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Message board > Engines > Which Engine long, medium or short shaft

Message 14 of 14
Posted by member Peterboo on Monday 16 June 2008

lve got an extra, 2 gear boxes on the engine on my auxillary ,to make it reach past the bottom of the hull for stopping the boat, with the bracket down as low as possible, beore it was on, the engine was just thusting off the stern and not doing anything. hardy ms 20 or 21

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Message 13 of 14
Posted by member Ian Moody on Monday 23 April 2007

interesting to read all comments,would it be possible to get away with a standard lengh shaft on hardy 25.I have adjustable sprung bracket on port side transom also central bracket on bathing platform. appreciate advice.ian

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Message 12 of 14
Posted by member Charles Clarke on Thursday 8 June 2006

Dominic and Nicola. Thank you for your reply and advice re the auxilliary engine. It is good have some idea of which engine to get and we are grateful to you for your help. Charles Clarke

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Message 11 of 14
Posted by member Dominic And Nicola Gribbin on Thursday 1 June 2006

For the average river conditions i.e not tidally strong, 4 hp will suffice as an aux. In fact we use one as our coastal cruising auxillary (a yamaha 4hp 4/stroke). It will however only allow you to crawl home in favourable sea conditions. So for sea work, many people suggest a 5 or 6hp aux. For the Pilot a long shaft is required and yes, it is adviseable to steer from the main helm, not from the auxillary. With the aux. locked off straight, the rudder efect from the larger main o/b should be perfectly adequate to steer with. However, crusing under the auxillary can be a tricky business. Everything takes longer/helm far less reactive. Well worth some practice. Hope that helps Dominic and Nicola.

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Message 10 of 14
Posted by member Charles Clarke on Monday 29 May 2006

I am thinking of purchasing an auxilliary engine for my Hardy Pilot. Could someone please tell me if a 4hp 4-stroke would be suitable for river use and should it be long or short shaft. Also, is it possible to steer the boat with the steering wheel or would the steering be solely dependent on the auxilliary engine.

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Message 9 of 14
Posted by member Mick Haslam on Friday 9 September 2005

James I had no problems with insurance I had four quotes all happy with 90HP I chose Bishop & Skinner at about £300

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Message 8 of 14
Posted by member David Walker on Sunday 28 August 2005

I am wishing to buy a Hardy 25 outboard version and am looking for advice on what power options I should consider.She will mainly be cruised on inland waters,but I would like to take her to sea occasionally. David.

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Message 7 of 14
Posted by member James on Thursday 25 August 2005

Boat Insurance Putting a 90 HP on the back of a Hardy under 30 foot Mick? I would love to know who is prepared to insure you even for 3rd party!! James

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Message 6 of 14
Posted by member John Terry on Sunday 21 August 2005

I am replaceing a elderly Johnston 50 hp in my Hardy pilot. what sort of performace can I exspect from a 25 hp four stroke. economy more important than speed.but would want to counter tide in river of upto 3 knts.advice please. John

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Message 5 of 14
Posted by member Mick Haslam on Monday 27 June 2005

Hi Barry I have a Bosun [at maylor ] with a 90hp honda good for over 30knts if you would like to have a look please give me a ring on 07721 754374 I will be in Mylor this weekend

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Message 4 of 14
Posted by member Angtus Geddes on Wednesday 15 June 2005

Hi Barry, It depends! If you are useing at sea most members seem to agree go for as much HP as possible - i.e 75hp. I changed a Honda 50 last year for a Tohatso 70 and the performance differance is amazing... OK it uses more fuel but I figured that the cost differance between a new Honda 75 and a new Tohatsu was a lot of petrol. Some of the new direct injection 2 strokes are reckoned to be comparable to 4 strokes in fuel consumption. My ideal engine would probably be a Honda 75. but needs must. Less that 50 hp will be unlikely to get the Pilot to plane unless you run it flat out and that defeats the object in terms of fuel economy. Engine should run at about 80% max revs for efficiency. The 2 stroke oils up if run at low revs for long ... you can get round this if in a speed limit by knocking out of gear and opening up the idleing throttle. I do this on return to the mooring which means a half hour run up the Frome at 4 knots at about 2000 rpm. or if desperate after the engine starts to choke a bit. The 2 stroke is noisier than a 4 stroke. 2 strokes (except direct injection models are less fuel efficient than 4 strokes. Diesels are most fuel efficient but don't come easily in outboard form. 2 strokes are generally lighter than 4 strokes. for long range or frequent use get a 4 stroke (or a diesel) sell the 9.9hp to someone who wants an engine for river use... see other threads! WEDGES. would someone please explain the diamentions of the wedge idea and their placement under the engine mounts? Happy Hardying. Angus

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Message 3 of 14
Posted by member Barry Vasey on Wednesday 15 June 2005

Thanks Angus thats a great help! can you help me with the shaft length issue too please? Barry

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Message 2 of 14
Posted by member Dominic And Nicola Gribbin on Wednesday 15 June 2005

The Pilot requires a long shaft version of outboard to efficiently drive the vessel forward. This will apply as equally to a 9.9hp as a 75hp or anything between, 2 or 4 stroke. Dominic.

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Message 1 of 14
Posted by member Barry Vasey on Tuesday 14 June 2005

I have (subject to a survey) purchased a 1990 Hardy Family Pilot 20. It is at Falmouth and has as its main engine a Yamaha 9.9hp outboard. This is my first boat and I am seeking advice from members about spec of a replacement engine. People are talking to me about the length of the shaft(don't know which is suitable for the Hardy) and 2 stroke v 4 stroke and so I am asking for your advice please. Barry Vasey

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