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#11
05-22-2005, 04:54 PM
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Re: yamaha 150 4-stroke prop?
Bobber, I run an aluminum prop because because I tend to hit rocks while I'm hunting stripers in shallow water. How many mph does alum vs. SS tend to cost?
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'86 20 ft CC with 4-stroke 150 yamaha 
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#12
05-24-2005, 07:50 PM
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Re: yamaha 150 4-stroke prop?
HatTrick - I agree with Briguy . . . Just looking at the pics it appears that your engine is mounted a little low.
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#14
05-25-2005, 01:51 PM
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Re: yamaha 150 4-stroke prop?
Hatrick, I'm with Trayder on this one. What little more you'll get from a SS could cost a ton in the rocks. [img]/images/graemlins/crazy.gif[/img]
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Bob 72 20'CC
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#15
05-27-2005, 09:35 AM
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Re: yamaha 150 4-stroke prop?
I'm not that concerned about speed but I am concerned with making sure the rpms etc. are right for the life of this new motor. If others with 20 footers are getting 50 mph at WOT (5500 + rpm) how much of a difference does the alum prop and the mounting hole location make to me? 40 mph is fine with me. Is it worth messing with the mounting holes this season (it's become too short already).
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'86 20 ft CC with 4-stroke 150 yamaha
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#16
05-31-2005, 07:47 AM
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Re: yamaha 150 4-stroke prop?
What are you measuring your speed with? Water pressure or GPS? My Teleflex speedometer says 32 mph when my GPS says 40 kts. It's WAY off. From what I've read about the new Yam 150, I think you should be getting mid-40's at that RPM.
But if you're happy with performance out of the hole and RPM's, I wouldn't mess with it a whole lot. I usually cruise at about 25 kts anyway [img]/images/graemlins/smile.gif[/img]
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Common Sense is learning from your mistakes. Wisdom is learning from the other guy's mistakes. Fr. Frank says: Jesus liked fishing, too. He even walked on water to get to the boat! Currently without a SeaCraft  (2) Pompano 12' fishing kayaks '73 Cobia 18' prototype "Casting Skiff", 70hp Mercury
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#17
05-31-2005, 04:42 PM
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Re: yamaha 150 4-stroke prop?
I took the speeds off the GPS. We don't get many opportunities for WOT in Buzzards Bay so cruising speed is probably going to be 35ish anyway.
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'86 20 ft CC with 4-stroke 150 yamaha
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#18
06-14-2005, 08:32 PM
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Re: yamaha 150 4-stroke prop?
Thought you might be interested in this thread.
http://www.thehulltruth.com/forums/t...654725#M654725
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