PDA

View Full Version : s.s.prop size

steplift20
06-18-2005, 10:09 PM
im reaching out to the w.w.w and this is what i need to know
I need to know people who are running a steplift with a 150 mercury outboard and using a stainless steel prop, what is yout rpm and how fast are you going
its a 1988 merc black max
macojoe
06-18-2005, 11:34 PM
Heres a site that might help you??

http://www.miwheel.com/MIWheel/html/products/outboard/PSearch.asp
steplift20
06-29-2005, 10:57 PM
sorry to tell you but that site sucks
i gave them all of info and they said i should run a 23 inch prop
nuts
Vic
06-29-2005, 11:00 PM
I think 14.5 to 15 about 5400.
Skools Out
07-08-2005, 04:10 AM
I'm running a 15 x 17 stainless on my V20 with a 225 Johnson and get 5600 RPM at 47 to 50 MPH. So i would say a 17 pitch most likely for a 150 as well. you can run a 15 pitch and gain 200 to 250 more rpms than the 17 pitch but it will slow you down about 5 mph but give you more take off power with faster plane. good luck
Blue_Runner
07-08-2005, 11:31 AM
Hey Skool - Welcome to the site :D It's me, Shane from Lexington.

You didn't even know this little world existed did you ;)

There's a lot of V20 owners on here. Use the search function at the top to search for information regarding different projects.

Welcome to your 2nd home! I see you are already providing valuable input!
steplift20
07-29-2005, 08:36 AM
15x17 aluminum god also
/?
steplift20
08-30-2005, 11:55 AM
but if i tach out at 5800 prms with a 13 1/4 x 19 inch pitch on my s.s. prop wouldnt a 15x17 inch make it tach out at a higher prm>
reelapeelin
08-30-2005, 07:15 PM
Step, next question is, "what does mfg state max rpm to be?
"...if 5800, then you got the right prop...if 6000, then you can stand a lil' less PITCH... :)...
Seacrets
08-30-2005, 09:39 PM
I have a 150 hp v-6 mercury and I run a 14 1/2 x 17" pitch SS four blade prop. I turn 5500 rpm at 43 mph (GPS). My three blade prop is about the same, however just a tad faster top end. With the four blade you come out of the hole right now.
steplift20
08-31-2005, 10:57 PM
thats what i wanted to here
i think the 13 1/4 x 19 does broing me to the rpms but the 15x17 will do that too because the diameter is bigger so i wont get cavitation like i do now and better mileage
thanx