prop calulator

[genesis08]

I need to change my prop,I have 1977 v20 steplift with a GM inline six cylinder 165hp,omc stern drive.Can anybody advise me on how to work out measurments of my existing prop.[I believe it is the standard 3 blade original]
Thanks...genesis 08 going nowhere,

Regards Brian..........

[Bygracealone]

Brian, a couple of the guys posted these links a while back. They may be a help to you. If not, hang on as I'm sure the guys will have plenty of good advice for you.

Ferm posted this one:

http://www.rbbi.com/folders/prop/propcalc.htm

BS posted this one:

http://continuouswave.com/cgi-bin/propcalc.pl

Steve

[genesis08]

Thanks,B



I will wait and see what happens.Is there anybody out there with the same set up as I have,inline6,omc stern drive etc?

Brian

[macojoe]

14 x 17 was the first prop, it went well and top out out good, but was a dog out the hole.
2nd was a 15 x 15 1/4 It got me up and out the hole fast!! Great when I had a load, but would lose a little on the top end.

Seeing a 70 something V with a 165 I/O had a top end of 30 MPH + or - It was not a big deal to me.

[genesis08]

Thanks mac,

At least that gives me a starting point,I know the diameter is 14 so I will takeit from there.The prop has no splines it uses a pin to secure thru the shaft,that might help a bit further with identification!

Regartds Brian..........

[bradford]

Spareparts deals with alot of I/Os I think, ask him.