doctorwedge33
Member
Looking to get more top end speed out of motor , currently on boat a Black Max 13.25 x 17 prop on a 2019 Tracker 175 Combo Pro Guide / Mercury 115 hp 4 stroke EXPLT
Prop size for 2018 Mercury 115/ 4 stroke - EXPLT ? Looking for a little more speed....
- Thread starter doctorwedge33
- Start date
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The Mercury website does have a prop selector tool that you can use. You'll need to know the weight of your boat with it's load added. https://www.mercurymarine.com/us/en/propellers/mercury-propeller-selector
From what I see is that the prop has a much smaller pitch that it could take. What is the WOT rpm? As long as you stay within the engine's normal operating range you can get a bigger pitch prop. The best way to find the right prop is a dealership that will let you try out a prop on the water. A good way to select one would be a prop that will be at the mid-range of the normal operating range, for example if the engine has a normal O R of 4700-5200 rpm look for one that would make your wide open throttle rpm at about 4950 rpm. That would allow for a good top end and enough torque for your hole shot.
From what I see is that the prop has a much smaller pitch that it could take. What is the WOT rpm? As long as you stay within the engine's normal operating range you can get a bigger pitch prop. The best way to find the right prop is a dealership that will let you try out a prop on the water. A good way to select one would be a prop that will be at the mid-range of the normal operating range, for example if the engine has a normal O R of 4700-5200 rpm look for one that would make your wide open throttle rpm at about 4950 rpm. That would allow for a good top end and enough torque for your hole shot.
Dan Wilson
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- Feb 13, 2024
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I´m running a 19 pitch on my Optimax 115 on a Pro Guide V175 and get about 5200rpm but only get 40mph. I was hoping for 43. I´m not sure what the red line is on my motor
I´d be curious as to what you are getting top end now. Btw, my hole shot is great. So no issues there, even with a full load on board.
I´d be curious as to what you are getting top end now. Btw, my hole shot is great. So no issues there, even with a full load on board.
Dan Wilson
Member
- Joined
- Feb 13, 2024
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- 17
- Reaction score
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That prop selector came up with the Vengeance 13¨ diameter 18 pitch for me, for top speed and overall performance. I wonder how many mph it would get me? 2? 3?
doctorwedge33
Member
Not sure how to reply , we are still under ice / snow so it will be a little while before boat gets out on the water .
I have read everybody is all keen on the Mercury X7 Spitfire more mph , hole shot and overall performance. Was wondering what exact prop pitch and diameter it is
doctorwedge33
Member
Also it's a 4 blade prop
Your operating range is 5200-5750, you are running at the low end which means your 19 inch is as high a pitch you can use.
The size of your prop should be engraved on it.
Four blade props generally recommended for boats that are bow heavy and heavier overall at a cost of speed. More bite, more drag.
