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    Gannet 15CC 4 stroke engine
    by NBT πŸ‡¬πŸ‡§ ( Master Seaman)
    πŸ“£










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    27 Posts 26 Replies 5 Photos 37 Likes
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    NBT
    Master Seaman
    πŸ“ Gannet 15CC 4 stroke engine
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    Country: πŸ‡¬πŸ‡§ United Kingdom
    Online: 13 hours ago
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    Its a nice bit of engineering and sounds brilliant, just need to find somewhere to use it now. Attached shows it without oil tube ( i remove it after running to avoid a hydraulic lock on the next run ).
    1
    Newby7
    Commodore
    πŸ“ Gannet 15CC 4 stroke engine
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    Country: πŸ‡¨πŸ‡¦ Canada
    Online: 6 hours ago
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    Wonderful NBT you are getting on with the engine.Good luck going foreword.
    Rick
    1
    Ianh
    Lieutenant Commander
    πŸ“ Gannet 15CC 4 stroke engine
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    Country: πŸ‡ΏπŸ‡¦ South Africa
    Online: 18 hours ago
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    Hi NBT,
    I guess that makes a happy camper! Might have been a long way round to make sure it runs but you have a piece of history πŸ‘πŸ‘πŸ‘
    1
    Only old in years not mind or soul.
    Martin555
    Fleet Admiral
    πŸ“ Gannet 15CC 4 stroke engine
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    Country: πŸ‡¬πŸ‡§ United Kingdom
    Online: 9 days ago
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    NBT,
    Excellent result.
    I bet you are a happy bunny.

    Martin555.
    If it looks right it probably is.
    NBT
    Master Seaman
    πŸ“ Gannet 15CC 4 stroke engine
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    Country: πŸ‡¬πŸ‡§ United Kingdom
    Online: 13 hours ago
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    The Gannet lives ran it today for the first time started very easily, i had previously tested the ignition system which gave a very strong spark after cleaning the points. Ran beautifully very quiet and low tick over, I used 1ml redex to 1 litre fuel and 5w30 oil in the oil tube which i adjusted slightly to lower the flow, nice faint blue exhaust. I used a garden sprayer manual pressurised container for water cooling just pumped through the water pickup. Think i uploaded a short video.
    2
    NBT
    Master Seaman
    πŸ“ Gannet 15CC 4 stroke engine
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    Country: πŸ‡¬πŸ‡§ United Kingdom
    Online: 13 hours ago
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    Well that was an anti-climax, the locking nut at the engine coupler end came undone very easily which then allowed the drive shaft to be unscrewed by hand from the engine coupler and pulled out. Thanks for all your help
    1
    NBT
    Master Seaman
    πŸ“ Gannet 15CC 4 stroke engine
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    Country: πŸ‡¬πŸ‡§ United Kingdom
    Online: 13 hours ago
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    Thanks yes i think they are the only options to try, there is about a 2mm gap between the lock nut and brass shaft at the coupler end so its possible i can loosen there and then hopefully simply unscrew the drive from the prop end.....sounds simple but will give it a go later and see how many expletives i can get through.
    1
    Martin555
    Fleet Admiral
    πŸ“ Gannet 15CC 4 stroke engine
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    Country: πŸ‡¬πŸ‡§ United Kingdom
    Online: 9 days ago
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    Hi NBT,

    I am not sure but it looks like the shaft screws in to the black hex/rubber/hex coupler.
    It may be a case of undoing the locknut at the prop end and releasing the motor before you can undo the locknut at the coupler end.

    Or undo the locknut at the coupler end and turn the shaft to undo it at the prop end.

    Martin555.
    If it looks right it probably is.
    NBT
    Master Seaman
    πŸ“ Gannet 15CC 4 stroke engine
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    Country: πŸ‡¬πŸ‡§ United Kingdom
    Online: 13 hours ago
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    Can anyone make sense of the attached photo. Have tried to diagram the drive setup possibly not very successfully. The coupling from the engine to drive shaft seems to be a rubber coupled drive. What i cant figure out is if the drive shaft can in someway be pulled out from the prop end. It might be a flexible drive shaft but no idea how this connects to the rubber engine drive unit. I guess the motor end of the drive shaft could also be threaded with the flanged nut locking the two together ?. Im not sure what the aluminium washer is for at the prop end other than some sort thrust washer which is now stuck on as somewhat mangled. Any thoughts appreciated.
    1
    NBT
    Master Seaman
    πŸ“ Gannet 15CC 4 stroke engine
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    Country: πŸ‡¬πŸ‡§ United Kingdom
    Online: 13 hours ago
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    As a test i cut a 6mm wide length off a leather belt to see if i could loop under the starter ring and pull it through while keeping tension on the other side. It actually works to a degree i.e. it spins over a compression stroke ( not sure if enough to start ). This might be better than a closed loop belt and an electric starter to avoid hydraulic locks bending the conrod. The engine has a quite a bit of compression which is good and turns over freely its just getting enough momentum to start to it thats going to be the trick.
    2
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