What size outboard for a 19ft Sailing boat?

HUGE!......Way too big!...through it away immediately! use oars!......blow on your sails more! /forums/images/graemlins/grin.gif /forums/images/graemlins/grin.gif

That is precisely why I said " A 4hp 4 stroke is MORE than adequate!"

As Lakey said, the rest is Bollocks! /forums/images/graemlins/grin.gif
 
There was a post a while back about have two engines rather than one! But I guess the idea was that two small engines might weight little more than a big one, and provides extra resilience
 
Touché /forums/images/graemlins/grin.gif

But ask yourself. How often is that the case, and if the motor packed up you still need an alternative plan.
 
Check your available motors. Its been a few years now since I was using OB's but when I did many of the brands 6hp motors were identical to the 9.5hp ones except for the gearbox drive and propellor. Ergo the 6hp and 9hp weighed the same. My experience is that the extra power was worth it. The higher hp motor was often more economical as it was not needed to run on such a wide throttle opening to maintain the hull speed and not needed to work so hard. Further more in a good blow the exta power was a bonus and an added safety factor. Sometimes the larger motor has a better [or a charging circuit] which is also another bonus. I suspect that things nowdays are much the same.

Go for the larger motor.
 
I agree a 4 stroke would be best but they cost a fortune!!And cant be found second hand! I bought not long ago an 8 HP Mariner for 30 euros only ever used on Swiss lakes!!

In general a good second hand 6hp is about £60/£80 (100/150 euros) In France
 
I am based on the tyne, which is quite strong tidally.

I have about a 12 mile journey to the sea, which is why I am looking for a strong reliable engine! It is not possible to sail due to the number of bridges along the tyne!

Another club member has a boat with a 5hp engine, and it seems OK. He has never been in open water though! Only up and down the Tyne!

Will 25 kilos off the back really change the boat that much?

Carl
 
My brother in-law has a 15ft fishing boat (displacement) with an Evinrude 7.5HP 2 stroke. That motor is 2 cylinder. It's a reliable and fairly powerfull engine (I think it's available as a lower tune 4HP).
But it's got hardly any more useable thrust than my 4HP 4stroke, don't forget that you will only drive your boat at it's hull speed. It is not just noisier, but the pitch of the noise I find annoying. Plus if you've a following breeze you'll be getting 2 stroke fumes all the way.
For a twelve mile trip each way, the lower-pitched 4 stroke with better economy and less faff with fuel mixing all seem the only sensible way to go.
You'll get a good secondhand 4HP 4 stroke for £400. They do hold their price well. I wonder why?
 
I've bought an eboat which has come with a 6Hp Honda 4 stroke. Haven't been on the water yet but I was suprised by how heavy it was. I'm not sure I will be carting it home every week.

One thing to consider if that you choose your the right outboard you might be able to add a morse control for throttle and gear change. I have wondered about doing this as I'm not sure how I'm going to feel on blustery day juggling tiller, twisty throttle and finding the small plastic gear lever? /forums/images/graemlins/smirk.gif
 
i would personally go with smithy and alan.and use a 4hp l/s my own boat at 1150kgs displacement pushes along fine in the solway with a 5 hp merc 2 stroke, well laden
/forums/images/graemlins/wink.gif
 
I have now found out a bit about your boat as I had never heard of it before. No wonder with only 10 having been made!

The displacement is a bit more than you posted. Norman's figure was 0.83 tons (that's 845kg) Interesting to see that the engine originally supplied as an optional extra was a 8hp Watermota.

Nice looking boat but a very shallow draft. Does she make good progress to windward? It reminds me rather of the old Mirror Offshore but has a taller rig by the look of it. Certainly taller than the early ones. The same aft swept spreaders that I have and i think the Mirror. Is yours still like that or has it been altered, quite a few Seawych owners stiffen the rig by squaring off the spreaders and adding an extra pair of shrouds to give fore and aft lowers especially if they have to replace the mast.

I don' think that 25 kilos on the stern will make too much difference but it rather depends on how many 14 stone crew members you already have in the cockpit. Stow the beer well forward and that will balance it out! I'm tempted to say that mine is ok with 27 kg of engine on the back but of course it was not designed with an inboard in mind. The big problem is lifting the darn thing on and off. 20 years ago I used to lift mine off the bracket and stow it in the cabin after every trip but they get a bit heavier each year and I can bearly lift mine onto the bracket on dry land now let alone get it into the cabin. Its along time since I last did that.
 
My thoughts. I quite fancied a single lever control. On the other hand getting it up you trouser leg at an awkward moment might not be so good either.
The Yamaha has a smaller gear lever than the Honda and it's easy to overshoot neutral, and perhaps not even notice.
DIYman to the rescue.
A bit of alloy strip and some ss bolts plus a bit of PVC tube and voila.
(It makes gearchanging very easy and positive)

Outboardgearlever2.jpg
 
Here's some figures that some might like to peruse?

All based on Mariner Outboards........

3.3 2 stroke......14kg........£434.95

4hp 4 stroke......25kg........£649.00

8hp 4 stroke......38.1kg......£1295.00


38.1kg on the back of a 19 foot sailboat??

Yeah right. /forums/images/graemlins/confused.gif
 
I used to have a 4HP Johnson saildrive 2 stroke on a 20 footer and found it ideal for the job, I tightened the steering so that it didn't move from the straight ahead position (although it could be moved for rapid changes if required) and the throttle was situated on the top of the engine for ease of use. I also carried it as a backup for the ancient 25HP on a Shetland 570 which it would still push at 4 knots.
Stan
 
Yes there were only 10 made. I have tracked down 4 of them. The have a lot of headroom for such a small boat! They lokk simlar to a hurley 20 hull with seawych straight keels !

As to how she sails - I have yet to get out in open water in her. This is why I need an outboard!

I have narrowed the choice down to a 4 stroke suzuki or tohatsu - both around 25kgs.

Anyone use either of these brands? would either one be better than the other.

Cheers.

Carl
 
The Tohatsu is the same engine as the Mariner, I don't know about the bottom end though? Either Mariner, Tohatsu or the Suzuki, will do just fine....they are all good, but do try and get one with sail drive, and charging if possible. I know the Mariner is available as a long shaft with both saildrive and charging. I think you have made the right decision.
 
do you still have your Norman s19?
i have one too and love it. (I use a 5hp parsun 4 stroke. used to have an 8hp mariner sailmate, but it was top heavy and made too much noise)
 
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