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Post by faffer on Aug 7, 2019 17:08:05 GMT
Has anybody done the above on a GRP cruiser ? What was involved and cost of parts etc. I have the engine. Admiral Faffer Just wondering before i get slated
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Post by JohnV on Aug 7, 2019 17:20:22 GMT
this is not something I have done, nor seen done. As an observation the hull shape of a boat designed for an outdrive or outboard is usually different from one designed for a shaft. You can't really just stick the shaft out of the bottom of a transom and hope to get a good water flow to the prop maybe a "P" bracket style might be possible but I don't know.
sorry can't help with this .... you are on your own as far as my input cheers John
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Post by faffer on Aug 7, 2019 17:26:19 GMT
this is not something I have done, nor seen done. As an observation the hull shape of a boat designed for an outdrive or outboard is usually different from one designed for a shaft. You can't really just stick the shaft out of the bottom of a transom and hope to get a good water flow to the prop maybe a "P" bracket style might be possible but I don't know. sorry can't help with this .... you are on your own as far as my input cheers John I dont mind a cut and shut of the hull, cut back the keel ever to gain water flow etc. You know m know anything is possible Just trying to work out cost first then i will look into mods to the hull etc.
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Post by Deleted on Aug 7, 2019 18:37:59 GMT
I wonder if a vee drive arrangement might be worth looking at. Obviously you'd need shaft log, p bracket and a rudder arrangement as you would for ordinary shaft but it would mean the engine would not have to be moved so far forward. Slightly strange but the only thing I remember about Mercedes diesels is someone offered me one years ago when I was about 15 he said I could have it but that it had suffered forward main bearing damage due oil starvation from being mounted at too much of angle. It was ages ago but for some reason stuck in my head. I think it was a 1.9 diesel car engine someome had used in a boat. I didn't take the engine.
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Post by faffer on Aug 7, 2019 18:44:07 GMT
Just been looking at that but after thought i think as in either way the engine has to be moved, it will be better to have it under the cockpit, aslong as the props and shafts etc are not to long. The longer they are the worse for wobble etc i read. I have made up a few drive shafts on cars and all went well and didnt self distruct lol.
The better weight distribution also if its under the cockpit the third way down the boat and then water tanks under rear deck where the engine was., with the Flexi drive it will only need moving back a little and that will mess up room in the rear cabin.
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Post by JohnV on Aug 7, 2019 18:46:37 GMT
Admiral Faffer ..... Sir, if you want a boat with a shaft drive ....... wouldn't it be easier to start with one vaguely the right shape ? I mean ..... I know you are a glutton for punishment but surely there must be a limit
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Post by Deleted on Aug 7, 2019 18:56:45 GMT
Oh I suppose yes if you actually want to move the engine forward for layout purposes then it might be okay.
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Post by faffer on Aug 7, 2019 19:01:05 GMT
Admiral Faffer ..... Sir, if you want a boat with a shaft drive ....... wouldn't it be easier to start with one vaguely the right shape ? I mean ..... I know you are a glutton for punishment but surely there must be a limit Where is the fun in that Capn V It may not come to it with the hull shape but i need to look into it to rest my weary head from aching lol.. There must be a limit you say. Over the last week or so i was designing how to widen it to 10 foot beam lol. I would do but the pointy end makes it hard work.
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Post by Jim on Aug 7, 2019 20:07:59 GMT
Admiral Faffer ..... Sir, if you want a boat with a shaft drive ....... wouldn't it be easier to start with one vaguely the right shape ? I mean ..... I know you are a glutton for punishment but surely there must be a limit Where is the fun in that Capn V It may not come to it with the hull shape but i need to look into it to rest my weary head from aching lol.. There must be a limit you say. Over the last week or so i was designing how to widen it to 10 foot beam lol. I would do but the pointy end makes it hard work. So extend it lengthways too, from the point the bow curve starts, by as much as it takes to sort the curve out. Simple.
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Post by Deleted on Aug 8, 2019 9:48:53 GMT
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Post by bodger on Aug 8, 2019 12:09:52 GMT
Admiral Faffer ..... Sir, if you want a boat with a shaft drive ....... wouldn't it be easier to start with one vaguely the right shape ? I mean ..... I know you are a glutton for punishment but surely there must be a limit Where is the fun in that Capn V It may not come to it with the hull shape but i need to look into it to rest my weary head from aching lol.. There must be a limit you say. Over the last week or so i was designing how to widen it to 10 foot beam lol. I would do but the pointy end makes it hard work. oh dear .................. earwiggoagain ................... rod .... back springs to mind.
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Post by faffer on Aug 8, 2019 18:17:52 GMT
Where is the fun in that Capn V It may not come to it with the hull shape but i need to look into it to rest my weary head from aching lol.. There must be a limit you say. Over the last week or so i was designing how to widen it to 10 foot beam lol. I would do but the pointy end makes it hard work. So extend it lengthways too, from the point the bow curve starts, by as much as it takes to sort the curve out. Simple. When can you pop over then I have been sending the website and sellers questions for ages and still no reply and i do believe all boats are sold on there. Some crappy website i reckon. And i would still rip it out to a shell lol. Where is the fun in that Capn V It may not come to it with the hull shape but i need to look into it to rest my weary head from aching lol.. There must be a limit you say. Over the last week or so i was designing how to widen it to 10 foot beam lol. I would do but the pointy end makes it hard work. oh dear .................. earwiggoagain ................... rod .... back springs to mind. You got no imagination kida lol. Anyway, looking at surface drive and making my own if i go that way, if its a no go then i will see how the Transdrive gets on, use it when ever i can while fitting the boat out etc and if all fails and the surface drive is a no goer aswell and then if a full recond Transdrive is OTT its an out board boxed in with a deck on top.
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Post by bodger on Aug 8, 2019 19:14:57 GMT
oh dear .................. earwiggoagain ................... rod .... back springs to mind. You got no imagination kida lol. Anyway, looking at surface drive and making my own if i go that way, if its a no go then i will see how the Transdrive gets on, use it when ever i can while fitting the boat out etc and if all fails and the surface drive is a no goer aswell and then if a full recond Transdrive is OTT its an out board boxed in with a deck on top. clearly you haven't seen the last 3 boats I converted/constructed........................ if anything I could be criticised for letting my imagination run riot and then implementing it. ................ but taking a perfectly good outdrive boat and trying to convert it to inboard is just a waste of time and money. Your last paragraph makes a lot more sense.
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Post by JohnV on Aug 8, 2019 19:22:42 GMT
what about a diesel engined long tail ?
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Post by phil70 on Aug 8, 2019 19:27:44 GMT
And outdrive is so much more manouverable almost the same as having a Outboard. I would forget the shaft and stick with the leg. Phil
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