Moderated Discussion Areas
ContinuousWave: Whaler Performance
|Author||Topic: S.S. Prop|
posted 05-03-2004 05:02 PM ET (US)
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.
posted 05-03-2004 06:32 PM ET (US)
Nausetboy, what is the pitch of your existing prop? I have a 15 pitch 3 blade that might do the job.
posted 05-03-2004 11:52 PM ET (US)
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.
posted 05-04-2004 12:34 AM ET (US)
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.
posted 05-04-2004 07:27 AM ET (US)
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.
posted 05-05-2004 07:51 PM ET (US)
Ogden Dunes can you get me the numbers off your prop? Anyone else have any advice? Sal, the prop master, anything?
posted 05-05-2004 08:43 PM ET (US)
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'.
posted 05-06-2004 12:45 AM ET (US)
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.
posted 05-11-2004 08:33 PM ET (US)
The prop dimentions are thirteen and one quarter by nineteen.
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