Wanted to buy used 13 1/4 x 15 propeller for Yamaha

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Author Topic:   Wanted to buy used 13 1/4 x 15 propeller for Yamaha

koaman posted 05-29-2009 02:34 AM ET (US)
I'm looking for a 13 1/4 x 15 propeller for a Yamaha 90 perferably stainless steel. I have a 13 1/4 x 16 and only get 5100 rpm @ WOT and want to try something else. Thanks
Waccamaw Whaler posted 05-29-2009 05:17 PM ET (US)
I have a 13 1/4 X 15 SS TURBO I, Part No. T-13215-R that I run on a Yamaha F90TRL.
I'm not getting a full 6,000 RPM with this either but I get 40.3 mph max (GPS) under ideal conditions with my 17' 1993 Outrage.
I was considering going to a 13 1/4 X 16 for more speed but from what you're saying that may not be a good choice.
I may be going out this weekend and I'll try to remember to get my max RPM. If I had to guess, I think I'm getting around 5,500 RPM.
Waccamaw Whaler posted 05-29-2009 05:18 PM ET (US)
I have a 13 1/4 X 15 SS TURBO I, Part No. T-13215-R that I run on a Yamaha F90TRL.
I'm not getting a full 6,000 RPM with this either but I get 40.3 mph max (GPS) under ideal conditions with my 17' 1993 Outrage.
I was considering going to a 13 1/4 X 16 for more speed but from what you're saying that may not be a good choice.
I may be going out this weekend and I'll try to remember to get my max RPM. If I had to guess, I think I'm getting around 5,500 RPM.
Waccamaw Whaler posted 05-29-2009 05:19 PM ET (US)
OOPS!
Sorry I don't know what I did there.
koaman posted 05-29-2009 06:11 PM ET (US)
We have compleatly different set ups so my numbers will be different. Max rpm for my 90 2 cycle is 5500 and 6000 for your 90 4 cycle. It is said that 1 inch of pitch difference in similar propellers will change the rpms approx 150-200. If you are only getting 5500 rpms you may want to go smaller not bigger. Try the propeller calculator and see how the numbers come out.
http://continuouswave.com/cgi-bin/propcalc.pl

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Author	Topic: Wanted to buy used 13 1/4 x 15 propeller for Yamaha
koaman	posted 05-29-2009 02:34 AM ET (US) I'm looking for a 13 1/4 x 15 propeller for a Yamaha 90 perferably stainless steel. I have a 13 1/4 x 16 and only get 5100 rpm @ WOT and want to try something else. Thanks
Waccamaw Whaler	posted 05-29-2009 05:17 PM ET (US) I have a 13 1/4 X 15 SS TURBO I, Part No. T-13215-R that I run on a Yamaha F90TRL. I'm not getting a full 6,000 RPM with this either but I get 40.3 mph max (GPS) under ideal conditions with my 17' 1993 Outrage. I was considering going to a 13 1/4 X 16 for more speed but from what you're saying that may not be a good choice. I may be going out this weekend and I'll try to remember to get my max RPM. If I had to guess, I think I'm getting around 5,500 RPM.
Waccamaw Whaler	posted 05-29-2009 05:18 PM ET (US) I have a 13 1/4 X 15 SS TURBO I, Part No. T-13215-R that I run on a Yamaha F90TRL. I'm not getting a full 6,000 RPM with this either but I get 40.3 mph max (GPS) under ideal conditions with my 17' 1993 Outrage. I was considering going to a 13 1/4 X 16 for more speed but from what you're saying that may not be a good choice. I may be going out this weekend and I'll try to remember to get my max RPM. If I had to guess, I think I'm getting around 5,500 RPM.
Waccamaw Whaler	posted 05-29-2009 05:19 PM ET (US) OOPS! Sorry I don't know what I did there.
koaman	posted 05-29-2009 06:11 PM ET (US) We have compleatly different set ups so my numbers will be different. Max rpm for my 90 2 cycle is 5500 and 6000 for your 90 4 cycle. It is said that 1 inch of pitch difference in similar propellers will change the rpms approx 150-200. If you are only getting 5500 rpms you may want to go smaller not bigger. Try the propeller calculator and see how the numbers come out. http://continuouswave.com/cgi-bin/propcalc.pl