Auxiliary ob advice for Antares 30 Fly ?

[QBhoy]

I think your perception is skewed due to the size of your boat. I wholeheartedly agree with you though. In your circumstances it is not only viable but practical. I've done it myself and have posted videos here of it. Then you come to a boat 6 times heavier than yours. You stand on the pontoon and give it a gentle shove. It moves almost effortlessly away from you. You think to yourself damn that was easy my 2hp would make light work of this. But trust me I have tried. I experimented for the hell of it. At anchor I have pulled mates that were about to ground stern ashore when the wind changed and they have their drives up or dare not start the engines when on shafts. I have tried to move boats for a kedge anchor into the swell instead of wind. Many, many times. Trust me, it's simply not a viable solution. Arguing the toss is a comfort factor, not pragmatic.

edit: this was done on dinks with 8 and 10hp 2 stroke twin cylinder OB. Every stroke one piston is firing, re torque and continuity
edit2: on a 15hp I couldnt lay the hp down. At above half throttle the prop just ventilated, the motor screamed and any push went pffft.

Think I know what you mean here. But I’ve had a few boats now, haha. I have 4 presently even.
The one I remember most regarding this, is a sealine boat. The bathing platform had an integrated outboard bracket. Totally useless. God knows what they were thinking.
Without doubt, should you want or feel the need for an auxiliary outboard...it needs to be set up properly. Even then...manoeuvring in close quarters, will always be difficult with any larger boat. No doubt.

 

[ontheplane]

I agree with quite a lot of the above.

So :-

1) Install - its gonna have to be low - long shaft so the prop doesn't come up out the water if its choppy.

2) 9.9 / 15 hp isn't gonna do it - 25 is a minimum

3) Its going to need to be a high-thrust motor - a standard one is not gonna work

4) I've tried towing the boat with the tender - useless and didn't work.


In summary, see if you can borrow a motor off someone - try it out, do NOT spend £1700 on this without testing it, cos I think you will be wasting your money!

 

[Bouba]

The other problem is that the auxiliary has to be securely attached.
Any outboard is difficult to handle on a rocking boat and a 25hp in difficult conditions will be impossible. So it needs installing on a permanent basis

 

[ontheplane]

The other problem is that the auxiliary has to be securely attached.
Any outboard is difficult to handle on a rocking boat and a 25hp in difficult conditions will be impossible. So it needs installing on a permanent basis

Agreed - or some sort of lifting davit and mount it on the transom when doing short hops, mount properly if going further.

Also a lot of these sprung drrop- down type mounts only go up to 15hp / 40kg so they won't work with a 25 either....

This wont be easy

 

[QBhoy]

All in all...if I had this particular boat in question. I’d just make sure it’s serviced well, have a good anchor and plenty of chain and carry extra fuel filters. All will be well with the world. Just enjoy it. Don’t think there is ever going to be an ideal auxiliary motor set up that’s ideal for this boat really. Look bloody ugly as can be too

 

[Alicatt]

Our first boat: Handy Crinan
The above boat was 12ft clinker built mahogany over oak with a Stuart Turner 1.5hp 2 stroke inboard engine to a three bladed propeller, that 1.5hp could propel our little boat along at 5 knots.
My father picked up a 4.5hp Seagull outboard in exchange for some work he had done so we tried it on our little Handy Crinan. We put some canvas over the transom to protect it from the screw clamps on the outboard and stuck the engine on the boat, we sailed her out of Balmaha on Loch Lomond, at WOT we managed a grand total of 2 knots the engine really was not set up to propel something like our boat, the engine was roasting hot by the time we had cleared the bay, so we stopped and took the outboard off and put the rudder back on started the inboard and off we putted at more than twice the speed that we managed with the Seagull.

So it is not all about the power of the engine but also how it's set up and whether it matches your hull

 

[QBhoy]

View attachment 107404
Our first boat: Handy Crinan
The above boat was 12ft clinker built mahogany over oak with a Stuart Turner 1.5hp 2 stroke inboard engine to a three bladed propeller, that 1.5hp could propel our little boat along at 5 knots.
My father picked up a 4.5hp Seagull outboard in exchange for some work he had done so we tried it on our little Handy Crinan. We put some canvas over the transom to protect it from the screw clamps on the outboard and stuck the engine on the boat, we sailed her out of Balmaha on Loch Lomond, at WOT we managed a grand total of 2 knots the engine really was not set up to propel something like our boat, the engine was roasting hot by the time we had cleared the bay, so we stopped and took the outboard off and put the rudder back on started the inboard and off we putted at more than twice the speed that we managed with the Seagull.

So it is not all about the power of the engine but also how it's set up and whether it matches your hull

Where is that picture taken ? Lovely picture.

 

[Lisa&Paul]

OK , Thanks to all for your very useful advice and comments , after very little discussion with the captain ( she who must be obeyed ) we have decided on the following action .
1/ Full annual service ( already in place )
2/ Carry 2 of the following , fuel filters , oil filters , drive belts , and 1 spare impeller ( although we change this annually anyway ) and practice ability to change said items ensuring we have the required tools ( I am a reasonably competent DIY er and have worked on big Lorry diesels in the past .
3/ Increase chain capacity to 60 metres and dispense with the rope , so in the event of a breakdown in the viscinity of hazardous rocks we can lay down lots of chain ( we only have 20 metres of chain i believe as standard when we purchased Nemo )
4/ Purchasing a sea anchor
5/ Acquire a VHF radio

Regards Paul and Lisa

 

[Lisa&Paul]

PS .......Forgot to say toss the OB idea overboard

 

[MochiCraft35Fly]

Hi,

Interestingly enough I was considering to buy the boat you own right now ( the ad was out there for a while) . I consulted a very experienced friend of mine about having an auxiliary OB as a precautinary measure and we agreed that 25hp High Thrust would be a reasonable choice. Anything less than that wouldn't do the job.

Considering an investment for 25hp High Thrust I believe it would be an overkill, especially when you have to factor in all the work around making right mounts for the OB as well as not being sure it would work properly. I am not sure you would be able to mount it low enough so that the prop would reach low eough position to be effective. Just my 2 cents

 

[Alicatt]

Where is that picture taken ? Lovely picture.

Thanks, me mam took it, my dad is sitting on the engine cover of the boat, she was not bad to row, I did it a lot when we were on Loch Fyne.
Pic was taken on Loch Morar, it's close to Mallaig. Most years we went there and spent the last week of our holidays there.
This was the island we were on that day, it was an extinct volcano vent and on either side of the little bay you can see there was solidified lava flows, I must go back there it was a very interesting place
Our boat Handy Crinan, Garry the Collie, myself, my dad and Derek my younger brother sadly he passed away in 2006 he was a very keen sailor and a Radio Officer.