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Old 28 September 2010, 17:40   #31
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how did other factors compare? Holeshot, planing speed, time to plane
Dunno. I've never owned a watch.

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it's not always about top end
No, it's not and it's not always about redundancy and manouvrebility either. Twins give better low down torque but more important in a small boat, better lateral stability.
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Old 28 September 2010, 17:44   #32
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Well it had Avon and Searider 5.4m stamped on it....
A bit of 'trick photography' by JSP
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Old 28 September 2010, 17:45   #33
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......and that was what JSP rated it at
Being a welsh person, I thought you would know that the 5.4 was originally rated at 115 til some one who shall remain nameless blew the transom off one by fitting a Yam 130 V4 so the 115 was a compromise
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Old 28 September 2010, 17:47   #34
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OK exploring options here, what are a matched pair of Mariner 40 longshafts worth Elec and manual start, oil injection complete with all cables and controls. Exceptionally tidy condition, been in storage for years.
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Old 28 September 2010, 17:48   #35
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Being a welsh person, I thought you would know that the 5.4 was originally rated at 115 til some one who shall remain nameless blew the transom off one by fitting a Yam 130 V4 so the 115 was a compromise
Was that the prototype model, before fibreglass was invented?
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Old 28 September 2010, 17:51   #36
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Was that the prototype model, before fibreglass was invented?
Silly boy. It was one of Wales finest.

ps Have you measured your 4.7
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Old 28 September 2010, 17:52   #37
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Was that the prototype model, before fibreglass was invented?
Had a CE plate on so would have been a production model?
DM I owe you a pint, come to think of it theys still a bottle waiting here for you from my favoutrite Welshman.
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Old 28 September 2010, 17:53   #38
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OK exploring options here, what are a matched pair of Mariner 40 longshafts worth Elec and manual start, oil injection complete with all cables and controls. Exceptionally tidy condition, been in storage for years.
I'd say around 600 - 700 each. Would suit an SR4 nicely and there's always guys resurrecting them.

The market for selling them as a pair would be limited.
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Old 28 September 2010, 17:53   #39
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Osprey Viper 5.2 with single 100hp = 35 knots

Osprey Viper 5.2 with 2 x 60 = 38 knots

You're right, no contest.



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Dunno. I've never owned a watch.



No, it's not and it's not always about redundancy and manouvrebility either. Twins give better low down torque but more important in a small boat, better lateral stability.
I agree, but you didn't mention that initially, you highlighted the top end performance difference
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Old 28 September 2010, 17:55   #40
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ps Have you measured your 4.7
Could I borrow your tape? I quite fancy owning an SR5.1
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