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Old 02 December 2011, 11:47   #31
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If you are talking genny you might as well just burn the fuel in an outboard! Ballpark efficiencies: Burning fuel in engine & converting to mechanical movement - 30ish %. Converting mechanical movement to electricity - 95 ish% converting electricity back to mechanical movement- 95-ish % Then there's all the extra power you need to lug the extra weight around and the 1-ish % loss i nthe eletric controller.

It strikes me if you want electric for "proper quiet" cruising, could you twin up? At those sort of speeds & power havig the petrol O/B offset won't make a huge difference, and if you get one with a charging circuit, you then only need one battery and can use the 'leccy machine where you want to be in "stealth mode". That way it also gives you more space as your genertator is hung on the transom instead of taking up space on deck. If you are really fighting the wind, turn them both on!

Hope the ankle improves soon.
The idea of getting an outboard with a charging circuit did cross my mind, but I thought I might look a bit silly having two engines on a 10 foot boat!

I haven't ruled out using a petrol outboard, but I reckon I've given up on the genny idea - if I go electric, I will just take more than one battery

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Old 02 December 2011, 12:36   #32
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I thought the fins might struggle even more than an electric outboard with weeds and underwater shopping trolleys!
Struggle? No, the fins just don't work in weed And as for shopping trolleys...

Everywhere else though, awesome. You can achieve a great turn of speed whilst sat there holding the beer and sandwiches
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Old 02 December 2011, 16:25   #33
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- if I go electric, I will just take more than one battery

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Get deep cycle leisure batteries from a caravan shop rather than a boaty shop as they will be 30% cheaper . Numax are decent. Get a decent charger like a CTEK and your batteries will last for years as long as you never take them below 30% or 10.5V or you will kill them.
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Old 03 December 2011, 06:51   #34
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Hi

as stated before I would look at the total package

electric engine ---------------2.3 HONDA 12KG engine air cooled
need batteries ---------------no batteries need
no fuel on board smoke away--no 2nd battery no recharging
some have throttle lock-------standard feature
whats needed for 1 days running
sorry dont know--------------5l and you will run all day and some!
warranty depends on make----6 years!! that is not a typo
what you need to carry
engine + 1 or 2 heavy batteries-12.3kg engine + 5L standard petrol
Cost
varies depending on model------less than 600 inc delivery
+batteries---------------------would buy carry bag at around 40

Good luck

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Old 03 December 2011, 09:22   #35
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Hi Dave, I appreciate your post - it would be interesting to hear a reply from a Minn Kota dealer

I reckon the Honda 2.3 would be superb for the purpose intended...

...it's lightweight, easy to hand over board from a yacht, and will not usually be very heavily used during the 6-year warranty period (whose small print probably includes an expensive requirement for an annual service by a franchised dealer?)

If I needed an engine for a yacht tender, the Honda would be at the top of my list!

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Old 03 December 2011, 10:16   #36
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Get deep cycle leisure batteries from a caravan shop rather than a boaty shop as they will be 30% cheaper . Numax are decent. Get a decent charger like a CTEK and your batteries will last for years as long as you never take them below 30% or 10.5V or you will kill them.
I guess battery maintenance is another 'black art' which needs to be mastered!

My masterplan includes the likelihood of leaving my boat in the open air between trips, and it would be nice to be able to use a solar-powered trickle charger

Now there's a whole new can of worms...

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