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Old 13 March 2013, 15:37   #1
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advice on engine choice please!

Please help:
I currently own a bombard aerotec 380 with a Yam 15hp 2 stroke short (37kg). I am selling the Yam 15hp to upgrade as the max rating for my aerotec 380 is a 25hp.
My dilemma is this......do i go for the Yam 25hp 2 stroke short (50kg) good used condition from a dealer/12 months warranty, or do i go for a mercury 20hp 4 stroke short (52kg) brand new from a dealer/5 years warranty. The dealer tells me that the mercury is being used by a lot of race teams and is the engine to have in this class and is also performing better than some 30hp. Ive compared all the pro's and con's of 2 and 4 stroke and still cant decide. I am looking for some much needed advice and knowledge/experience on this issue....where better to look than Ribnet forum
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Old 13 March 2013, 15:50   #2
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Yam 2s. Even more so if you deflate the boat & put it in the boot.
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Old 13 March 2013, 15:55   #3
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I would keep the 15. I upgraded my aerotec 380 from a 15 to a 30 2 str and regretted it. Yes it was faster but I thought the 15 suited the boat better. I'm sure everybody will call me a wimp and that you can never have too much power.
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Old 13 March 2013, 16:09   #4
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there is nothing wrong with my Yam 15, in fact it is mint. I just have a thirst for more oomph and i want to get my lad along on a set of ski's more comfortably. Why exactly did you regret the 30?
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Old 13 March 2013, 16:18   #5
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The boat was a lot more flighty and tiring to control when it got bouncy. It would be good if you could try the 25 before selling the 15.
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Old 13 March 2013, 16:21   #6
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yes....will try that with the dealer. Thanks for the advice
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Old 13 March 2013, 17:43   #7
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yes....will try that with the dealer. Thanks for the advice
You could try your bombard with my yam 25, if we can sort out a suitable date
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Old 13 March 2013, 18:03   #8
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wow thats really kind of you. That would defo sort the decision out. Do you have any plans to get out in the near future? meeting wouldnt be a problem as we are not that far apart
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Old 13 March 2013, 18:11   #9
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I would keep the 15. I upgraded my aerotec 380 from a 15 to a 30 2 str and regretted it. Yes it was faster but I thought the 15 suited the boat better. I'm sure everybody will call me a wimp and that you can never have too much power.
I'm with you. I didn't particularly enjoy my Aerotec with a 25; it was just too much weight to lug about, and in anything but the flattest calm I don't feel any desire to be going that fast in this sort of boat.

A 15hp 2-stroke is the perfect match and will only feel underpowered if you really load the boat up.
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Old 13 March 2013, 18:15   #10
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my pal had the same boat & did exactly the same swap as you for the same reason so his kids could ski it transformed the boat although it was on remotes after the swap I had a go on the skis to "test"it & managed to get up on two skis & even kicked one off although it did bog out a bit if I pulled out for a hard turn on a single ski

Id guess it would be a bit hard work on a tiller though

another friend has a 20hp four stroke merc on a little walker bay he keeps at his house in turkey & we used it for a couple of weeks last year & it wasnt a patch on a two stroke

give me the used two stroke yammy any day
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