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  1. #1
    Scott Waddell's Avatar
    Scott Waddell Guest

    Default "I found a trolling motor that

    "I found a trolling motor that was built by "Sterling Jet Propulsion Research, Inc of Minneapolis, MN". It has a number P500 on it. The owner passed away, but his wife said it was the only one made and given to her husband to test. He didn't like something about it and another was never made. Any one have any info on this? Thanks"

  2. #2
    Join Date
    May 2007
    Location
    Inverary, Ontario, Canada - The Great White North Eh!
    Posts
    8,312

    Default "Scott, you may have a "pr

    "Scott, you may have a "prototype" but the P500 was built in the 1950's and a good few went into existance. I have found little information on these, but there is at least two more guys who have visited this site that have that model..."
    Graham

    A "professional" is someone who gets paid for their work - it doesn't necessarily mean they are good at it :)

  3. #3
    Scott Waddell's Avatar
    Scott Waddell Guest

    Default Thanks for your reply. The wif

    Thanks for your reply. The wife said she thought it was the only one made. Do you know if the others were made by "Sterling Jet Propulsion Research Inc"? Any idea how to get in touch with the others who own one of these? She is planning on putting it up for auction with the rest of her estate in a couple of months.

  4. #4
    Join Date
    May 2007
    Location
    Inverary, Ontario, Canada - The Great White North Eh!
    Posts
    8,312

    Default "Scott, another fellow (No

    "Scott, another fellow (Norman) posted here with a P500 jphinney@alltel.net - don't know if he dug up any more info on the model.

    I did find a reference to it on the net - but can't find it (of course) - was in a parts list from an aftermarket place, listing some parts that either were still available or could be retrofit."
    Graham

    A "professional" is someone who gets paid for their work - it doesn't necessarily mean they are good at it :)

  5. #5
    Scott Waddell's Avatar
    Scott Waddell Guest

    Default Thank you. I really appreciate

    Thank you. I really appreciate the guidance. I'll look in that direction and keep an eye on here. I'll postif I find any thing relevant.

  6. #6
    j-j-johnson's Avatar
    j-j-johnson Guest

    Default "I wonder if this is any relat

    "I wonder if this is any relation to a Sports Jet 450 that was given to me by a friend to get running for him.
    The tag info is:
    Sport Jet Industries, Inc.
    Minneapolis, Minnesota
    Model #450
    I posted some pics for reference
    speedjet-1"">
    speedjet-2"">
    sprotjet-3"">
    sportjet-4

  7. #7

    Default Well i also have one with owne

    Well i also have one with owners manual.

  8. #8

    Default "this is mine <[img]"http:/

    "this is mine

    jet motor

  9. #9

    Default Re: "I found a trolling motor that

    I have one of the exact same of what you desribed. I`ve never seen another like it.

  10. #10

    Default Re: "this is mine <[img]"http:/

    That p500 is the same colr model and style of the one i have.

  11. #11

    Default Re: "this is mine <[img]"http:/

    If anyone finds out anything on the p500 post it if you would please. I haven`t any knowledge of this motor at all. Thanks

  12. #12

    Default Re: Sterling jet propulsion trolling motor P500 prototype

    I know the original post was from 2008, but here's what I know.

    I have a similar outboard if not the same one, I don't have it in front of me for the model number. Mine is painted olive green. The motor was made by Clinton in Iowa. I never had a fuel connector for it but I get by with a piece of hose fit over the barb.

    I use it with the old Sears boat that I got it with, my kids have a blast when I run them around it in.

  13. #13
    Join Date
    Aug 2010
    Location
    Bank of the Ohio river
    Posts
    125

    Default Re: Sterling jet propulsion trolling motor P500 prototype

    the green engine is tecumseh based and the baige outboard I bet is a clinton, perty darn cool if you ask me....but then no one ask me did they...

  14. #14

    Default Re: Sterling jet propulsion trolling motor P500 prototype

    I dug this up from my notes, not sure where I found it anymore, might have been another forum. I think this was text conversion, spelling mistakes are left in place.

    Starling Jet - The Old Outboard Book

    http://books.google.com/books?id=eii...sult#PPA149,M1

    Starling Jet

    "From Propulsion Research, Inc. in Minneapolis, heart og outboard country, came Americas's first production lin jet propelled outboard." So stated the 1965 introductory brochure for the Midel P-500 Starling Jet "complete fishing motor."

    Actually, other US companies (such as Lancaster Pump) had similar producst pre****** the Starling Jet, but this firms Marine Jet Division was probably aiming at wider distribution. The 5-hp, air-cooled, single-cylinder powerhead was built by Clinton Engined Corporation of Maquoketa, Iowa, and looked identical to Clinton's own outboard power plant. The jet lower unit was ao Propulsion Researches's design and drew water through a grill into a small turbine. This internal turbine created "super hydro thrust" and pushed a jet stream through slots where a propeller would be on a regular outboard. the 29-pound, 2 cycle rig was marketed to fishermen wanting to maneuver in weedy, shallow waters. Safety-minded swimmers and skin divers were also targetted in ads stressing "prop-less" action.

    At 6,800 rpm (a lot of revs for the lawn-mower-style powerhead), the Starling Jet gave 82 pounds of push. The company, however, suggested an operating range of 3,900 to 5,000 rpm.

    This novel little motor came with a 3-gallon remote fuel tank and was available in "Jet White" for fishermen or "Olive Drab" for duck hunters. Neither group really responded to the thrust of Propulsion Research's message, and the Starling Jet was grounded a few years later.
    I have seen copies of Clinton service manuals show up on eBay occasionally. The one I have gives the motor model as J9-1103 with a note that these were sold to Propulsion Research Inc and that Clinton supplied the Powerhead and handle assemblies only.

    I'll be out at the lake where mine is stored next weekend and will get some pictures of it.

  15. #15

    Default Re: Sterling jet propulsion trolling motor P500 prototype

    I was able to take some pictures of the motor this weekend for anyone that's curious. I put them and some info about the engine together so that people can reference it in the future.
    https://picasaweb.google.com/1067518...t=embedwebsite

    From Starling Jet P-500

    From Starling Jet P-500
    Last edited by admin; 07-12-2011 at 03:18 PM. Reason: fixed link to photo gallery

  16. #16
    Join Date
    Aug 2010
    Location
    Bank of the Ohio river
    Posts
    125

    Default Re: Sterling jet propulsion trolling motor P500 prototype

    that just absolutly cool cool , but you url doesn't work

  17. #17

    Default Re: Sterling jet propulsion trolling motor P500 prototype

    fixed the link. there must have been a word in the url that got blocked by spam settings.

  18. #18

    Default Re: Sterling jet propulsion trolling motor P500 prototype

    Looks like it didn't like Google's blog site.

    Here's a shortened URL http://tinyurl.com/66g5x9v

    Here's the text, pictures are all in the gallery too.

    Starling Jet P-500 Outboard


    Years ago someone gave me an old Sears sailboat and a unique jet drive outboard motor. My parent's have a cabin at a lake that I've kept it at and I get it out occasionally and run my kids around in it without worries about a propeller hurting anyone (although I bet I worry the neighbors that haven't seen it up close).

    I've collected some information about it over the years on my own and from various forum postings made by others when these things surface from time to time from the depths of someone's garage/shed/basement.

    Here is an excerpt from The Old Outboard Book that gives some information on the motor.
    Starling Jet - The Old Outboard Book

    http://books.google.com/books?id=eiiDaiBQn5EC

    Starling Jet

    "From Propulsion Research, Inc. in Minneapolis, heart of outboard country, came Americas' first production line jet propelled outboard." So stated the 1965 introductory brochure for the Model P-500 Starling Jet "complete fishing motor."

    Actually, other US companies (such as Lancaster Pump) had similar products predates the Starling Jet, but this firms Marine Jet Division was probably aiming at wider distribution. The 5-hp, air-cooled, single-cylinder powerhead was built by Clinton Engines Corporation of Maquoketa, Iowa, and looked identical to Clinton's own outboard power plant. The jet lower unit was all Propulsion Research's design and drew water through a grill into a small turbine. This internal turbine created "super hydro thrust" and pushed a jet stream through slots where a propeller would be on a regular outboard. the 29-pound, 2 cycle rig was marketed to fishermen wanting to maneuver in weedy, shallow waters. Safety-minded swimmers and skin divers were also targeted in ads stressing "prop-less" action.

    At 6,800 rpm (a lot of revs for the lawn-mower-style powerhead), the Starling Jet gave 82 pounds of push. The company, however, suggested an operating range of 3,900 to 5,000 rpm.

    This novel little motor came with a 3-gallon remote fuel tank and was available in "Jet White" for fishermen or "Olive Drab" for duck hunters. Neither group really responded to the thrust of Propulsion Research's message, and the Starling Jet was grounded a few years later.
    Clinton Engines is no longer in business, however there is a website with some history about the company. http://www.clintonengines.com/

    I found a copy of a Clinton service manual on eBay and found some more information on the engine itself. It is a model J9-1103. This particular model code has a note in the document that these were sold to Propulsion Research Inc and Clinton supplied the Powerhead and handle assemblies only.

    While the engine is air cooled, the exhaust is not. There is a water pump, according to the manual:
    Although the outboard has an air cooled engine, a water pump is provided to cool the column and condense exhaust gases. When the pump is working properly a fine spray of water will come out of the small holes on rear of the column just below the reverse lug. If the water inlet holes are plugged or the pump should fail, stop at once and correct the source of trouble. Do not run the outboard out of water for more than one minute as this may damage the water pump.
    Magneto & Ignition System from the manual:
    Inspect spark plug every fifty hours of operation. If the engine fails to start or hard to start, check gasoline supply, carburetion and spark plug. To test magneto for spark, remove high tenstion wire from spark plug and hold about 1/8" from any metal part of motor and pull starter cord. If a spark bridges the gap the magneto is in good operating condition. If no spark, have the condenser and soil checked at an authorized Clinton Service Center. The setting for breaker points is .020 and spark plug gap is .025. The correct spark plug is a Champion J12J. (CJ8 in another manual)
    Starting, stopping, flooding and carb adjustment from the manual:

    Starting Procedure:
    With controls of the motor located on the front panel, slide choke lever to the left, full limit.
    Slide throttle lever to start position.
    Pull started handle slowly until you feel starter engage, then pull rapid motion and allow the starter cord to retract slowly.
    When engine starts, slide choke to right to about center position and leave at this position until engine warms up sufficiently, then slide choke all the way to the right.

    Stopping Procedure:
    To stop engine, raise throttle lever upward. This shorts out engine regardless of position of throttle. It is best to slow engine before stopping.

    Flooding:
    Flooding is usually caused by over-choking the engine. To remedy this condition turn carburetor high speed adjusting needle counter-clockwise to lean out fuel mixture. Crank engine several times to remove excess raw fuel from engine. When the engine starts, readjust the high speed adjusting needle to its original setting or in accordance with instructions on carburetor adjustment.

    Carburetor Adjustment:
    The high speed and idle adjustment settings are pre-set at the factory. It should not be necessary to remove knobs for adjusting until engine is well broken in. When a greater adjustment is necessary (more than one turn of the knob) the following steps should be followed:

    1. Remove high speed and idle speed adjustment knobs by loosening set screw, then slip knob from shaft. Use a 5/64 Allen wrench to remove knobs.
    2. The shafts have a slotted end to insert screw driver. By turning the shaft screws clockwise the mixture is richer, counter-clockwise leans the mixture.
    3. Engine should start with idle needle and high speed needles 3/4 turn open.
    4. With engine at operating temperature, slide throttle to full speed position. If the engine back-fires the mixture is too lean. If the engine smokes excessively the mixture is too rich. Turn high speed shaft clockwise or counter-clockwise until engine runs smoothly. Replace high speed knob on shaft with pointer at #4 position and tighten set screw. To set idle setting move throttle lever to full left (idle position). Turn idle shaft clockwise or counter-clockwise until engine idles smoothly. Replace idle knob upon completion of these settings, accelerate engine several times, the engine should respond rapidly.
    Specifications:
    Bore and Stroke - 2 1/8 x 1 5/8
    Displacement (Cu. In.) - 5.76
    Ignition - High Tension Magneto
    Magneto point setting - .020
    Spark Plug - J12J Champion (CJ8 Champion in another manual)
    Spark Plug setting - .025
    Carburetor - Float (Tillotson)
    Crankshaft - Forged
    Bearings (Engine) - Needle and Ball
    Bearings (Gear housing) - Oilite Bronze
    Starter - Recoil
    Fuel System - Fuel Pump
    Steering - 180* Pivot-Reverse
    Fuel Mixture - 1/4 Pint Motor Oil to one Gallon of Regular Gasoline
    Idle Speed - 800 RPM
    Recommended Full Throttle Operation Range - 4000 - 5000 RPM
    Peak Horsepower - At 6800 RPM Sea Level, Barometer at 60*F.
    Aside from the name Propulsion Research and the "82 pounds of push" from the book above, I don't have any information on the jet drive lower unit. Here are some additional pictures for anyone that hasn't had a chance to see one up close.

  19. #19
    Join Date
    Aug 2010
    Location
    Bank of the Ohio river
    Posts
    125

    Default Re: Sterling jet propulsion trolling motor P500 prototype

    the 29-pound, 2 cycle rig
    Very intersting read and very cool but I have a hard time believing she only weights in at 29lb, the smallest Eska i know of is something like 44lb with out fuel, a TOB 300 tanaka is 24lb...

    I would like to see one in action...any chance you wil get her up and going?

  20. #20

    Default Re: Sterling jet propulsion trolling motor P500 prototype

    I am new here, but i also just bought a jet propulsion motor like yours. i need to find a recoil spring

  21. #21

    Default Re: Sterling jet propulsion trolling motor P500 prototype

    Please email me if anyone finds a recoil spring for the motor. i have the same outboard.

  22. #22

    Default Re: Sterling jet propulsion trolling motor P500 prototype

    I know this is a old post but does anyone know where I can get Magneto & Ignition System for this motor

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