Is this suicide?

[lawrence567]

I've been offered a 15hp outboard, my question is, attaching this to a 2.7m sib that's rated to 7hp. Is it suicide? Or will it be bloody good fun?

[LWman]

Bloody good fun! Just check the weight though

[willk]

Bloody good fun at first. Maybe suicide later

My experience suggests that 10hp is all that is needed to explore the limits of a 2.7m SIB (one up). With more weight O/B, a bit of extra power would be nice. The question is, will your transom take the strain? If you pour on the sauce carefully, maybe...

FWIW, I'm seeing over 18kts with my rig, and TBH, the boat feels fine and is controllable, but the water needs to be mirror calm. I would suggest that 15-16kts is the practical max for this type of rig.

I'll let someone else warn you about insurance

[lawrence567]

I'm not going to go mad with it, it'll always be 2 up, if I can get it for a good price I'll buy it and have a go and if it's too much I'll either sell the boat and get something bigger or sell the engine and get something smaller!

[LWman]

Originally Posted by willk

Bloody good fun at first. Maybe suicide later

If your gonna die, you might aswell be laughing when you do! Haha. Agreed a 10s probably plenty on 2.7. But if the price is right.. you can always power down but you wouldnt be able to power up something smaller

[Bigmuz7]

Originally Posted by willk

but the water needs to be mirror calm.

Hehe let it rip .. just make sure you have the kill cord working

[LWman]

..and tied around your wrist! :P With a life jacket on

[kubcat]

In my opinion the only thing to worry about is the transom. Keep an eye to see if it is separating from the tubes while underway. Speaking from experience, if it does separate it will probably start slow at first.

[Screaming04]

Natural selection.

[renegade]

once put a 9.9 old merc on a 2.7 roll up at power it bent the transom down almast to the water line lol but was fun