Sorting out info to find racing prop for mercury 50 elpt

[ggirf14]

Need to find prop with pitch in range of 20 - 22 for Mercury ELPT 2004 before I decide to buy it.
Problems:
1- Non standard pitch for 50 hp = common listing tools limit options available to 17 in.
2- Looks like I need to search in racing props where the references are no longer based on make and model but on gear housing size and / or # of splines.
3- Mercury dealer cannot pinpoint the info without serial # and #s on the lower gear case.

Questions : Are the following findings reliable?
Big foot version
gear housing size all 4.25?
# of splines all 15?
Gear ratio all 2.32?

Standard version :
gear housing size all 3.44?
# of splines all 13?
Gear ratio all 1.83?

 

[Frank Acampora]

Go onto a site like scream and fly or contact a custom prop maker like Ron Hill. Michigan customer service MAY be able to help some as they used to be one of the big racing prop makers for Mercs.

 

[jestor68]

Go to the Mercury Racing web site and check out a prop designed for 40-60 hp outboards called the T.E. Clever. It's in the prop section.

Mercury Racing also has a motor called the 60 EFI Formula Race that uses a production 1.83 gear case. They have a line of lab finished race props available for it.

These props are not cheap, but they are the best available.

 

[ggirf14]

Thank you Frank Acampora and jestor68. Ron Hill confirmed over the phone he could provide me all versions all would be the same price which is about 1/2 of T.E. Clever props.

Big Thank you again.

 

[ggirf14]

The is also great reading from the scream and fly ref. you gave me.