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Prop sizing 150 Etec 18' Outrage
KahunaBI	#1  Posted on 09/09/15 - 1:00 PM
Member Posts: 3 Comments: 0 Joined: 11/14/12	Well I narrowed down a search for this topic to about 6000 threads:) Im running a 14.5 x 15, 3-blade on my new 150 Etec on a 1989 18' Outrage, taken off old Ficht. Thinking of going to a 4 Blade. I also turn a few 100rpm at the top end more than I should. Hale Propeller recommends a 3-blade 15 x 16, or a 4-blade 15 x 15. Anyone have personal specs on what they are using? Thanks, PC
edmaude	#2  Posted on 09/09/15 - 1:57 PM
Member Posts: 117 Comments: 0 Joined: 07/02/08	I am running a 14 3/4x17 Stainless Viper on my 1983 Outrage 18 with same motor mounted all the way up. Tops out around 5600-5700 RPM and overall it has been a good combo. 1983 Outrage 18 w/ 2014 Etec 150
tedious	#3  Posted on 09/09/15 - 2:49 PM
Member Personal Page Posts: 1072 Comments: 2 Joined: 09/07/08	Kahuna, how are you using the boat? Do you care about top speed, acceleration, grip in rough water, performance with heavy load? I ask because being slightly underpropped, like you are now, might be good for some applications, like skiing. Also, how high is your motor mounted? Tim
KahunaBI	#4  Posted on 09/10/15 - 12:41 PM
Member Posts: 3 Comments: 0 Joined: 11/14/12	Tim, I use the boat in Abaco for daily running around with two to six people. I fish the boat extensively, trolling 6-9kts. Currently have to run rpm's a little higher than I want for troll speed and propping could change this. Also, I would like to run a prop that is efficient and appropriate for WOT. That said, at approx $4/gal, I dont race around to every destination :) As far as the height goes,from memory, it is bolted about an inch higher on the transom than the brackets would rest on. Thanks
Joe Kriz	#5  Posted on 09/10/15 - 1:17 PM
Site Owner Personal Page Personal Album Photo Albums Project Albums Posts: 11447 Comments: 452 Joined: 03/18/05	Motor Mounting Height terminology everyone can relate to and understand. http://www.whalercentral.com/articles...cle_id=106
Phil T	#6  Posted on 09/10/15 - 4:41 PM
Administrator Personal Page Personal Album Project Albums Posts: 7043 Comments: 6 Joined: 03/26/05	Tim asks a vital question, running with 6 people and gear is significant weight compared to 2. The Hale recommendations sound wrong. I concur with Ed's prop choice and Tom Clark (prop guru) has suggested the 14-3/4" x 19" BRP Viper. If you run 4 or more persons a majority of the time I would consider the BRP viper in 15". You should raise the motor up 2 or 3 holes.
KahunaBI	#7  Posted on 09/10/15 - 6:41 PM
Member Posts: 3 Comments: 0 Joined: 11/14/12	Joe, thank you for the height info link. Tim, your recommendation for the 15" Viper, is that diameter? Any input on 4 Blade? I appreciate all the feedback.
Blackduck	#8  Posted on 09/12/15 - 8:32 AM
Member Personal Page Posts: 519 Comments: 0 Joined: 02/25/06	I like the Stiletto, 14 1/4" x 17", up three holes. Walter Reynolds 1973 Boston Whaler 16 Nauset 90 HP Yamaha