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Author Topic: prop advise for Merc 40hp 4 stroke  (Read 787 times)

hookum243

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prop advise for Merc 40hp 4 stroke
« on: January 03, 2013, 01:06:32 PM »

I have a bass tracker pro team 170 tx and it has a merc 40 hp 4 stroke, i have a 13.5 x 26 standard prop and motor is rated to go at an rpm of 6000 max. i am looking to get up on plane quicker and pick up some speed without going over 6000 rpm's i am currently maxing out at 5700 trimmed all the way and about 31 mph tops , would like to run about 35mph. Can i achieve this by going to a 16 pitch prop stainless instead of my 13 aluminum??? or what else could i do that wont harm the motor but get me more speed
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Brummo

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Re: prop advise for Merc 40hp 4 stroke
« Reply #1 on: March 29, 2013, 07:43:12 AM »

That 26 seems like a lot of pitch for a 40 HP motor. I have a 13X19 on my 75 Optimax. I may be reading this wrong too.
« Last Edit: March 29, 2013, 07:46:13 AM by Brummo »
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2011 175 TXW: 2011 75 HP OPtimax, Clarion CMS1, Humminbird 597 CI HD DI, Minnkota 55# trolling motor

http://www.youtube.com/watch?v=eaSMxP0KlBY

Brudd

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Re: prop advise for Merc 40hp 4 stroke
« Reply #2 on: March 29, 2013, 07:57:25 AM »

That prop size has to be e either a typo or measured in something other than inches.
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Skip531

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Re: prop advise for Merc 40hp 4 stroke
« Reply #3 on: May 24, 2017, 06:15:52 AM »

Your numbers don't sound right .  Check the mounting of the motor. Too deep you drag, too high you get cavitation.  My hole shot improved immensely and my overall speed as well. My motor runs extremely efficient and I blow away the same boats with larger hp.
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