1994 Yamaha 40 hp

[Duffy.yyz]

Originally Posted by MattMigues

I am running a 13p 3 blade on my 50hp, 15/52 custom semi v 36-37mph so I'd say you're right there. I've read every 10hp you should get 5-7mph more on same hull.
I bought a Tinytach for 2 stroke engine I'm running light load 5700 and heavy 5550. Also keep in mind if you drop motor you will lose a little speed.

I dropped it an inch and got another 2 mph.

[Andy C]

Originally Posted by Duffy.yyz

I dropped it an inch and got another 2 mph.

The prop has to be in the water to make it go!! If you just want a "good spary" you got it and you can run around looking cool" ?? For some reason that's the new yeti,Costa balls hanging from the truck that's never been hooked up to a trailer fad!!!

[B-Stealth]

Originally Posted by Andy C

The prop has to be in the water to make it go!! If you just want a "good spary" you got it and you can run around looking cool" ?? For some reason that's the new yeti,Costa balls hanging from the truck that's never been hooked up to a trailer fad!!!

Lol, dude I just Goodled "spary" thinking it was some kind of new Nautical term I was unaware of. And when nothing came up from the search...

Spray.....

It looks like your engine will run pretty high, judging by your spary.

[Andy C]

Originally Posted by B-Stealth

Lol, dude I just Goodled "spary" thinking it was some kind of new Nautical term I was unaware of. And when nothing came up from the search...

Spray.....

It looks like your engine will run pretty high, judging by your spary.

Glad I made your day trying to look it up!!! Lol lol
it was put that way for a reason, cause it's going to be the big fad!! Just wait an see.

Back to op, cc advice is spot on, no prop will give you great hole shot and speed, depending on what/where you plan on using it the most is your prop you need. Again rpm would be nice to know while your trying to figure that out..

[MattMigues]

Originally Posted by Duffy.yyz

I dropped it an inch and got another 2 mph.

way to high then... I started mine low and went up and gained until it would blow out dropped 3/8" and handles great. I'm no guru but Cajunchristian is the man with the plan! and PS put kill switch on