prop selector from mercury

[xo4001]

Found this on the web

http://www.mercurymarine.com/propellers/prop-selector/#

maybe its helpfull for some members
also want to ask if there some one who want to test this with there existing setup

will wait and see the results

[ace3]

it's neat but you get really different results if you change the variables just a little. I would need to know what a 22-2 CC weighs with an old 2-stroke merc 125 to get the right prop answer. Anybody have an opinion?

[fitz73222]

Hi Ace3,

Your 125 is rated at 5250 rpm max. They make lots of torque but Mercury kept these motors tamed at a lower rpm. You have a 2+2 engine like my 115's. Idles on two cylinders; the other two kick in at 1800-2000 rpms. They are great for trolling and really get some decent fuel economy at idle. You have a 2:07 to 1 gearatio. I`m pretty sure a 15 or a 17 pitch is going to work for you. If your partial to Mercury props, the Vengence is a good all around prop. I really like the Stilletto props and are less expensive than the Mercury offering. Make sure you keep this engine in the 5000-5200 rpm range at full throttle. As for weight, if you have a pre- CCP 22-2; 72-76 they were advertised at 1850# dry weight. Like all of them she has probably put on a little weight since new.

[ace3]

Oh my yes, it's a 1973, and seems heavy. Thanks for all that great engine information. i don't need a prop yet but now I'll try it out and see if it runs at the right rpm.