outboard for 3.3 meter excel inflatable

[chrissd330]

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

[Max...]

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.

[Landlockedpirate]

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.

[chrissd330]

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.

[Landlockedpirate]

Buy the 10 year old Tohatsu, its a better investment than gold

[chrissd330]

How heavy is it?

[Landlockedpirate]

Originally Posted by chrissd330

How heavy is it?

26kg, see weights in my post above.

[Max...]

Originally Posted by Landlockedpirate

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.

[Landlockedpirate]

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.

[chrissd330]

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.

[manonthemoon]

Unless you're planning to trailer this or use launch wheels you'll need your weetabix to lug that about.
MOTM

[chrissd330]

Yes 3 weetabix I should think,its nearly as heavy as our tractor weights at 40 kg,they take some lifting. a 6 hp 4 stroke would be nice but looking on here its a bit under powered ,a light 15 2 stroke probably better,but would like a quiet 4 stroke.
Its going to be a 2 man job i think,may go back to rowing it .
Chris

[manonthemoon]

Yes Chris. Out on Saturday on my own I was getting 16mph on the Garmin. Add my boy to the mix and it still planes. However, another adult and it would be crawling. So the 6 works for me as I'm usually alone and can manage it all myself. The received wisdom on here is the 9.8 Twatsoo but as a novice I wanted something brand new and if that 2 stroke engine is as temperamental as my 2st strimmer then I'd never leave the beach.
MOTM

[chrissd330]

16 mph thats good on a 6 especially if it planes,most of the time i will be out on my own so a 6 would be fine,but if any one else comes i would need a bigger engine like the 9.8 tohatsu 2 stroke or even the 15 as suggested on here.
If i had the 6 hp i would go for a Tohatsu 6 ,4 stroke brand new something reliable.not keen on 2 strokes my chainsaw makes a lot of noise and smokes.

[beamishken]

We've owned a 290 excell dinghy for the last 10 years & had a variety of engines on it smallest was a 5hp yam which would make it plane with myself & a small child but anything more it was down to displacement speed
A 8hp evinrude got it planeing with me and 2 kids no problem and topped out high teens
Best was a 9.9 mercury which planed easily with 2 adults & 2 kids plus gear all 2 strokes.personally I wouldnt consider a 4 stroke for a little boat, too heavy,cant lie them down wherever you want & more to go wrong .you realy wont notice the noise of a 2 stroke once your up and planeing

[SIBer]

I have the same boat and had the same question. I bought a 9.8 2 smoke Tohatsu after a lot of reading and even more searching for one.
Superb engine and nothing like a cheap 2 stroke garden tool.
Weighs 26kg and you can lie on any side which is an advantage for transport and also at the jetty/shore whilst assembling.

[chrissd330]

Thanks to every one on here for all your replies,all very helpfull,although i wanted a light 4 stroke,i am now converted to a 2 stroke,light powerfull,and can be laid down on their side.All I need now is to find a Tohatsu 9.8 2 stroke,not around when you want one.
SIBer how do you like your SD 330,and how long does it take to set up?
Chris

[SIBer]

Originally Posted by chrissd330

Thanks to every one on here for all your replies,all very helpfull,although i wanted a light 4 stroke,i am now converted to a 2 stroke,light powerfull,and can be laid down on their side.All I need now is to find a Tohatsu 9.8 2 stroke,not around when you want one.
SIBer how do you like your SD 330,and how long does it take to set up?
Chris

I love my SD330 and Tohatsu 9.8. The motor was a difficult and expensive purchase but worth the effort.

From all kit in car boot to running on water is 30 minutes with a Bravo HP pump and 12v Yuasa battery.

[John-B]

Originally Posted by chrissd330

Thanks to every one on here for all your replies,all very helpfull,although i wanted a light 4 stroke,i am now converted to a 2 stroke,light powerfull,and can be laid down on their side.All I need now is to find a Tohatsu 9.8 2 stroke,not around when you want one.
SIBer how do you like your SD 330,and how long does it take to set up?
Chris

Inflatable Boat Silver Marine 3 metre with 9.8hp Tohatsu Outboard and Trailer | eBay

be quick though, then sell on the sib

[chrissd330]

Thanks John,just missed it,would have been ideal,as you said i could have sold on the sib.