Upgrade S/S prop - Yamaha 40HP?

[spartacus]

Hi

Has anyone ever upgraded their standard aluminium propeller on a 40hp engine? My Yamaha outboard is a 1995 (40V), autolube, 2-stroke, 3 cylinder, long-shaft unit.

Normally there are 3 adults on board, fishing gear and around 50 litres of fuel. I'm adding a Tohatsu 3.5hp auxilliary in the Spring - so there's another 15kg of ballast for starters!

Yamaha standard specification is 12 1/4 diameter x 9 pitch (G). I know they have a performance series stainless-steel 3-blade propeller, but it won't be cheap!

Any thoughts?

[Biggles]

Originally Posted by spartacus

Hi

Any thoughts?

Maybe downgrading the prop might be an option with that weight.

Best bet might be to go rouns a few local outboard shops and see if they would be kind enough to lend you a prop to try some different options.

Don't know if that would be an option for you. Only other thing to do is see if anyone else on here has a similar setup to you.

Best of luck NR.

[tinker]

I have used a solas SS 14 pitch on a zodiac 4.2 pro with a 25hp 4 stroke mercury, It didnt run to well reckon 4500 rpm max 24 mph. I have also run an old 2 stroke mariner 40 hp on a flatacraft force 4 with a 15 pitch which ran fine. I would try an Ali 13 pitch prop on yours plenty available on ebay