treypescatorie

I have a newly installed suzuki 200 hp on a boston whaler 21 conquest . What prop do you recommend
?

GeneralPropeller

Hi Trey,

We would be glad to try and help you out. Have you run the boat with the new engine yet? If so, what prop did you use, and what WOT speed and RPM were you able to achieve?

Typically we would recommend either a Mercury Enertia Eco or Powertech 3 blade LFS for this application. I would estimate either an 18 or 19 pitch, but would lean more towards the 19. If you have any current performance data you can share that would help us confirm the pitch size. We do have the Enertia Eco 16 X 18, Eco 16 X 19, and LFS 16 X 19 all in stock.

We also have a demo prop program and have the Enertia Eco 18 and 19 available. Shortly after the new year we should have the LFS 19 available for demo. If you have any interest in the demo program please give us a call and we would be glad to discuss the details.
(941) 748-1527.

Thanks

treypescatorie

Thanks for the reply. I have not run the boat yet with the new engine and was looking for a starting point.

treypescatorie

I have a prop from my old engine, its a mirage plus 48-18278. Can I start out with this prop?

GeneralPropeller

Treypescatorie

This describes as a 15 1/2 x 17 Mirage. This might be a light starting point since your gear ratio is 2.59:1. I believe is better to start with a 16 x 19 either Enertia Eco or Powertech LFS.

You can try it to see what you get rpm wise.

Let me know if further questions!

treypescatorie

What would you recommend for a 4 blade prop?

GeneralPropeller

If you wanted to go with a 4 blade we would probably recommend the Powertech LFS 4 blade. Did you have a chance to run the boat with the new engine? If so what prop did you run, and how did it perform?
I would think either the 17 or 18 pitch

Thanks

treypescatorie

I decided to go with a 14.5 by 19 powertec. As per the recommendation of a local prop shop. I got thru most of the break in period for the engine. My max rpm spec on engine is 6k. When I went to give if full throttle it went above 6k. It looks like it would go well beyond, but I throttled it back. While maintaining 6k the speed was 33 mph. Based on this info, what would you recommend?

GeneralPropeller

Hi Trey, Is the Powertech you purchased the SFS? Also is it a 3 or 4 blade? We would still stick to our original recommendation of either the LFS 3 Blade 16 X 19 or Enertia Eco 16 X 19. Because of the gear ratio and application you will most likely need the larger diameter. You should see an increase in performance and efficiency going to the larger diameter. If you wanted to go 4 blade then I would say the LFS 4 16 X 18.

We now have all the props mentioned above available in our Demo Inventory. It's $50 per prop to test them out, but when you buy one the demo fees are credited towards your purchase. There is a little more information on our website if you are interested. https://www.generalpropeller.com/Demo-Prop-Program

Thanks,