Auxiliary brackets / engine

dgpw · 24 April 2003, 09:16

For those of you that use and auxiliary engine this is new to me for 3003. Do you keep it on the bracket or bring it in to the rib when going along. My bracket is rated to a 20hp engine and I have a 5hp on it. Will the continual banging damage the bracket in any way, should I be lifting the engine into the boat or is it ok to leave it on the bracket.

Pete7 · 24 April 2003, 09:25

The brackets work well on a yacht at 5 knots, but on a rib at 30 knots, hmm. This has always worried me to the point were I made a bracket and secured the engine on to the deck up the bow out of the way. The transom bracket was only to be used if we broke down.

Pete

dgpw · 24 April 2003, 09:59

This is what I am thinking. Ribs have a habit of falling and in a force 6 + the chances are that the forses will be sidways as well as up and down. I got the biggest bracket I could and my 5hp is very light. But will it work. Lets face it the time that I am most likly to have my main engine fail is not going to be flat calm so do I realy want to be trying to fit an auxiliary over the stern in waves. I have had one 7.5hp go swimming a few years agoand don't want to make that mistake again. has anyone cruised extensively in all weather with their axuiliary on an outboard bracket off the transome.

benjamin · 24 April 2003, 12:44

More theory I'm afraid...... I've heard that a good solution is to mount a hardwood pad directly onto the transom, and then to mount the auxilliary back to front on it, ie with the leg inboard and the weight of the power head directly over the transom. You still have to remove the aux. from the transom in order to turn it around and operate it of course. I imagine also that because of the height of the transom mount only a long-shaft would be able to reach the water in this configuartion .......anyone tried it???

Manos · 24 April 2003, 14:58

I have fitted an aux engine bracket on my RIB.
I have an 8bhp Mariner permanently on it whether I do 1 or 50 knots.
To secure the engine so that it does not vibrate I have tied a rope from the end of the engine to the top of the A-Frame. This holds the engine tightly and had no problems (so far that is).
Many other friends of mine have done the same thing and still no problems. So is safe and provided that your bracket can hold the weight of the aux engine you will be OK.

JCW · 24 April 2003, 15:42

I mount a 6HP Mariner 4 Stroke direct to the transom. I tighten the tilt fixing bolt to stop excessive bounce. Have had no trouble with over 2000 miles covered on the Rib.

JCW · 24 April 2003, 15:57

Picture showing Auxillary Outboard.

dgpw · 24 April 2003, 16:14

Fantastic thanks everone this is what I was looking for. The rib conference will be the trial for the bracket. See you all there.

crazyhorse · 24 April 2003, 17:15

This is whats happening for the bigger boats.No lifting in a bad sea,not to be recomended.

crazyhorse · 24 April 2003, 17:28

Manos · 24 April 2003, 17:45

Don't get it CH

Alex Brown · 24 April 2003, 17:49

Initially I was going to have a bracket fitted to my rib, which Humber were going to do before I got it.
However, after looking at the width of the boat, and measuring a few things up, Humber cut a small section of the transom away, which made an ideal place to mount the aux engine.
It's a 4hp long shaft 4-stroke engine, and the plate above the prop is actually spot on at the bottom of the hull, so I couldn't have asked for anything better. It's held on by the usual 2 hand screw things, plus 2 bolts that go through the transom and keep it well and trully tight to the boat.
A bad picture of it can be seen here - http://www.ribseadrive.co.uk/gallery..._0322_154600AA
don't think I have any other pics of it on the website.

-Alex

crazyhorse · 24 April 2003, 19:20

Hi Sorry about the small picture,Its a Honda 20 hp wing engine bolted to a special carrying bracket for a 3 ton boat on the transom. It is low enough to keep the engine out of the water at speed but can be put down,when required as its permanently attached by the two screw Thingis and bolted, and the base of the leg is cliped so it cant move, eg shake itself to death,when in the out of water position.
We have a Honda 30 hp long shaft elec start, Wing engine and you will not catch us dancing across the deck with that baby as it weight is 72kg.

Its permanantly fixed aft .

If your using a heavy outboard as a wing engine There is no way in a big swell it is easy to fix it on the transom then.

It will be good to whatch somebody trying to though from the safe distance of your own boat

Manos · 24 April 2003, 19:56

Agree CH