Propeller

C

cva34

Recruit
Joined
Apr 12, 2009
Messages
3
Bought Merc 50hp 2003 going to install on 93 Superior Alu. slight V (Jon boat style)with tunnel and pontoons.Boat is 16f with 60" bottem, normal load would be 600#..It came with NO PROP .Any sugestions for Dia.X Pitch for a starter PROP???. Never owned a Merc.so I do not have a feel for there sizeing..THX.. cva34
 
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Maxz695

Guest
Re: Propeller

I was running a 10/58 X 12 prop on my 40 HP this was about the right pitch for the bass boat 17.5 feet. An 11 P wasn,t enough and the 13 P was under RPM Now I have a 70 HP with a 14 P which seems pretty good. Because your boat seems lighter then mine I would consider about a 13 P. The motor has enough power to push with that and possibly even a 14 P depending on the weight and the amount of people you bring out with you. your looking to get around 5500 RPM. No more than that and no less than 5000. If this is a jon boat with the three cross member aluminu bench seats that is a light boat for a 50 HP you may be looking for a 17 to 21 pitch for that.
 
Last edited:
JB

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: Propeller

Howdy, cva.

Welcome to iboats. :)

I think this will do better in the prop forum. I will move it there.
 
C

cva34

Recruit
Joined
Apr 12, 2009
Messages
3
Re: Propeller

Maxz695 said:
I was running a 10/58 X 12 prop on my 40 HP this was about the right pitch for the bass boat 17.5 feet. An 11 P wasn,t enough and the 13 P was under RPM Now I have a 70 HP with a 14 P which seems pretty good. Because your boat seems lighter then mine I would consider about a 13 P. The motor has enough power to push with that and possibly even a 14 P depending on the weight and the amount of people you bring out with you. your looking to get around 5500 RPM. No more than that and no less than 5000. If this is a jon boat with the three cross member aluminu bench seats that is a light boat for a 50 HP you may be looking for a 17 to 21 pitch for that.
Click to expand...

Its not like your last sentence,,It is rated for 60HP THX cva34
 
jestor68

jestor68

Commander
Joined
Jun 12, 2012
Messages
2,308
Re: Propeller

I suggest you run your numbers through the Mercury Marine(on their wed site) prop selector to get a recommendation.

A quick shot using the limited info provided yielded a 13 or 14 pitch, depending on the style of prop.

Answering the sticky above; providing all the info you can, will help us make an informed recommendation.
 
P

pootnic

Chief Petty Officer
Joined
Aug 11, 2007
Messages
447
Re: Propeller

My ballpark guess would be a 14 or 15.
2 stroke or 4?
 
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