What Diameter prop for 5S O/B tunnell hull ?

[Andris Golts]

Hi all im in the process of setting up my Dunlap 30'' W.O.F tunnel hull for 5S power for components i have a 5S 5000 mah 50c lipo a Swordfish 220 amp + esc a Leopard 3674 1900 KV motor mounted on a O.S. Max .21 lower unit . What diameter and pitch props would be a safe start with out destroying anything ? Regards Andris Golts.

[HTVboats]

I would stay in the 40-43mm range. X or M440 442 and GR 42X55. I have used a cut down M445 t0 43mm and X642 on the big end. Those will stress the setup so run a short time and check temps plus MA used. Have a retrieve boat gassed up and you will be upside down in short order.
Mic

[JestDanny]

x440 should be a good starting point for first shake down runs. For a higher pitch prop the P-215 might work out its just a bit smaller than a X642.

[Andris Golts]

Thanks for the great information. Regards Andris Golts.