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TOPIC: Need spare props, 4788/490, PNW

Need spare props, 4788/490, PNW 08 Oct 2017 17:32 #1

  • Cptmorgan
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I'd like to have a spare set of props onboard before we head out next spring. Anyone have a reasonable source for spare props in the Pacific North West? Anyone have spare set in the garage or lazarette that you're looking to unload?

Edit: 4-blade Nibral Nakamichi 24x24 2” shaft are OEM on the 4788s and 490s. Ideally, I'd like something already pitched to around 22"-23”, but I expect I'll need to balance and re-pitch used props at the local shop.

Thanks,
-Morgan

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1997 Bayliner 4788 "Mostly Harmless"
Sold: 1990 Bayliner 3888
Last Edit: by Cptmorgan.

Need spare props, 4788/490, PNW 09 Oct 2017 20:56 #2

  • ksanders
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“The prop shop” can supply you with a set of the original nakashima props, cast in any pitch you want.

If your boat is not quite pitched properly this is a great opportunity to make it just right.

The cost two years ago was about $3700 for the set.

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KEVIN SANDERS
4788 LISAS WAY
SEWARD, ALASKA
www.mvlisasway.com
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Need spare props, 4788/490, PNW 09 Oct 2017 22:52 #3

  • guntar
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What shafts do you have? I have a set of 1/34. See my add in classifieds..

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Guntar
1999 3988
Cummins 270s

Need spare props, 4788/490, PNW 09 Oct 2017 23:23 #4

  • boatworkfl
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Specify the shaft size and the pitch, and the number of blades.
Makes it much easier to assist.
You might be surprised what you can find on ebay.
I bought a pair of 4 blade nibral's, new for $350. for my 3870.
I also bought a pair of 3 blade nibrai'sl very good used for $250 used.

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Pat says: DO-IT-RIGHT THE FIRST TIME!

Bayliner 3870 "ALASKA33)
Twin 350 GM power
Located in Seward, AK
Retired marine surveyor
Last Edit: by boatworkfl.

Need spare props, 4788/490, PNW 09 Oct 2017 23:36 #5

  • smitty477
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Morgan's ultimate required best pitch is going to be determined by his exact engines, his current baseline, and the specs on the exact props he ends up with.
In general I believe most 47's will be nest served with a 24" Diameter and 20.5-22" pitch 4 blade nibrals with a 2" shaft.

Knowing his current baseline props and numbers will allow a good prop shop to determine the best fit.
Baseline numbers for the prop shop include: boat length and beam, weight of boat, transmission ratios, exact engine rated rpm and hp, current accurate rpm speeds at a few data points (100 rpm apart) approaching WOT and a WOT rpm number for both engines.

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Northport NY

Need spare props, 4788/490, PNW 10 Oct 2017 14:04 #6

  • mmichellich
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For spare I got bronze props instead of the more expensive Nibral for our 47 20 years ago.

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Started boating 1965
Bayliners owned: 26 Victoria, 28 Bounty, 32, 38, and 47 since 1996
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