Little Tinny, BIG Motor

[Nirvana]

80hp on a 4m tinny! Mate you must fly. Have you got any photos? It has got to be a plate boat, you would have folded the transome if it was a press boat for sure? it might be about time to upgrade boat if your thinking a 115.

@kmcrosby78 2 strokes have got more go than 4 strokes. 

I have seen blokes with as big as 60hp on seawasps which are 4m. I have a 30 on mine but would by a 50 if i had my time again.

 

The tinny bashing kids/ adults on the gold coast put massive engines on little tinnys all the time.

 

[Scottj]

Bit of a late reply,but there is a formula that is used to calculate max hp for any boat, according to Australian Standards. AS 1799. Length overall x width of transom at waterline x 16 minus 67 x 1.34. A bit.convoluted I know! With this formula, my 4.3m DeHavilland Tempest can only take 30.9hp, when the builders plate says max hp is 50! I’ve decided to go halfway, 40hp. Maybe a little overpowered, maybe a little underpowered!

Edited October 24, 2021 by Scottj