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Spitfire X7 15p On Mercury 90hp With Tracker V175 Wt

Thread in 'Nitro & Tracker Owners' started by REGGIE RALPH, Apr 22, 2019.

  1. REGGIE RALPH

    REGGIE RALPH Member

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    Spitfire X7 15P on a 2018 Mercury 90hp With 2018 Tracker v175 WT.
    Anyone using this combination ? would like to know what rpm your getting at full throttle .
     
  2. REGGIE RALPH

    REGGIE RALPH Member

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    Tracker boats recommend the 3 blade 14 pitch , I think I will try the Spitfire x7 15p ,the four blade should give better hole shot and the rpm if its anything above 5700 i will be happy. check out the picture from the mercury web site. thanks for the private messages , I will be picking the boat up in about two weeks i will give a update with the results .
     

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  3. Kerz

    Kerz Well-Known Member

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    I had a 4-blade on a 90 hp Merc 17 ft Champion (got the boat used). Performed very well. No idea on the specs.
    Vic
     
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  4. McLoki

    McLoki New Member

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    Will be interested in your results. I have a 2012 v175 combo with a 90 optimax on it and just replaced my 19p blackmax prop with a 17p spitfire.

    Will be awhile before I can test it out, but will report back when I do. BTW 19p blackmax WOT RPM was 5200.

    Michael
     
  5. REGGIE RALPH

    REGGIE RALPH Member

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    This is what I got with a 90hp four stroke using the x7 15p, 38 mph 5500 rpm. I bought a 13p to replace it . getting 5750 rpm and 35.5 mph top speed. Always tested full tank of gas one person 240lbs. fully trimmed before blowing out.
     

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  6. BackCountry

    BackCountry New Member

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    Do you still have the 15P Spitfire? I'm looking for a good used one if you still have it.
     
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