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Old 04 May 2014, 17:03   #1
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outboard for 3.3 meter excel inflatable

I am looking to get an outboard engine for my 3.3 meter excel inflatable,what size should i get,main use will be for fishing 1to 3 adults,would 6hp 4 stroke be ok ,don`t want anything over 30 kilos.
Chris
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Old 04 May 2014, 17:34   #2
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Depends on typical usage and if you need to plane or not. If not and you're happy at displacement speeds (around 6 kts) then a 6 hp 4 stroke will do nicely. If you need planing speeds 10 kts + then you'll need a 2 stroke 15 for 3 adults. Lightest weight is the Mercury Mariner at 34 kg.
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Old 04 May 2014, 17:42   #3
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Do a forum search for 2 stroke V 4 Stroke on a sib.

A 6hp will be fine to push the boat at hull speed, it might even get a single light weight helm on the plane. But to be interesting and get it planeing with 3 adults +gear on board you are going to need more grunt.

Holy grail would be a 2 stroke Tohatsu 9.8 at 26kg,other sub 30kg options would be a Yamaha 8hp 2 stroke (26kg). But if you can manage to lift a little more you can get a 2 stroke 15hp (Yamaha, Mercury, Mariner, Evinrude)which all way in around 35kg.The 15hp will be a much better match for your boat.
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Old 04 May 2014, 17:42   #4
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Thanks for your reply,I have been looking at a Tohatsu 6 hp 4 stroke 24 kilos in weight,and a 10 year old Tohatsu 9.9 2 stroke not sure of the weight of this one need to keep the weight down.
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Old 04 May 2014, 17:48   #5
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Buy the 10 year old Tohatsu, its a better investment than gold
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Old 04 May 2014, 17:54   #6
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How heavy is it?
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Old 04 May 2014, 18:00   #7
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Quote:
Originally Posted by chrissd330 View Post
How heavy is it?
26kg, see weights in my post above.
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Old 04 May 2014, 18:17   #8
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26kg, see weights in my post above.
Not the 9.9, it's much heavier than the 9.8, the 15 hp weighs the same. The 9.8 is 26kg.

A 9.8 and three typical adults is borderline puffless for planing.
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Old 04 May 2014, 18:31   #9
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Sorry, missed the .9 bit You are correct, its the same block as the 15 and 18,

The 9.9 weighs 37kg which is chunky for a 9.9, but its also a great motor to uprate at reasonable cost.

If you uprate it to 18hp, it becomes the lightest 18 around.
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Old 05 May 2014, 16:21   #10
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just been looking at a yamaha 9.9 fmh 4 stroke 37 kg approx,bit heavier than i wanted but about same weight as a 9.9 2 stroke tohatsu.not sure what to do,the extra power would be better but more cost.but being a 4 stroke much quieter.
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