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Author Topic:   S.S. Prop
NausetBoy posted 05-03-2004 05:02 PM ET (US)   Profile for NausetBoy   Send Email to NausetBoy  
I would like a S.S. prop for my Nauset powered by a Yamaha 100 Four Stroke. I want to have a good top end speed, and am willing to give up a little acceleration. I have the stock prop right now and am toping out at 6000 rpms, right on the mark, I would like to keep it like that. What is a good brand? What pitch and diameter should I use? I know nothing about props so any help would be appreciated. I have a top end of about 42 now.
fno posted 05-03-2004 06:32 PM ET (US)     Profile for fno  Send Email to fno     
Nausetboy, what is the pitch of your existing prop? I have a 15 pitch 3 blade that might do the job.
jimh posted 05-03-2004 11:52 PM ET (US)     Profile for jimh  Send Email to jimh     
Yamaha makes steel propellers, but they paint them black. One of them might be a place to start, with the same pitch as your current propeller.
Ogden Dunes posted 05-04-2004 12:34 AM ET (US)     Profile for Ogden Dunes  Send Email to Ogden Dunes     

I run a Turning Point SS prop thirteen and one quarter or thirteen and three quarters (I can look it up if your interested) with a nineteen inch pitch on a Yamaha 100 4 stroke. I run this on a 1984 17 Super Sport.
My top end is 48 mph on GPS turning 6000 RPM. I have also pulled up four water skiers with some work using this prop. I am very pleased with it's performance.


NausetBoy posted 05-04-2004 07:27 AM ET (US)     Profile for NausetBoy  Send Email to NausetBoy     
I am not sure of the pitch of my existing prop, all I know is it is the stock prop, and I beleive it is the one made of steel and painted black. Ogden Dunes, If you could get the pitch and diameter off the one you have I would greatly appreciate it.
NausetBoy posted 05-05-2004 07:51 PM ET (US)     Profile for NausetBoy  Send Email to NausetBoy     
Ogden Dunes can you get me the numbers off your prop? Anyone else have any advice? Sal, the prop master, anything?
LHG posted 05-05-2004 08:43 PM ET (US)     Profile for LHG    
If you think you can turn up a 20" pitch (lowest available), a Mercury Laser II would be the absolute fastest. Engine will have to be lifted to 1-1/2". Drop-in hubs for Yamaha are available. Install medium size vent plugs.

Otherwise I would go with a 19" Mich Wheel Rapture. These props also use the Mercury designed interchangeable hub, a big plus for interchangeability and re-sale.

Consider this engine a 90, which is how Yamaha & Mercury now sell it.

Whaler puts this engine out on the 170 Montauk, a heavier boat, with an 18" Vengeance SS prop (conventional elephant ear design), so I would think the lighter and faster Nauset could definitely turn up the 19, and possibly a 20. The older 16' hull is faster than the 17'.

Ogden Dunes posted 05-06-2004 12:45 AM ET (US)     Profile for Ogden Dunes  Send Email to Ogden Dunes     

I will look at the prop tomarrow and send the information. I also use the aluminium hub. I felt that the alluminum would release at a lower stress level if I hit anything (possibly saving lower unit). There are also stainless steel hubs if you are worried about galvanic corrosion between hub and prop. One thing to due is use a good grease to grease the splines of the hub at the hub/ prop interface.


Ogden Dunes posted 05-11-2004 08:33 PM ET (US)     Profile for Ogden Dunes  Send Email to Ogden Dunes     

The prop dimentions are thirteen and one quarter by nineteen.


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