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Old 21 July 2009, 17:17   #11
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I wouldn't have thought it would.
He said if you found the heaviest 4 stroke that the SIB was rated to then find the most powerful 2 stroke of the same weight it would be fine.
Makes sense.


I'm not sure either to get 15hp 2-stroke and be within proper "hp rating" or get 25hp mercury 2 stroke and be within proper "weight rating".

I'm torn between these two choices now..

Do you think it id difficult to handle 50kg motor on and off the car trunk to the lake (100m or so) put onto the transom while boat is in the lake, then do the same backwards when done????
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Old 21 July 2009, 18:02   #12
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and for another few KG you can have a premix 2- stroke 60!!!!!
Happy Days!
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Old 21 July 2009, 18:09   #13
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Do you think it id difficult to handle 50kg motor on and off the car trunk to the lake (100m or so) put onto the transom while boat is in the lake, then do the same backwards when done????
if you are significantly stronger than me it might be possible. My engine is 48 kg and I can only just get it on/off the transom myself on dry land. I wouldn't even try it with the boat "wobbling" afloat. And if I had to do it every time I used the boat I would probably use the boat a lot less. You would need some sort of trolley to move it 100m.
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Old 21 July 2009, 18:33   #14
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I reckon you should fit twin 25's.

Thrills aplenty, and it'd be much easier carrying a balanced load over 100m. One engine in each hand. ;-)
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Old 21 July 2009, 19:04   #15
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Balanced load, it is so sane idea, omg!


On my other boat, I used to have 10hp Johnson 2 stroke long shaft, I guess 35kg or so, I used to carry this motor on and off quite easily. 50kg is only about 50% more weight, quite a lot.....

I guess I should try a demo of motor carrying somewhere
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Old 22 July 2009, 05:35   #16
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Do you think it id difficult to handle 50kg motor on and off the car trunk to the lake (100m or so) put onto the transom while boat is in the lake, then do the same backwards when done????
In a word - yes! I have a similar story with a '72 vintage Johnson on a small hard boat, and I can assure you 50Kg of engine is not a problem to carry 5 or 6 metres, (I fitted my Merc 60 single handed), but outboards are probably the most bog awkward shaped thing to carry....... But then as Polwart says, a trolley cured the problem nicely!

The difference in size between a 10 & a 25 also puts the mass further out from you, making it even more b awkward to lift.
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Old 22 July 2009, 06:43   #17
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I've got a Yamaha 20 2 stroke. It is listed at 49kgs dry, and I wouldn't want to lift it more than 30-40ft, and certainly not onto a wobbly boat!

It gives plenty of go on my 380 HD Quicksilver which weighs 100 kgs, about the same as me!
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Old 22 July 2009, 10:09   #18
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Anyone knows, what kind of spped can you get with 15hp vs 25hp?

In kph/mph
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Old 22 July 2009, 10:26   #19
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Get some pneumatic launching wheels so you can use the outboard you want without having to worry about how miserable it would be to carry it across a sandy beach. Set the boat up beside your car/truck, install the wheels, then install the outboard, and roll the rig to the water's edge. Just make certain that they are the big, pneumatic, 'overkill style' wheels so they can be used on a variety of surfaces (not just showroom floors).
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Old 22 July 2009, 10:31   #20
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"Anyone knows, what kind of spped can you get with 15hp vs 25hp?"


If there is any kind of ripple on the water, and the boat is not heavily loaded with gear, a 25 hp 2 stroke on that boat will bounce you clear out of the boat long before you get anywhere close to WOT.
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