what auxiliary outboard

I have a Failine Weekend 21....

I tried a 15hp on it and got about 6.9 knots

Tried an 8hp and got 6.8kts

Tried a 5hp sailpower and got....... 6.8knts.....

So simple answer is - go for a sailpower if you can - if not, an 8hp is kind of all you need.

If I could have afforded it I would have bought the sailpower, I ended up with an 8HP Longshaft in the end as it only cost a couple of hundred quid.

Don't be fooled that higher power is better, it isn't going to get on the plane whatever you do - it's thrust you need not power so get a special prop for higher thrust rather than higher speed - I don't because I also have a small inflatable which the outboard pushes along at a cracking rate!
 
[ QUOTE ]
what's a sailpower

[/ QUOTE ] One designed for use as an auxiliary on a sailing boat. Different manufacturers use different names but usually they have high thrust props with a finer pitch than standard. Often other features that may be irrelevant to you like a DC output for battery charging, usually long-shaft (20") or even extra-long shaft (25") because sailing boats tend to pitch in a bit of a sea and lift the prop of a standard shaft (15") engine out of the water especially when mounted on a lifting bracket.

Click the pic to see the bottom end of a Evinrude Yachtwin. Note it also has exhaust outlets between the cavitation plates so that the gases are not drawn int the prop when going astern

<span style="color:white"> ........................... </span>
 
Another point worth adding. If your going to stow your auxiliary in a locker and mount it on your outboard bracket when required, have you tried lifting a 15hp engine over the transom of a moving boat? If its a 4 stroke you can double the amount of grunt. /forums/images/graemlins/frown.gif /forums/images/graemlins/frown.gif /forums/images/graemlins/frown.gif

I'd go for the 5hp, It may not get you there as quick, but it will get you there...
 
I have to say that the DC output IS very useful on an auxilliary. if the reason the main engine has failed is purely a flat battery, then running the aux for 10-15 min at a fast idle might be enough to put back just enough charge to kick it over (probably not from cold - but if you're at a anchorage and the engine's warm with warm oils it doesn't take so much to kick it over.)

Certainly if you set off for home with the engine running hard, you'd certainly charge the battery after an hour or so.

Check this link for a typical sailpower type engine and how it differs from a std engine.

http://www.yamaha-motor.co.uk/products/marine/outboards/four_stroke/ft60_ft8.jsp#

That's a Yamaha, but other makes do them as well - I note that Yam don't do a 5hp (they used to) but an 8HP Hi-thrust engine would be much better for you than a 15hp std engine especially if you set up a connection that you could connect up if you DID want your battery charging.

Alternatively, just get a hi-thrust prop - only problem here is that these high-thrust engines usually have a different geared lower end to gear the propeller down as it needs to turn more slowly and needs more torque to turn it.

Also Tohatsu do a much bigger range - see http://www.tohatsu-uk.net/EnginesNew/SailDrive.htm

These might be more suited - they do a 4,5,6,8 & 9.8hp I would say the 4 or 5 would be adequate, but talk to them as they are the experts - I've seen 30' sailing boats pushed along with 6 or 8hp engines so yours will be fine with a 4 or 5 I would think.



Also where do you boat with your Fairline??
 
[ QUOTE ]
Also where do you boat with your Fairline??

[/ QUOTE ]

Haven't bought it yet......
Am very tempted by one I have seen, but it's been standing for a couple of years, engine non-runner at the moment-should it all work out then may attempt to bring it back from Cornwall under its own power (to the solent)-hence the need for a back-up engine!
How do you find yours?
Torn between the Fairline and a Draco 23, which is lovely apart from the cramped cabin-the full standing headroom in the Fairline is a big plus.
Those Tohatsus look the business, BTW!
 
My son bought a weekender earlier this year and I helped him bring it to Exmouth from the Solent in not ideal conditions. I was very impressed by the sea handling for that size of boat, even though it was quite rough it took it all in its stride.
Draco also has a good reputation, good Scandinavian build quality. Can also recommend Tohatsu, we've had a few and they start easily, run well and cost less than the more well known makes (even though many of the other sub 10hp engines are actually re-badged Tohatsus). I've still got a 9.8 in the garage which I've had for a few years which is recognised as just about the best engine of its size and definitely the lightest.
Dracos also have a good reputation, typical Scandinavian build quality.
 
I love my weekender - main problem is engine-wise in mine.

She has the AQ145 with a 280 leg. The leg isn't power trim & tilt (which is a pain in the a*s) and it's a small engine for such a heavy boat (only 21' but heavy).

Ideally I'd like to re-power her with a 150+ diesel on a modern leg but the cost is eye-watering!

So I would say go for it, buy her and enjoy, but if she has the AQ145 or even maybe the 151 it might be a bit underpowered - they did come with v6 & V8 power and I reckon that would be more like it.

I'd also be interested in a couple of years time in getting a 2nd user diesel of 150+ HP & leg so if anyone is looking to re-power in a couple of years and is pulling something like that out then let me know!
 
.....actually to continue that thought.....

I have looked at Coastal Rides websites and Lancing Marine's and always keep a little eye on eBay, but any secondhand diesel engine seems to fetch stupid money (and I'd be super cagey about eBay buying an engine, even if you can see it running, most engines will run ok without load on, put them in the boat and under load and it might be a whole different ball park!)

So has anyone ever done the Lancing thing and marinised an old but sound engine (I'm looking at the Ford's as it should be possible to get an old (or even recon) Transit engine pretty easy - perhaps from a scrapper.

I imagine like most things it's far from as easy as it sounds and then you have to get someone to fit it because I am not a particualarly handy person.

Would I be better off just selling the boat and buying something with a diesel installed already?

Thanks
 
My son was a lucky lad, his is fitted with a TAMD (?) 40 or 41 which is the 6 cylinder 200hp jobby so the boat flies. Engine was fitted new by the previous owner about 8 years or so ago with a Bravo leg (at least that's what I think it is, not very up on outdrives) and the whole package cost him well under 6 grand. Boat was pretty scruffy but that's not too difficult to put right. I think he got a bargain. He actually offered half the asking price and had it accepted! The seller had already bought another boat so was keen to get rid.
 
The one I'm looking at has an AQ200 V8 in it-non runner! There are a couple for sale up on the Thames with the 120/130 HP engine options, and I get the impression that ain't enough for coastal work.
The Draco appeals because
1/ It's a going concern
2/ It's on a trailer, so no need to find a mooring/storage right now
3/ It's in Portsmouth, not 4.5 hours away in Cornwall...
but.........
the girlfriend has fallen in love with the Fairline....
 
Thanks LJS, that's reassuring to hear that it's a good sea boat.
Perhaps if this works out I can swing by and you can help out on a reverse transit? /forums/images/graemlins/ooo.gif
 
Work out what a new 200HP diesel will cost - work out what the boat is worth up and running...

Deduct one from the other and offer this price to the seller less a bit - in this environment they may just take it and you'll get a great boat with a brand spanker engine.
 
[ QUOTE ]
Work out what a new 200HP diesel will cost - work out what the boat is worth up and running...


[/ QUOTE ]
Have you seen the price of them??
could fuel a V8 for many many years for the price of even a medium powered oil-burner!
 
I can get seven knots, which means I can overtake Little Ship.

[/ QUOTE ]

Major, Come on now.
Everyone can overtake Little Ship.
I have tried with an egg whisk, easy peasy!
 
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