Cummings question

BillD

Admiral
Joined
Sep 1, 2011
Posts
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Location
Portsmouth NH, boating out of the mighty Merrimack
Boat Make
25 Terry Jason with Cummins 370 power
What can you expect from a Cummins 210 BT inside a 31 BHM. Not looking for speed obviously but will it push a 31 with a 1500+ load on deck at 10 to 12knts?

H&H propeller, Nautilus propeller, Accutech propeller have big databases of DE boats they have provided props for. There will be plenty of 31 BHM data available plus the performance numbers provided by owners who have 31's here.

If you prop a 6BT 210/220 to reach 2700 WOT with the boat fully loaded with weight you could cruise the 6BT @ 2500 when required.
 
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