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

[REGGIE RALPH]

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 .

 

[REGGIE RALPH]

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 .

 

[Kerz]

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

 

[McLoki]

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

 

[REGGIE RALPH]

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.

 

[BackCountry]

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.

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

 

[McLoki]

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

the 17p spitfire WOT RPM was about 5600. I did lose about 3MPH top speed but the tradeoff in holeshot and holding in turns made it well worth while. I do not plan to go back to the 19p Black Max.