30ft Racing Cat 143MPH Looking for Propellers!

[Juanpi13]

Hello Everybody,

My name is Juan Martinez, I'm currently trying to help a friend Dr. David Parra who owns a 30ft Custom Made Racing CAT called Daddy's Money that will be participating in one of the longest powerboat event in the world called "Nuestros Rios Son Navegables" this is a 7 day endurance race in the rivers of Venezuela, ending in a 65 mile sprint to the finish. One of the biggest challenges of this event is making it to the last stage of the race, that is where you set the boat up for serious racing. This 30ft CAT is currently holds the record for being the fastest in that 65 mile sprint doing it in 28 minutes and 32 seconds.
This boat is powered by 2 x 900 HP Sterling Engines and is equipped with Arneson Drives.
When the boat reached its top speed of 143MPH it was using 16.5 X 39 Rake 16 at 5800 RPM.
We believe we would need to use 17 x 39 Rake 16 or 17 x 38 Rake 16 to get a higher top speed at less RPM.
anyone has those propellers for sale or would like to trade in for a couple of 16 x 40 Rake 15 Mercury Racing in very good conditions?

Any comment or advise will be greatly appreciated.






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[FUJIMO]

...juan, you will have a little better luck with your larger sized propeller needs over on www.offshoreonly.com

[rgsauger]

also try http://forums.boatfreaks.org/

[rarias]

juanpi,

This might help.

https://www.mercuryracing.com/prop-slip-calculator/

https://vicprop.com/planing_size_new.php