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Old 18 June 2013, 11:49   #1
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Reliability....aux engine....or not???

Hi all,
being a bit, no, completely new to all this I'm looking for a general consensus over whether auxiliary engines are common or not. I have been gifted a 6hp Yamaha 2t but once it sits on the transom there isn't enough width for it. Now, has anyone else got a Searider, with an A-frame and running an auxiliary engine?

I have a 90hp Mariner on mine now & really, I'd prefer to take more fuel than an extra engine, weight wise.....

Any comments would be appreciated.

Cheers all,
Al.
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Old 18 June 2013, 11:56   #2
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There are some very thin mariner 3.3hp outboards that are worth a measure
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Old 18 June 2013, 12:01   #3
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Engine mount

I made this one for my Searider due to the space restrictions.
The backup engine will be stored behind the jockey seat backrest (custom made for the job) and lifted into place if needed.
Here's a photo of the transom mount, I used a block of 1" thick black polypropylene as the pad and welded 4mm stainless plate to the tube.
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Old 18 June 2013, 13:04   #4
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Nice work Colcreate

Cheers, Squid
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Old 18 June 2013, 13:22   #5
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Now that bracket is do-able! May have to have bash....
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Old 18 June 2013, 13:40   #6
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Quote:
Originally Posted by colcreate View Post
I made this one for my Searider due to the space restrictions.
The backup engine will be stored behind the jockey seat backrest (custom made for the job) and lifted into place if needed.
Here's a photo of the transom mount, I used a block of 1" thick black polypropylene as the pad and welded 4mm stainless plate to the tube.
Nice bracket. Where did you get the thick polypropylene from as my auxiliary pad looks a bit tired and that looks great.
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Old 18 June 2013, 15:00   #7
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Originally Posted by BigDipper View Post
Nice bracket. Where did you get the thick polypropylene from as my auxiliary pad looks a bit tired and that looks great.
Dumpster Diving about 3 years ago, spotted some black and grey pieces in a skip on an industrial estate while visiting a customer. I have used it for all sorts of spacers and stuff. I have very little black left and can't find the grey at the moment.
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Old 19 June 2013, 08:09   #8
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jumping back to the original Q - what do you plan to use the boat for?

I have an aux, but if i'm cruising in company it stays at home. (why lug the weight around when I have 2 or 3 100+HP auxes (aka the other boats) to tow me home?)

I definetely use & test it before departure when I'm cruising alone on the west coast. But for an organised cruise in company a long rope will be more weight efficient!
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Old 19 June 2013, 10:36   #9
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We had an aux with our Merc 90 on an SR 5.4. What a terwat it was. Took it off in the end. If the engine is reliable and you don't go to remote areas, just use your main.

If you go offshore, the aux is pretty pointless anyway. If you are near where others/lifeboats are you should be fine.

Only advantage to an aux really is to keep you from drifting on to rocks etc in rough weather. I mean you are hardly going to go 20 miles with an aux!
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Old 19 June 2013, 14:46   #10
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We had an aux with our Merc 90 on an SR 5.4. What a terwat it was. Took it off in the end. If the engine is reliable and you don't go to remote areas, just use your main.
That's an odd view HP.

Surely the aux is because even an engine that's never failed before today might do, unless there is actually a 100% guaranteed reliable engine (with 100% reliable fuel and electrics).
Quote:
If you go offshore, the aux is pretty pointless anyway. If you are near where others/lifeboats are you should be fine.
again I think thats a bit odd. Offshore = long way from help + potential for big waves. Aux has 2 purposes here (1) keep you pointing in the right direction so you don't broach and get capsized. (2) get you home, or at least stop you drifting further from help. Now capsize is rare, and capsize without 'trying'* is even rarer, but off shore might well = nasty conditions, and might well mean comms are very tricky so expect a long wait for a rescue, and if conditions are getting worse I wouldn't want to be on boat with absolutely no power.
Quote:
Only advantage to an aux really is to keep you from drifting on to rocks etc in rough weather.
well that's certainly one use, and one time that you may not be able to wait for someone else to bail you out.
Quote:
I mean you are hardly going to go 20 miles with an aux!
not that many ribs go 20 miles from A safe haven on their own - although obviously some do. Plenty go 20 miles from home though - an aux will possibly get you into A harbour rather than call the lifeboat. If you are 20 miles from the nearest harbour expect the lifeboat to take probably 4 hrs (maybe more) to come out find you and tow you home. A good aux would have you a long way towards home in that time.

Alternatives to consider:

- can you anchor. Anchoring won't fix your problem buys you time. A long strong rope can be useful for a tow or letting you anchor in deeper water.
- will friends be around. 9d280 makes good point - but if you are relying on others for a tow then make sure you have suitable bridle / towing arrangements.
- SeaStart etc. basically the AA of the sea. This is an option in some areas. They won't stop you hitting rocks or capsizing though so you need to assess the risk for the type of boating you do.

However having been stuck disabled in the middle of a channel as a big ship bears down on you I recommend having options other than a paddle!
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