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115 yamaha prop size
i would like to know if anybody have a 115 yamaha 4 stroke ad what size prop you are using to get the best performance
any suggestions would be great thanks
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love to fish 
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#2
12-26-2011, 09:49 PM
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__________________
*************************************** Stay Safe!  Sold - 1984 V-20 Cuddy with a 2003 Johnson 140 hp gas sippin 4-stroke. 1995 Ranger 250C with a 2015 Suzuki 300 hp 4-stroke.
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#3
02-01-2012, 09:02 PM
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I repowered at the end of the last season with a F-115 Yamaha and I ran a 3 blade 17 pitch alluminum (Yamaha) prop that gave me good results. I tried a 4 blade stainless 17 pitch (Solas) but the cup or something was different and the results were terrible. I purchased a 3 blade stainless Solas 17 pitch that I have not tried yet. With the 17p Yamaha Al prop my top end was 32mph turning 6000 rpm with 5 adults and a 160 qt cooler filled with provisions. I averaged 4 mpg which is a lot better than the 1.5-2mpg that I was getting from the 225 oceanpro. You want to run the 115 four stroke Yamaha on the high end of the rpm range and that motor is a 5000-6000rpm engine. hope this helped.
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1975 V-20 w/1996 225 Johnson
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#4
02-05-2012, 06:08 PM
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Reading Jetty Rockers experiance and adding my experience--I would say a 13 3/8" by 15" stainless Yamaha SSW prop would allow you to get up on plan quickly and haold the plain with a load.
If you have a good prop shop or dealer they will let you try different props before you buy--as long as you do not hit anything for no charge. Good luck--this is a never ending question we all have--can we improve our performance with a different prop.
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 88 V-20200 G2
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#5
05-30-2012, 08:12 PM
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Here's an update to my last post. I ran the 17p Solas SS and I could only turn @5800 but I still ran 32mph. I changed to the 15p Solas ss and got my rpm's back to 6000 but I think I topped out @ 30mph. The way that I use my boat I prefer the higher rpms over the speed. I'm sticking with the 15p for my use. I did notice prop chatter at the low speeds that I didn't have with the aluminum.
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1975 V-20 w/1996 225 Johnson
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#6
05-31-2012, 03:41 PM
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Quote:
__________________
1987 V20 w/1987 150HP Yamaha on a Shoreland'r Trailer 1978 16.5 Airslot w/1996 120HP Force on a Four Winns trailer 1996 V21 w/1993 200HP Mercury on a Shoreline Trailer All towed by a 5.7L Hemi Durango. If God didn't have a purpose for us we wouldn't be here, so Live simply, Love generously, Care deeply, Speak kindly. (Leave the rest to God)  Silence, in the face of evil, is itself evil. Not to speak is to speak, not to act is to act. God will not hold us guiltless.
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#7
05-31-2012, 06:33 PM
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chatter is normal when you go to a heavier prop
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