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New to me Outrage II Propeller questions
trimark1024	#1  Posted on 07/03/13 - 2:01 PM
Member Posts: 7 Comments: 0 Joined: 05/06/13	Recently sold my 1975 20' Mako and purchased a 1996 Outrage 17 II. I realize they are very different boats but I think the Outrage will fill my needs better at this point in life. I wanted a newer, smaller hull that I could transfer my Mercury 150 Opti Max onto (300 hours). The OptiMax was were the value was in my Mako package and I would not be able to recoup $$ if I sold it. I have really enjoyed the Outrage so far but have some questions about the prop I am using. Same prop I had on the Mako and I'm thinking it is not correct now. At WOT it is getting 5000 rpm and am going approx 42 mph with a full tank of fuel and myself (normal load). I use the boat primarily for fishing, usually by myself. Don't really care about going fast, more concerned about fuel mileage and that I don't damage the motor. Prop I have now is stainless steel and has 5054 19 stamped on it. I have researched this a bit and think it is a Quicksilver Silverado prop. The motor is mounted to the second to the top hole and has a 25" shaft. Closest links I have found to what I have: http://www.whalercentral.com/forum/viewthread.php?thread_id=17560 Outrage I, maybe motor problem not propeller http://www.whalercentral.com/forum/viewthread.php?thread_id=15491 Actually this link is for a 1986 Outrage 18 Any suggestions or recommendations regarding proper prop selection would be appreciated.
Tom W Clark	#2  Posted on 07/03/13 - 2:53 PM
Member Personal Page Posts: 4280 Comments: 7 Joined: 09/30/05	Back in the late 1990s Whaler installed a 15-1/2" x 19" MIRAGE propeller on the OptiMax 150 when used on this boat, so that suggest the boat should be quite a bit faster than 42 MPH. Indeed, factory test data I have shows 48-50 MPH for the Outrage 17 II with 150 HP. The Quicksilver Silverado is the QS branded version of the Mercury Vengeance. It is a 14" x 19" three blade of an old design. It is not a very good propeller at all. The motor should be raised at least one bolt thole and a better propeller used, but that does not explain why the boat is so slow now.
trimark1024	#3  Posted on 07/04/13 - 7:04 AM
Member Posts: 7 Comments: 0 Joined: 05/06/13	Tom, Thank you for the reply/info as I am not understanding about the whole propeller setup, never had to deal with it before. Couple more questions you raised, The motor is now on the second to highest hole if I do this: motor should be raised at least one bolt thole it will be on the very top hole, is that correct? Also, when I google "15-1/2" x 19" MIRAGE" I only come up with 15-1/4" x 19" MIRAGE, what's the difference and do they still make the 15- 1/2" anymore, are there other props that you would recommend? And lastly, what else could be making the boat slower if not the prop? Isn't 5000 rpm at WOT a little low? What could cause this? I know, a lot of questions, thank you for any info/advice you can give me.
Tom W Clark	#4  Posted on 07/04/13 - 7:25 AM
Member Personal Page Posts: 4280 Comments: 7 Joined: 09/30/05	Scrivener's error, it a 15-1/4" x 19" MIRAGE that was used. That propeller has been superseded by the 15-1/4" x 19" MIRAGEplus, which has more cupping and uses the Flo-Torq style square bore hubs. By your decription, the motor is now mounted with the bolts going through this hole: o o <-- bolts through this hole in mounting bracket o o o But I think it should be mounted here: o o o <-- bolts here o o Or maybe even here: o o o o <-- bolts here o You could also try the 14" x 19" Mercury Enertia which might be better fit for your boat.
Tom W Clark	#5  Posted on 07/04/13 - 7:31 AM
Member Personal Page Posts: 4280 Comments: 7 Joined: 09/30/05	There are all sorts of things that can make a boat slow. The aforementioned foil/fin is one (though you do not have one), rough bottom paint, not trimming the motor out at WOT will prevent the hull from breaking free and kill speed. But if the cause is from the motor it can be caused by the loss of spark to a cylinder or two. This motor, running on five of six cylinders will sound fine but produce a corresponding loss of power. There could also be a problem with the fuel delivery system of the OptiMax. It is extremely unlikely throttle cables or throttle throw have anything to do with it, though you often hear people imaging that is their problem.
trimark1024	#6  Posted on 07/04/13 - 5:47 PM
Member Posts: 7 Comments: 0 Joined: 05/06/13	Tom, Again thank you for all your help. Don't want to over due the questions but I can see that you are the person to ask. When looking at propellers on line I see right hand and left hand rotation, counter rotation which do I need, how can I tell? Your description of which hole I have the motor mounted into is spot on. I understand what I must do as far as repositioning the motor. Last 2 prop questions, which of these props would you choose if using the boat as I do (above on this thread)? 15-1/4" x 19" MIRAGE, 15-1/4" x 19" MIRAGEplus, 14" x 19" Mercury Enertia? What effect does having a 15-1/4 or a 14" diameter make. All three of these props have a 19 pitch, is that correct? Gonna open another thread with an unrelated question similar to the question asked in this link. http://www.whalercentral.com/forum/viewthread.php?thread_id=4987 I am having the same issue but don't understand the solution. Hopefully you will be able to help me there also
Tom W Clark	#7  Posted on 07/04/13 - 7:32 PM
Member Personal Page Posts: 4280 Comments: 7 Joined: 09/30/05	I would start with the Enertia for a boat that size.
trimark1024	#8  Posted on 07/05/13 - 4:30 PM
Member Posts: 7 Comments: 0 Joined: 05/06/13	If the prop I have on now is the Quicksilver Silverado 14" x 19" how much difference will there be with the 14" x 19" Mercury Enertia prop? I have been reading abut the material Mercury’s X7 alloy the Enertia is made of but how will that directly effect the handling of the boat?
Tom W Clark	#9  Posted on 07/05/13 - 5:28 PM
Member Personal Page Posts: 4280 Comments: 7 Joined: 09/30/05	Propellers are not generic pieces of hardware that can be described simply in terms of diameter and pitch. The Silverado and the Enertia have completely different blade geometries. There is a world of difference between them.