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Old 06 April 2012, 14:10   #11
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hi,

thanks for all the replies. Appreciate the point about cost of fuel versus initial outlay. however, I think the time has come to start looking in earnst for a suitable modern replacement--wanting to be kind to the sea/environment and all that. Soumds like I'm looking at either a 60 or 70hp 2/4st. I hadn't really considered YAM as a friend had mentioned all the parts were very pricey. that said, I'll do some digging on the internet and see which specification/model ticks all the boxes, if there is such a thing!
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Old 06 April 2012, 14:12   #12
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A 75 Etec will sit nicely on there. Sips fuel &oil, light, powerful & 3 year/300hr servicing, works out at less than 100/year.
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Old 06 April 2012, 14:35   #13
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Any advantages of the 75 over the 60, apart from the obvious of a little more power, but that is somewhat set off against the just from 138 to 113kg??
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Old 06 April 2012, 15:20   #14
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I have a 60 Etec on my 5.4 Air-Craft and it's great on fuel and I average 31 knots, top speed 34 knots the difference between the two is the 75 is three cylinders as opposed to two and only 500 difference. Your call
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Old 06 April 2012, 17:36   #15
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What's the weight difference captain?
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Old 06 April 2012, 17:51   #16
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What's the weight difference captain?
Etec 60 109kg Etec 75 145kg
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Old 06 April 2012, 18:42   #17
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Any advantages of the 75 over the 60, apart from the obvious of a little more power, but that is somewhat set off against the just from 138 to 113kg??
I have the Yamaha 60 2st on my 5m Bombard and it goes really well but only weighs about 106Kg 2003 model and 3Cyl. The few long runs I've done show it to be probably more economical than I expected at approx 0.6Lt at 25knots. I doubt you would realy notice any difference if you got a 70 as these add nearly 40kg of weight for the extra little power although the new Yamaha 70 is light too as already mentioned.
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Old 06 April 2012, 19:28   #18
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Couple of Jura fueled thoughts- if your boat is full of dive gear, is that weight difference going to be proportionally significantly different? If it is, Clamshells only weigh 85kg.....
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Old 06 April 2012, 20:21   #19
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I have the Yamaha 60 2st on my 5m Bombard and it goes really well but only weighs about 106Kg 2003 model and 3Cyl. The few long runs I've done show it to be probably more economical than I expected at approx 0.6Lt at 25knots. I doubt you would realy notice any difference if you got a 70 as these add nearly 40kg of weight for the extra little power although the new Yamaha 70 is light too as already mentioned.
Yam 60 & 70 2-strokes are the same motor. The 75 is bigger (& heavier), same as the 90.
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Old 07 April 2012, 10:38   #20
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Any advantages of the 75 over the 60, apart from the obvious of a little more power, but that is somewhat set off against the just from 138 to 113kg??
As already said, the 75 is a 3 cyl against the 2 of the 60. The 75 is well regarded & considered a "strong" engine pushing out well over its 75hp rating. The extra cylinder gives more torque than the modest 15hp increase suggests. AND it's a 2 stroke
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