Thread subject: Whaler Central - Boston Whaler Boat Information and Photos :: Prop sizing 150 Etec 18' Outrage
Posted by KahunaBI on 09/09/15 - 1:00 PM
#1
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
Posted by edmaude on 09/09/15 - 1:57 PM
#2
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.
Posted by tedious on 09/09/15 - 2:49 PM
#3
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
Posted by KahunaBI on 09/10/15 - 12:41 PM
#4
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
Posted by Phil T on 09/10/15 - 4:41 PM
#6
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.
Posted by KahunaBI on 09/10/15 - 6:41 PM
#7
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.
Posted by Blackduck on 09/12/15 - 8:32 AM
#8
I like the Stiletto, 14 1/4" x 17", up three holes.