Test driving an OB in a dustbin!!

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Bottle_of_Rum

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I want to take my 4Hp OB for a test drive. Is it best to attach the OB to a hefty bench and stand the dustbin beneath. OR bolt a large wooden board to the bin and attach the OB to this?

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Bolting the outboard to a workmate and using a wheelie bin works very well.

I service ours like this most years.

<hr width=100% size=1>/forums/images/icons/wink.gif <font color=blue> Regards Aidy </font color=blue>
 
Find a bit of wood to fit under the rim of a Mk 1 wheelie bin and pretend its a transom. An offcut from a kitchen worktop is just the job.

Don't rev too hard in gear!

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Is the Mk 1 the one with the Alloy Wheels ?

<hr width=100% size=1>/forums/images/icons/wink.gif <font color=blue> Regards Aidy </font color=blue>
 
Agree re the revving - keep it sensible or you may cause damage due to little resistance.
I have fitted an old brew-kit drum tap to the bottom of my wheelie bin ( the neighbours think I am mad). I park the bin over a drain and fill it by hose pipe. The tap allows me to drain away the slightly oily water without getting a hernia due to massive weight of a full bin and without flooding the place with smelly water.
Martin

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I bought a green wheelie bin from Homebase and just hang my 5hp long shaft Mercury off the bin's rim. The weight of the water keeps the bin stable and the plastic is easily strong enough to hold the outboard. I run fresh water through the engine every time I use it and no dents have appeared on the rim of the bin.

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Make a stand, all wood or wooden pad on a metal frame, the right height to dangle the engine in the dustbin. Don't buy a wheely bin specially unless you are really desparate for things to spend your hard earned cash on.

The stand will be useful for maintenance and for storing the engine.

<hr width=100% size=1><font color=purple>Ne te confundant illegitimi.</font color=purple>
 
I use an old 25 gallon plastic drum with the top cut off. I have added a couple of blocks of wood where i clamp the engine on which works well.

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Re: Test driving an OB on a dustbin!!

Of course you could hang the O.B on the outside of the wheelie bin though I fear you'll need a much bigger engine to get it up on the plane!!!! :-) Mike

<hr width=100% size=1>My Mum say's I'm not a fat b@st@rd, just heavy boned.
 
Why not attach one of these earmuff thingies or screw in an adaptor with water hose. Then you just run it. Might be an idea to take the prop off - or just keep your eye on your neighbour's cat!!!

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very easy

Don't bother with fixing it - I just fill up the dustbin - leave the hose running - put the engine in - pull the cord and hold it for a few minutes. This is a 5HP Mariner.

Carefull with the revs - or all the water will leave the bin!

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If the bin is small there will not be enough weight of water in it so you will have to clamp to a bench. I have done that often. If the bin is big enough, and therefore heavy enough, you can clamp to the top of the bin with a wooden board to increase the thickness.

Either way, if your OB is two stroke, you will discover just how much pollution it produces: when you empty the bin it will have a black, oily tide mark. If you want to use the bin for other things, put a bin-liner in before you fill it with water.

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Take the prop off before running - then you wont get drenched.

<hr width=100% size=1>A day not spent on my boat is a day in my life wasted.
 
You are almost bound to have to remove the prop to ensure that you lose the turbulence the prop creates which frequently stops the engine getting coolant.

<hr width=100% size=1>Larry Botheras

Anderson 26 "Amber"
 
When I had a Yamaha fourstroke the workshop manual rcommended a special part that was like a flywheel to replace the prop. It had the weight of the prop without any drive to cause turbulence. It seems a bit like overkill for 4hp.though.

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Personally, I find just putting the thing in neutral is quite a lot easier than removing the prop.

John

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I bought a Mariner the other day and they tested it by putting a screw in nozzle in place of a screw near the prop and connecting it to a hose. This seemed to work well and was a lot easier that a dustbin. I have since then bought one of these nozzles from our local outboard supplier.


<hr width=100% size=1>Dave
Southampton - uk

<A target="_blank" HREF=http://www.MyCleopatra.co.uk>The site for cleopatra boat owners</A>
 
I tested my old Johnson 4 horse the other day. I wanted to check that it would run happily through a complete tank of fuel without overheating, after a clean out of the waterways and new impeller. I put it in a dustbin full of water and started it up. All was fine with a strong spray of water out of the 'tell-tale' holes. However after 25 minutes the revs started to drop, so I investigated and found that the water in the dustbin was very warm indeed! Obviously this was causing a lack of cooling. Has anyone else experienced this? Any suggestions for keeping the bin water cool so that I can give the old thing a more thorough test? Anyone for a large cup of slightly oily tea?

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I normally run the fuel out of the carburettor and lines before storing the motor for any time. As you say the water gets greasy after running for a while (takes a while to run even the carburettor dry but not long enough to heat the water much) and I have wondered what the greasiness does to the cooling passages in the motor.

Daves screw in fitting sounds ideal and while I have seen them for big engines I was unaware that they existed for small ones - will investigate that, thanks.

John

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