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Old 16 August 2009, 08:48   #51
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And this is where I lament the passing of 2 strokes, having settled with the concept of main plus aux for many years, the choice of aux is the next big one. Whilst tech might be improving 4 stroke aux's still weigh a ton and the ones that are usable power are barely liftable. Depending on your cruising ranges and locales,.. another dilemma beckons
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Old 16 August 2009, 08:55   #52
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Biz

You are right. So, which aux? 9HP? 20? diesel? 2 stroke? 4 stroke?
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Old 16 August 2009, 17:12   #53
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oops...accident
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Old 16 August 2009, 17:13   #54
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You are right. So, which aux? 9HP? 20? diesel? 2 stroke? 4 stroke?
Go with the same fuel type as your main engine. Since you're gonna use it never, provided it starts every time and has enough power any type will do.
It's a Sod's law thing really; if you don't have it, you'll need it, if you do have it, you'll never need it. Second option is best.
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Old 16 August 2009, 17:24   #55
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Go with the same fuel type as your main engine.
But if the main engine is diesel (he's looking at Redbay's so thats quite plausible) then a Diesel outboard will not only be like hens teeth but also cost him about the same as going with twins!
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Old 16 August 2009, 17:31   #56
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Yanmars are available secondhand if you keep yer eyes peeled. Mine was a reconditioned (FYM) fish farm engine somewhere less than 4K. Can't exactly remember.
It's remarkable, starts on the button every time. I bought it early in the build and it lay for 2 years before first starting. Primed it, turned key, ran.
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Old 16 August 2009, 17:59   #57
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What abut an inbard wing engine?
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Old 16 August 2009, 18:10   #58
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What abut an inbard wing engine?
Damn you chewy, I wrote that post and deleted it as pure fantasy.

The one with the diesel donkey engine with the folding prop and the deployable rudder.

Stop doing that....
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Old 16 August 2009, 18:13   #59
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Well, funny you should say that, a good while ago I had a conversation with Alan Priddy and he reckoned a water jet/engine as used on jet skis would be a possibility.
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Old 17 August 2009, 02:51   #60
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Well, funny you should say that, a good while ago I had a conversation with Alan Priddy and he reckoned a water jet/engine as used on jet skis would be a possibility.
A couple of companies make a maneuvering water jet system, with one powerplant and dour nozels. No reason why this could not be used in a cabin RIB to provide auxilliary propulsion as well as acting as a bow thruster?



(Of course I would want a hose connector on deck so I could return fire when the lifeboat crew are "testing" their fire hose!)
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