[alberg30] Re: Props

[stephen sousa]

From: "stephen sousa" <stephen=sousa%eng%emchop1 at fishbowl02.lss.emc.com>

Dick,

The motor in #114 was replaced with a Yanmar 2GM20F rated at 13h.p. I was 
running a 2 blade (sail) 13" diameter X 11" pitch which was fine under 
normal conditions. I have run a number of calculations evaluating a number 
of factors for a 3 blade replacement. The 3 blade which I will be 
installing this spring is a 13" diameter X 12 pitch which should provide 
more touque at lower r.p.m. I also replaced the shaft log, cutlass bearing, 
shaft, thru hull, and seacocks since the motor was removed and I had access 
to these areas. I removed the shaft when the motor was removed which was 
very easy. Another recommendation is to replace the stuffing box with the 
P.S.S dripless stuffing box, great product which doesn't require any 
adjustments after the initial installation. 

Any other questions pls ask.

Stephen Sousa
#114
Carina Vela
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Original Text
From: "Dick Filinich" <daf at mobiletel.com>, on 3/2/99 11:37 PM:
From: Dick Filinich <daf at mobiletel.com>

Anyone:Some time back I read some mail that was sent concerning three
bladed props.Now I don't recall who it was from and could use some input
form anyone who has converted to diesel and is turning a three bladed
wheel.Hauled out my boat today pulled the engine,scrubbed the hull and
bottom,and finished just before dark with fresh coat of anti foulant.Now
I can honestly say I've seen all of my boat.For a boat thats 33 years
old remarkable.Not a single blister,gouge in the hull,only small
cavities where the layers of anti foulant paint chipped off.Back to
engines let me know what you repowered with and size of prop you use.How
did it effect vessel under sail and power.Were you able to use same
shaft,or needed to cut old one or get new shaft.Please reply promptly
I've got a week to get this done,shipyard work slow,but wife working
Ha!Ha!.        Dick "High Spirits"#191 Galliano,La.

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