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Old 26 July 2009, 09:01   #11
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Boat speed

Oh, OK. Forward (so the prop is nearer to the boat) or back?
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Old 26 July 2009, 09:12   #12
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Hello all, i have a seago 2.7 airdeck with a 6hp tohatsu four stroke and i belive it can plane it just takes a bit of shifting around and is a lot better when using a tiller extension,the video is the first day we took it to bristol docks and is a lot better now we have played with adjustment on the engine. hope the link works,well i think it planes guess someone will say if it dont?
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Old 26 July 2009, 09:17   #13
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Oh and top speed on gps was 13mph with me and the mrs on.
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Old 26 July 2009, 09:23   #14
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Originally Posted by astra View Post
Hello all, i have a seago 2.7 airdeck with a 6hp tohatsu four stroke and i belive it can plane it just takes a bit of shifting around and is a lot better when using a tiller extension,the video is the first day we took it to bristol docks and is a lot better now we have played with adjustment on the engine. hope the link works,well i think it planes guess someone will say if it dont?
See it's people like you that give us ribbers a bad name - that is lunatic behaviour. Look at your wake - it could easily have sunk that ex RN vessel. It's because of people like you that they want a speed limit on the Thames..........

And yes you are on the plane - slightly bow high though!!!
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Old 26 July 2009, 12:38   #15
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Oh, OK. Forward (so the prop is nearer to the boat) or back?
You will find people generally refer to trimming up (prop nearer water) or down. If you search here you will find plenty about trimming up/down depending on conditions and to help get over the "hump" etc. Generally to help get a boat on the plane you trim down (leg closer to transom).

However once on the plane, and to get best speed / comfort in waves etc - people normally want the engine trimmed up a bit more. On a big engine this can be adjusted on the "fly" with power trim and tilt, with small engines with manually adjusted trim you have to set the trim for a trip (or leg of a trip) and accept the compromise you get. Have you found the pin that lets you adjust the trim angle?

I would also raise the engine and inch or so - as if you are struggling for speed extra drag isn't going to help. Although I doubt that this alone will be enough.
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Old 26 July 2009, 17:58   #16
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mate of mine can get 14 mph out of a 3.metre zodiac and a 4 hp mariner with one person ,i use to have a zodiac 12foot sib and i could only just get it to plane with one up and a johnson 4 hp ,a big difference with the engines and props ,,,also you say you were trying to pass some other boats ,you can get some weird water flow effects in narrow canals a barge or narrow boat with a big prop will suck water from in front of the boat even up to 10 meters in front and its not uncommon for a smaller boat in front to run out of water and ground out for a few seconds if near the sides or bank its called the canal effect and causes large ships problems. in effect they suck that much water,past the prop that the boat will drop and ground ,,,it can have that much effect that a boat will steer its self without touching the banks ,so that wont help if passing ,,,,in fresh water the prop slips a bit more too than in salt water ,,as its less dense.
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Old 27 July 2009, 07:06   #17
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Hi all any idea what top sort of speed i should get with my SEAGO ,FLAT BOTTOMED 2.7M SIB AND MARINAR 3.3 HP,?
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Old 27 July 2009, 13:11   #18
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Hi all any idea what top sort of speed i should get with my SEAGO ,FLAT BOTTOMED 2.7M SIB AND MARINAR 3.3 HP,?
bit hard to say but i think you would be struggling to get on the plane with an engine that small ,but if as you said a flat bottomed boat you might just stand a chance ,
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Old 27 July 2009, 13:31   #19
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bit hard to say but i think you would be struggling to get on the plane with an engine that small ,but if as you said a flat bottomed boat you might just stand a chance ,
Arh yes it be a slow ole engine ,good work horse tho ,pretty reliable and thats what/s needed ,just wondered how far off a 3.3 is to a 4hp
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Old 27 July 2009, 15:55   #20
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How fast

About 0.7hp would be my estimate.
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