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ContinuousWave: Whaler Performance
What prop ? 19' Outrage with 175 Merc
|Author||Topic: What prop ? 19' Outrage with 175 Merc|
posted 09-09-2002 07:48 PM ET (US)
Can anyone give me an idea as to what size prop I should try with my 175 Merc on a 1973 19' outrage.
Thanks in advance
posted 09-09-2002 07:58 PM ET (US)
Here is the process for deducing the proper pitch propeller:
1. Determine the total boat weight
Let's say your total boat weight is 2400#.
Now determine the lower unit gear ratio and the maximum engine speed, let's say 2.0 and 5500 respectively. Use thepropeller calculator to determine the pitch needed.
Enter 5500 RPM, 2.0 Gear ratio, Slip = 8%, Speed = 48.
The calculator answers with PITCH = 20 inch.
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