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Old 17 March 2010, 17:39   #1
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Country: UK - Wales
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Make: Avon SR 5.4m
Length: 5m +
Engine: Yam 90
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will a 50HP four be enough for a SR5,4

Hi,

I'm looking at either an 85/90 Yam 2 stroke for one of my Avon seariders but wonder how well she'd go with a Honda 50 4 stroke as there's a new one at a bartgain price. Alternatively can anyone advise on the fuel consumption for an 85/90 Yam 2 stroke not wide open on the throttle stops.

Thanks Steve PS Commercial SR5.4 going up for sale soon if anyone's interested.
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Old 17 March 2010, 17:52   #2
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Make: Avon SR4,Tremlett 23
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Engine: Yam 55, Volvo 200
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I've got a 55hp pn my SR4 and it goes well, I would think you'd need more on a 5.4.
If you have a search it might have been mentioned before?
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Old 17 March 2010, 17:57   #3
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Quote:
Originally Posted by chewy View Post
I've got a 55hp pn my SR4 and it goes well, I would think you'd need more on a 5.4.
If you have a seatch it might have been mentiobed before?
Hi, what do you mean by seatch? Sorry for appearing thick. Steve
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Old 17 March 2010, 18:00   #4
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Country: UK - Channel Islands
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Make: Arctic 28/FC470
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I think she means search
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Old 17 March 2010, 18:04   #5
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I did, fancy putting the keys soo close together!
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Old 17 March 2010, 18:12   #6
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and I got away with my little "typo" even thought the s and the h are nowhere near each other!
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Old 17 March 2010, 18:47   #7
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Country: UK - Scotland
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Boat name: Sula
Make: Ribcraft 4.8m
Length: 4m +
Engine: Tohatsu 60hp + aux
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Quote:
Originally Posted by Laverdasteve View Post
Hi,

I'm looking at either an 85/90 Yam 2 stroke for one of my Avon seariders but wonder how well she'd go with a Honda 50 4 stroke as there's a new one at a bartgain price. Alternatively can anyone advise on the fuel consumption for an 85/90 Yam 2 stroke not wide open on the throttle stops.

Thanks Steve PS Commercial SR5.4 going up for sale soon if anyone's interested.
The Honda 50hp 4-stroke will move the SR5.4, but I can't help but feel you'll be disappointed with its perfomance. Any idea how many people will be on board, what you plan to do with it (diving, fishing, etc)?

The Honda 50hp probably weighs in at 101kg compared to the Yamaha 90hp 2-stroke (109kg). Incidentally there are a couple for sale at http://www.billhigham.co.uk/submit_f...=used outboard or www.outboard-services.com (Isle of Man)

Yamaha (4 cylinder) and Suzuki (3 cylinder) are offering new 60hp 4-strokes out soon (if they're not already launched) which will only weigh 110kg. The next engines in the 4-stroke range (the F80 and F100) weigh in at a massive 170kg, just under the maximum weight you can stick on a 5.4.
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Old 18 March 2010, 03:10   #8
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Country: UK - England
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Engine: Yam 2st 90
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DON'T do it!

I got my boat with an old 'rude premix 60 on and while it went it was not half as much pleasure to drive as it is with the 90 I now have. Incidentaly now I use LESS petrol and oil than I did with the 60 as I am not having to drive it so hard.

If you look around the forum most 5.4 owners have 80 to 90 on the transom with a few having a 70 - 75.

If you have any intention of going out with more than just yourself on board and/or towing toys the 50 will really struggle to get you out of the hole.

BTW welcome to the fun world of ribbing.

Ian
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Old 18 March 2010, 03:28   #9
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I had an Avon d5.6 and it required two 50 hp Hondas to make 30 knots with two onboard and a 96 ltr fuel tank. The engines and rib were 1998.
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Old 18 March 2010, 06:07   #10
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Canlt help out with the 5.4 comments, but to add to the soup:

My old SR4 had a 25. it went "ok", but not particularly fast, and with absolutely no more than 2 aboard.

Many moons ago on a Sportsboat course (shows you how long ago it was! ) they had an SR5.4 with twin 30s. (standardised on Yam 30s on all boats in the centre) Unfortunately they were the last two premix engines on site, and the week before one of them got a drink of neat fuel. Net result was that we used it 4 up with a single 30. It went, it planed, but it was a " bring a good book" moment.......

So if you are getting it for a song, it will probably get you by.
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