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Prop choice
Rosie the welder	#1  Posted on 06/22/10 - 10:29 AM
Member Posts: 3 Comments: 0 Joined: 04/24/10	I have a 13' SS Ltd 1987 Whaler witha 2002 40 hp 4 stroke Johnson .Currently swinging a 11 3/8 x 14 3 blade alum. Tachs out easy at 5800 rpm with 2 people an 5 gals of fuel What are the rest of you guys running ? Thanks
Ric232	#2  Posted on 06/22/10 - 5:38 PM
Member Posts: 194 Comments: 0 Joined: 05/11/08	2008 130 Sport with Merc 40 4-stroke swinging Merc Black Max 3-blade aluminum 10.25x 14P. Around 6000 rpm at WOT with two people. Assuming the operating range for your motor tops out at 6000, it sounds like you're propped perfectly.
Tom W Clark	#3  Posted on 06/23/10 - 8:07 AM
Member Personal Page Posts: 4280 Comments: 7 Joined: 09/30/05	Different motors have different WOT RPM ranges and different gear ratios. You cannot conclude anything about the performance of a propeller on one motor based on how it performs on a completely different motor. Rosie -- What is the recommended WOT RPM range for your motor? What is the gear ratio of your motor? What is the top speed of you boat at WOT?
Rosie the welder	#4  Posted on 06/24/10 - 3:53 AM
Member Posts: 3 Comments: 0 Joined: 04/24/10	5800 rpm is recommended . I do not no gear ratio. Top speed i think is 35 to 40 mph