backing. These included: Maxwell, Stoddard-Dayton, Courier, Columbia, Brush, Sampson Trucks and Gray Marine, with the Thomas and other lines being added later. |
nick mccue
| | Posted on Saturday, October 18, 2003 - 12:36 am: |
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i have a model o and need copies od drawings of the magy and trip set up. i have the main casting but need copies of all the trip gear . does any one know where i can get these |
r holcomb
| | Posted on Monday, May 10, 2004 - 06:51 am: |
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rholcomb
| | Posted on Tuesday, May 11, 2004 - 01:33 am: |
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rholcomb
| | Posted on Wednesday, May 12, 2004 - 01:10 am: |
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u s FALCON Marine Engines are backed by over fifty years of manufacturing experience and proven dependability. These engines
(originally known as DOMAN) have built up an enviable reputation. You'll find them in leading ports
. throughout the world - yes, but a greater tribute to their stamina is the number to be found in the isolated harbors and lonely waterways where repairs are few and dependability becomes all-important.
Many a sailboat has come safely through a gale and into harbor with the plucky 1tid of a U. S. Falcon auxiliary. These two-fisted performers cannot be beat - for auxiliary power, tenders, fishing, and small
pleasure craft. Fishermen like the way they will run all day at low trolling speed without "loading up." Their low speed and heavy flywheel are ideal for swinging a big propeller.
Designed for economical operation - not only from the standpoint of low fuel and oil consumption - but for a long life of useful service.
The two cylinder engine is not suitable for light pleasure boats.
SPECIFICATIONS
One cylinder, 5 H.P. - Two cylinder, 10 H.P. TYPE: 4 cycle, valve.in-head, heavy duty.
BORE: 3-3/4". STROKE: 4-1/2"'.
Cubic inch displacement -5 H.P., 49.7; 10 H.P., 99.4.
POWER RANGE: 200 to 1200 R.P.M.
POWER CURVE: - 1 Cyl.
700 RP.M. 3.5 H.P.
. 800 R.P.M. 4.0 H.P.
1000 RP.M. 5.0 H.P.
1200 R.P.M. 5.75 H.P.
2 Cyl. 7.33 H.P. 8.5 H.P. 10.5 H.P. 12.0 H.P.
IGNITION: Timer and coil, or high tension magneto. FUEL SYSTEM: Float feed carburetor and backfire trap.
LUBRICATION: Combination plunger pump and splash to
constant level oil trough. Designed for angle mounting.
BEARINGS: SAE babbitt lined.
CRANKSHAFT: 2 bearings, fully counterbalanced. (See back page.) Bearings-5 H.P., 1-3/8" dia. x 2-1/2" long. 10 H.P., l-1/2_ dia. x 3" long.
PISTONS: 3 rings: 2 compression, 1 oil.
CONNECTING RODS: Forged steel with poured bearings.
COOLING: Plunger type water pump. STARTER: Hand crank.
DRIVE: Direct or with reverse gear and clutch. THRUST BEARING: Built in integral with engine. COUPLING: For % inch shaft. Keyway. ROTATION: Right hand propeller required. PROPELLER SIZE: See back page.
NET WEIGHTS:
1 CYL. Direct Drive 180 Ibs.
With Reverse Gear 250 Ibs.
2 CYL.-265 Ibs. 320 Ibs. |
Jeff Miley
| | Posted on Monday, May 17, 2004 - 08:32 pm: |
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I just purchased a single cylinder U.S. Marine engine like the one pictured above. What years were these manufactured? Does anyone know?
Thanks
Jeff |
Hal Normand
Visitor
| | Posted on Thursday, February 03, 2005 - 04:04 pm: |
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John, I have identical Gray model 1-A, serial # 4115.
E-mail me & we can form small support group. |
Willem J. Rupka
Member
Username: bill
Post Number: 11
Registered: 03-2005
| | Posted on Thursday, August 24, 2006 - 09:46 pm: |
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This US Motor Corp single cylinder has just arrived at my home. Previous owner said he thought the model name was Falcon but reading through previous email it seems Falcon was a Vendor's name. Anyone know for sure?
Also interested in direction of rotation of this engine. The crank I was given turns the engine counter clockwise (facing flywheel). Is this correct or do I have the wrong crank.
Magneto and intake air filter are missing but see no serious problems in getting this one running.
Please excuse ropes in attached pics. These were just quick shots during unloading.
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Searcher
Senior Member
Username: searcher
Post Number: 200
Registered: 10-2004
| | Posted on Thursday, July 12, 2007 - 10:58 am: |
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I would like to crank over my Gray Model O but have a couple of questions before I do it. There is a sight glass on top of the crankcase. One would assume that the oil should be visible in the sight glass but that strikes me as being an awfully high oil level. Is that where the oil should be? What should I use for oil? |
Ernie
Senior Member
Username: ernie
Post Number: 694
Registered: 01-2002
| | Posted on Friday, July 13, 2007 - 07:25 am: |
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The sight glas is to see the end of the rod that is attached to a float. The actual oil level should be so the bottom of the connecting rod just touches the oil. Or if there is a dipper on the bottom of the rod it should just dip into the oil.
30 w non detergent should work fine for oil. However I aquired a 55 gallon drum of 10w30 years ago and have been useing it in everything for years and never had a problem.
Hope this helps
Ernie |
Searcher
Senior Member
Username: searcher
Post Number: 201
Registered: 10-2004
| | Posted on Saturday, July 14, 2007 - 09:20 pm: |
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Posted on Saturday, July 14, 2007 - 09:18 pm:
Ernie, thanks for the response. That clears things up considerably. The rod and float are nowhere to be seen so they have either dropped down inside the crankcase or they are missing altogether. When I get the chance, I will take the crank inspection cover off and see if it is in there somewhere. The engine has been sitting here in my office largely untouched since I hauled it home last winter. I did unscrew the oil level guage because the glass sight tube is broken. I tried a number of internet sites and local craft stores, etc, but haven't been able to obtain glass tubing of the right diameter (approximately 8.5MM or 0.32"). The internet sites want you to buy some ungodly quantity I would never find a use for and the craft stores only carry limited sizes. Any ideas? |
RichardDurgee
Senior Member
Username: richarddurgee
Post Number: 1501
Registered: 11-2001
| | Posted on Saturday, July 14, 2007 - 10:52 pm: |
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Glass tubing on ebay !
http://cgi.ebay.com/SIMIX-9-5-x2-MIL-GLASS-TUBING-6-PIECES-PYREX-TYPE_W0QQitemZ2 50140106700QQihZ015QQcategoryZ11812QQrdZ1QQcmdZViewItem
* |
Larry Juneau
New member
Username: grayone5
Post Number: 2
Registered: 08-2016
| | Posted on Sunday, August 28, 2016 - 05:49 pm: |
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I was recently given a Gray ONE-5 that is in rough shape. Does anyone know where I could obtain a manual? The engine has a cracked block, that I can weld. I need a new head, manifold and carburetor. Any help that anyone can give me would be greatly appreciated.} |
