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Old 20 June 2004, 12:27   #1
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Country: UK - England
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Fitting Auxillary Engine

Please can anybody offer advice on fitting an auxillary engine to my Humber 6.3 Extreme

Sue at Humber has advised me that the transom will take the engine but has warned me that she knows of several incidents of auxillary brackets breaking because of the pounding that Ribs take at sea.

Roy Webster
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Old 20 June 2004, 12:56   #2
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Put a sacrificial plate on the transom so it wont damage the transom, and then have the engine in the boat rather than hanging over the back. (if you have the room). You can then put an eye bolt or somthing simular in the deck to tie the leg of your spare engine down.
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Old 20 June 2004, 14:06   #3
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This is how Scorpion do it on an 8.1m with an outboard. The bracket is bolted directly to the transom. The auxiliary engine is stored in the transom locker and will be hoisted into place via the A frame if needed. The long shaft Suzuki does take up a lot of room in the locker but we think there is less chance of damage with this arrangement.

If you have room I would recommend this approach. Hope this helps?
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Old 20 June 2004, 14:34   #4
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Hello Roy,

Yeap, I had the same from Humber (Andrew in this case) when I got my Destroyer from them a year and a half ago. Initially I had ordered a stainless bracket, but with some modification on the transom, it now takes my long shaft 4hp 4-stroke Suzuki engine properly, and it's bolted through the transom too, which in theory makes it stronger.
I keep the aux engine lifted whilst travelling along, and when looking back in choppy conditions, the thing shows no sign of being thrashed around too much.
Look here for rough pic:-
http://gallery.ribseadrive.co.uk/lif..._0322_154600AA
and
http://gallery.ribseadrive.co.uk/pem..._0830_103201AA

-Alex
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Old 20 June 2004, 19:20   #5
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Alex


Thank you for your advice this looks the best option as there is not a lot of deckspace for an engine.

Roy
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Old 21 June 2004, 06:12   #6
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Aux Engine

Alex,

From the pics I can't see wether its bolted onto some sort of bracket - or just straight through the transom. I like the idea of setting mine up like yours (i.e. always there), but am wary of brackets and their ability to break unexpectedly!! I'm also wary of my ability to drop things, especially an engine whilst trying to get it onto aforementioned bracket....while at sea....when I REALLY need it......

Dylan...
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Old 21 June 2004, 18:02   #7
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Just bought an aux engine last Friday and have put it staight on the transom.

I figured that when I am most likely to need the aux engine is just about the time you least want to be hanging off the back end of the boat trying to fit an outboard.

I also made sure that I had an additional source of fuel, just in case the problem was with the main tank. I got the 6hp Suzuki (heard somewhere 1hp for every meter) and it has a biult in 1.5 ltr tank and I got a 22litre plastic tank as well.
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Old 22 June 2004, 01:35   #8
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Suzuki 6hp

Just to say have been running the Suzuki 6hp on my SIB since March and it is a brilliant piece of kit. No problems at all, sweet runner. Will be using it as the aux on my 6.5M Solent is due course.

Quote:
Originally Posted by gingercoastie
Just bought an aux engine last Friday and have put it staight on the transom.

I figured that when I am most likely to need the aux engine is just about the time you least want to be hanging off the back end of the boat trying to fit an outboard.

I also made sure that I had an additional source of fuel, just in case the problem was with the main tank. I got the 6hp Suzuki (heard somewhere 1hp for every meter) and it has a biult in 1.5 ltr tank and I got a 22litre plastic tank as well.
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Old 22 June 2004, 11:03   #9
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suzuki 4hp.

i am going through the same problems at present with my boat, which is fitted with 140 suzuki.
i have been told by ribcraft that i can bolt the 4hp straight onto the transom
with a bracket. i want to the use the engine as a tender propulsion as well as a backup .the longshaft would not be suitable for a tender but equally the standard shaft would not be so efficient without an engine bracket due to the propeller being near the surface of the water!
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Old 22 June 2004, 11:45   #10
DGR
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Aux...

I was thinking the same thing - use it both as an aux and for a tender. However, the long/short shaft requirement does rather make each suited for a different purpose. Also, for my Ribcraft I'll need an 8HP (using the 1HP per metre rule that seems popular) - and it needs to be quite a big tender to cope with that.

Therefore, I've decided that I'll get the aux for the rib, and some paddles when I get the tender, and face the fact that I will have to do some exercise. Having said that, rowing in to the shore has got to beat swimming in, which is always the other option!!

D...
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