model boat propeller size calculator
They are engine rpm, prop gear ratio (normally for 1.5 to 3.0), prop pitch (the distance that a propeller would move forward in one revolution), prop slip (the efficiency of the prop, lower at high speed, but perhaps very inefficient at low speed) and the boat speed in mph. enter any 4 variables and the 5th variable will be calculated.. Vicprop, marine propeller specialists. propeller selection . we currently have two prop size calculators (below), along with a collection of "conversion" style calculators to aid in determining various weights and measures relating to propeller selection.. To specify the correct type and size of propeller, a standard set of boat, engine and gearbox measurements is required. designers will use the boat’s length, beam, draught and displacement in combination with the boat’s underwater drag characteristics to calculate hull resistance.. 
model boat propeller size calculator Refer to your boat operator's guide to determine the gear ratio of the boat's power train. if the ratio is 3:1, you will only need to use the first number, "3," to calculate the pitch of the prop. calculate the approximate pitch of the prop by dividing the number of rpms indicated by the boat's tachometer by the gear ratio of the boat's gear box.. Mercury propeller selector. find your ideal mercury prop in 5 steps or less. sport series. mirage plus, high five, trophy sport, vengeance, laser ii, black max, bravo two. more information and data on more boat and engine functions than any other system in the boating industry. single-engine controls . mercury single-engine controls are.
