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ContinuousWave: Whaler Performance
Aluminum to stainless prop
|Author||Topic: Aluminum to stainless prop|
posted 04-09-2003 07:33 AM ET (US)
I need to replace my prop this year and plan to finally try a stainless. I currently have a 14x19 aluminum on a 17 Dauntless with 115 Johnson. The 14x19 seems to be about ideal with a decent holeshot and it is right in max rpm at wide open throttle.5300 -5400 rpm.
My question: I have been looking at stainless listings and mostly see 13 1/4 x 19 not 14x19. What can I expect by going to stainless and this reduction to 13 1/4 from 14? I may try a Rapture from Cabelas they seem like a good value. I plan to get a McGuard prop lock too. Had a aluminum stolen last year and would be very upset to lose a ss. Any feedback on prop locks? Any feedback on Rapture ss or thoughts on a better ss prop?
posted 04-09-2003 09:21 AM ET (US)
Get the lock...can't hurt. The 13x19 is what you want, will keep you about the same RPM. A 14x19(which is not available) would probably drop you to 5200 rpms.
posted 04-09-2003 11:19 AM ET (US)
If you are interested, I have a 13.25 x17 Stiletto prop that I bought for my 2002 Yamaha 80 hp four-stroke. It is actually designated as a Mercury prop (M1317), but fits my Yamaha, too. It is in excellent condition (maybe 10 hours use), but is a bit too tall for my set-up. My OEM Yamaha aluminum prop's pitch is 17" and it lets the engine run to 6,000 WOT. The Stiletto runs great and gives better trim range without cavitation, but maxes out at 5,600 because it has a good deal more cupping than the Yamaha prop. I expect that my 17" Stiletto would run at the same rpms WOT as your 19" Johnson prop. I am otherwise pleased with the Stiletto and plan to get hold of a 15". It has been my experience (both with a Powertech prop and the Stiletto) that SS props will turn somewhat lower rpms than the same sized aluminum prop.
I will sell the prop for $135 + 15 shipping. If you are not satisfied, I will return your $135 within 30 days of purchase (you would have to pay to ship it back to me). If interested, e-mail me at email@example.com.
posted 04-09-2003 03:59 PM ET (US)
I don't think a Mercury hubbed prop will fit OMC.
Go with a Rapture or Stilleto performance prop. You will pick up bow lift and about 2 MPH.
posted 04-09-2003 04:07 PM ET (US)
Larry, you're right - I had brainlock.
posted 04-09-2003 07:47 PM ET (US)
I've got a good friend that has a pair of stainless props, and he sprayed them black, making them look like a set up aluminum, to reduce the theft potential.
Second point, is that if your running where there are reefs or rocks, be very, very carefull. An aluminum prop will break, usually before internal lower unit damage. Stainless, being stronger, _will_ allow damage to occur.
posted 04-09-2003 10:47 PM ET (US)
I bought a Rapture stainless prop from Midwest Propeller last year--online--really good pricing, then sent my dinged up Aluminum prop in to them to be repaired. Happy on both counts. Recommended highly. Check them out before Cabela's. You'll be impressed.
posted 04-10-2003 07:46 AM ET (US)
I think I'll go with 13 1/4 x 19 Rapture ss.
posted 04-10-2003 11:19 AM ET (US)
I did the same thing in painting my prop black. I've had several friends walk up and and "grease" me about having a cheap aluminum wheel. Of course, all it takes is one of them to rap on the prop with their knuckle. But, I truly believe it deters the walk-by's that may be shopping.
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