[C320-list] Prop nut

[Allan S Field]

Jeff - Very weird.  We are one hull apart and mine came with 2 nuts (just
installed wrong).  I am fairly certain that the original prop on Sea Shadow
came from Michigan Propeller.  I went out to their website and looked at
their install guide.  The picture shows 2 nuts with the half-height going on
first.  But the description states, " Install the torque jam nut also, if
your shaft is so equipped."  Makes me wonder if we have different shafts?
At the end of the day, my advice is that if the boat comes with 2 nuts, the
half-height goes on first.  Should there be 2 nuts?  I can't answer that
one...

http://www.miwheel.com/uploads/resources/Inboard_Installation_Process.pdf

Allan
-----Original Message-----
From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On Behalf
Of Jeff Hare
Sent: Wednesday, April 22, 2015 6:56 PM
To: C320-List at Catalina320.com
Subject: Re: [C320-list] Prop nut

Allan, 

Our boat only had a single large castle nut installed with cotter pin.
Catalina direct also confirms this was standard...
http://www.catalinadirect.com/index.cfm/product/1625_844/prop-shaft-castle-n
ut-34.cfm

-Jeff

-----Original Message-----
From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On Behalf
Of Allan S Field
Sent: Wednesday, April 22, 2015 6:46 PM
To: C320-List at Catalina320.com
Subject: Re: [C320-list] Prop nut

There should be two - one is half-height, the other full-height.  And while
this sounds counter-intuitive, the half-height nut goes on first against the
hub.  The half-height nut initially takes the load but when the full-height
nut is installed, the load is transferred to that one.  See:
http://www.passagemaker.com/channels/propeller-nut-myth-busting/

Most very boat I have seen, including my own, had the full-height nut
installed first.


-----Original Message-----
From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On Behalf
Of tharrison at innovations-plus.com
Sent: Wednesday, April 22, 2015 6:34 PM
To: C320-List at Catalina320.com
Subject: Re: [C320-list] Prop nut

I do not see two nuts. Just one 

Sent from my iPhone

> On Apr 22, 2015, at 6:14 PM, "Allan S Field" <allan.field at verizon.net>
wrote:
> 
> First off, there are 2 nuts plus the cotter pin (or at least, should be).
> Secondly, you may have to heat the nuts with a MAPP torch (propane 
> torch probably won't get hot enough) enough to break them free.
> Third, WD40 will be of no use.  Try PB Blaster and let it soak overnight.
> 
> -----Original Message-----
> From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On 
> Behalf Of tharrison at innovations-plus.com
> Sent: Wednesday, April 22, 2015 5:24 PM
> To: C320-List at Catalina320.com
> Subject: [C320-list] Prop nut
> 
> I just tried to take the prop nut off. Notice I said tried. I just 
> came back from tool store with a 1 1/8 deep socket and a 16 inch bar,
> 1/2 drive.  This will be my second attempt!
> 
> I have put WD40 on the nut. 
> 
> I did remove the cotter pin. 
> 
> I have blocked the prop with 6x6and a couple of 2x6's up against the 
> boat bottom.
> 
> Before I get all manly (which I am not) and use force on the nut I 
> thought I would ask; " What am I or did I miss in trying to get this 
> nut
off"?
> 
> Ted
> Hull 424
> Whitby Ontario
> 
> Sent from my iPhone
>