Marine Propeller

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simonbbt

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I have located a rebuilt prop for my Johnson motor. However, my existing prop is 12 1/4 X 15 and this one is 11 1/4 X 17. The price is right and I want it only as a spare. Can someone advise what effect the smaller size and pitch will have on my motor, if any. Boat is 16 1/2 aluminum Pro Fisherman and motor is 50 HP.



Thanks
 

Rkb53

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Your boat will be slower and your engine may not rev high enough putting an undo load on the power head.
 

curtis james

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hmm boats off topic, not sure if your can plane easy or not, a 16 with a 50 is close depending on your load but changing blades and pitch helps ya get on plane easier but ya loose on top, my 17 with a 90 pulls quick a alumaweld talon so light, my 19 stryker i went to a more aggressive pitch same blade to pop plane faster but my top speed was less, my 20 intruder i went up a blade but i have a bravo 2 drive so it sat way lower under boat so pushes to plane quicker and gave me more top speed but it has a big motor, it is for ocean and columbia river. getting to plane allows you to glide on top and takes load off motor so your not fighting wake. having a spare blade is great, make sure ya have nut and pin, i have heard guys loose there props and had spare but no nut. if ya bend from something its way better to have one. i would put it on and try it and see how your boat runs and decide which one ya want to run. way easy to change.
 
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