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Author Topic:   Calling on SuburbanBoy for prop specs
15ftlover posted 03-10-2004 03:37 PM ET (US)   Profile for 15ftlover   Send Email to 15ftlover  
SuburbanBoy originally posted 3-2-2001 concerning your 4 stroke mercury 60hp on 15ft striper. That is the combo now hanging on my boat but I need to pick a prop. I am told a 10inch diameter 17" pitch is recommended. You mentioned 4 blade on your boat, any experiences to relate? I have a 10" dia 15" pitch SS leftover from my old 40hp (used to get me @ 33mph). Usual load would be three adults, mostly cruising/fishing some skiing. Anyone else have input?
Sal DiMercurio posted 03-10-2004 04:02 PM ET (US)     Profile for Sal DiMercurio  Send Email to Sal DiMercurio     
Hen, there's no reason at all to put a 4 blade prop on that boat.
A 60 hp with a 3 blade will blow you out of the hole so fast, you wont have time to even say Wow!
The only advantage of a 4 blade over a 3 blade is hole shot & thats it.
A 4 blade will put you on plane about 1/2 second faster then a 3 blade & will steal a couple of mph from your top end.
If you put a 4 blade on, try a 3 blade of the same size to compare, my bet is you wont see the difference except the 4 blade will be about $200 more.
15ftlover posted 03-10-2004 04:58 PM ET (US)     Profile for 15ftlover  Send Email to 15ftlover     
Thanks for the input, having had a 2stroke that weighed @190lbs going to the 250# four stroke I wanted to use my old SS prop. Do you think the 15inch pitch is to low for the 20hp increase? My dealer has ordered a 17inch pitch
LHG posted 03-10-2004 06:50 PM ET (US)     Profile for LHG    
Sal - Mercury has recently come out with a small gearcase 4-bladed Trophy Sport prop, and I hear it's pretty quick when compared to the conventional elephant eared SS props usually used on these smaller engines. Whether it's right for this rig I don't know.
Sal DiMercurio posted 03-10-2004 07:58 PM ET (US)     Profile for Sal DiMercurio  Send Email to Sal DiMercurio     
15lover, try it first before you order a new one.
I would certainly think that 60 hp should be able to twist a 17p on a 15 ft boat.
LHG, I know merc has been jumping ahead of everyone in quite a few areas, they are on it, thats for sure.
But I still doubt he needs a 4 blade on that rig.

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