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Drink good beer!
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153 Posts
Discussion Starter · #1 ·
I have a 93 merc 25hp 2 stroke and needs a new prob. I'm running a 15ft rebuilt johnsen skiff and have no idea where to start. Help please!
 

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Hooking Lips is my life
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199 Posts
http://www.tinytach.com/tinytach/index.php First you need to buy one of these to check your RPMS
 

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Drink good beer!
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153 Posts
Discussion Starter · #3 ·
Thanks Chasing Tale, going to order one tomorrow unless I can find one locally.
 

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Cert. Yamaha technician
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4,330 Posts
Slightly native: i think i saw you yesterday when i was goin over the jupiter lighthouse bridge. Were you out?
 

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Drink good beer!
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153 Posts
Discussion Starter · #9 ·
Ok, finally installed the Tiny Tach. Actually had to send the 1st one back because it didn't work. Took the boat out yesterday and got some numbers. WOT rpm's were 5820 and ran aprox 25mph with a full load on the boat(2 people, fishing gear, gas and trolling motor. Im happy with the speed but would like alittle more bow lift, boat has a wet ride and that would help. The prop I have now is a 13pitch but is really beat up. Recomendations on what prop to get? 3 or 4 blade?
 

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Drink good beer!
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153 Posts
Discussion Starter · #11 ·
Reasoning for your recommendation? What is the advantage of the smaller pitch?
 
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