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Author Topic:   Two more prop questions
kamie posted 09-04-2004 08:41 PM ET (US)   Profile for kamie   Send Email to kamie  
I finally got the correct pitch dialed in for the prop on my 18 Outrage with 1995 150hp Merc. I settled on a basic aluminum 17p Mercury prop. At WOT with a full tank of gas and me she spins 5600 ~ 5700 RPM's. That puts it at the very high end for the engine but I decided to go for the top end of the range because when I carry friends the boat really tanks getting up on plane. So after spending months swaping props and testing and having the boat/engine checked out I finally got things dialed in. The I hit something, not hard but bad enough to ding my nice shiny alumnum prop. If I reprop with a stainless prop should I keep the same pitch or would I need to start the testing all over? What change in running should I expect running the dinged aluminum prop until I either go with stainless or get the prop fixed?

If you want to follow the saga from the top you can read all about it here:

gss036 posted 09-04-2004 09:34 PM ET (US)     Profile for gss036  Send Email to gss036     
Kamie, during all your playing around with props, I have a quick question. Did you notice more lugging at idle speeds in no wake zones? Why did you go back to the alum prop?
I ask these questions because I just went from a 14 1/2 X 17 on my 89 200 Merc. Same prop as the alum one, but I notice a little heavier lugging at 4-5 knots while in the harbor. Preformance stayed close to the same as the old prop, the SS does have more cup to it than the alum. It does show some rust marks inside the cuped area, I suspect this has to do with the materials Mercury used. It is about a 1988-89 propr but new.
kamie posted 09-04-2004 10:01 PM ET (US)     Profile for kamie  Send Email to kamie     
I started with an aluminum prop on the boat. It was on there when I bought her and I was going to switch to Stainless but I had some problems, unrelated to the prop. Since I was going to buy one, I figured I would go with the aluminum since it's cheaper than stainless. That way if I didnt' have the right prop but messed up the prop so it was in an unreturnable condition I wouldn't have lost so much money.
gss036 posted 09-05-2004 01:48 AM ET (US)     Profile for gss036  Send Email to gss036     
Camie, thanks for the quick response. I ended up with the stainless because of E-Bay. I was able to get it for about 1/2 the price of a new alumn.
kgregg posted 09-05-2004 08:58 AM ET (US)     Profile for kgregg  Send Email to kgregg     
I recently bought stainless prop on Ebay for my Outrage 19 with Merc 135. Your alum prop will always get dinged. Don't worry about that though. You can get prop machined and made as good as new for about $50. Kevin
Yiddil posted 09-06-2004 05:58 PM ET (US)     Profile for Yiddil  Send Email to Yiddil     
Yep! I saw it..Its dinged:)))hehe But boy does she run nice , ding and all:) We were all out yesterday on the Potomac...and Kamie, she looks great running and passing the "DasBoat!!:)

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