[C320-list] [c320] Drive shaft problem
Bill Culbertson
billculb_a2 at yahoo.com
Thu Jun 29 18:33:39 PDT 2006
Scott - thanks for the link.
I should have mentioned that I moved it back to the c320 class list already with my reply.
-bill
Scott Thompson <sthompson at toad.net> wrote:
I'm moving this thread over to the c320 class list ...
I've heard this theory but am skeptical that you need 6 inches of space
for adequate lubrication. Propeller manufacturer Martec says you need a
gap of only a small gap on either side of the bearing to get adequate
water flow. See
http://www.martec-props.com/anodes_struts.htm.
Bill Culbertson wrote:
> Al,
>
> The reason for no closer than 6 inches as I recall being told is that
> the cutless bearing needs water flow to keep cool and lubricated to
> prevent premature wear. A zinc closer than 6 inches interferes with
> water flow for the cutless bearing.
>
> -bill
> Harmony #859
>
> */alahlm at comcast.net/* wrote:
>
> Ralph
> I have been told not to put a zinc closer than 6 inches to the
> strut for what ever reason i don't no.
> Al Ahlman
> #476
>
>
> -------------- Original message --------------
> From: "Ralph Winkler"
> The easy way is to just mount a shaft zinc about a 1/2" to 1"
> from the strut. Solved two issues with one stroke. Life is grand.
>
> Ralph Winkler
> #394
> Milwaukee
>
> ----- Original Message -----
> *From:* Warren Updike
> *To:* c320
> *Sent:* Tuesday, June 27, 2006 9:17 AM
> *Subject:* Re: [c320] Drive shaft problem
>
> Just read some good advice. To prevent the shaft from
> slipping back to the rudder should the shaft come out of the
> coupling, coupling break, etc. place a SS hose clamp around
> the shaft in front of the packing.
>
> ----- Original Message -----
> *From:* Jeffrey Hare
> *To:* c320
> *Sent:* Tuesday, June 27, 2006 7:57 AM
> *Subject:* RE: [c320] Drive shaft problem
>
> Hi Irv,
>
> It shouldn’t be a big deal to replace while in the water.
>
> What likely happened is that the two set-screw Bolts
> that screw through the rear half of the coupling to lock
> the coupling to the prop shaft weren’t wired in place.
>
> In this picture, you can see the two Square Headed set
> screws I’m talking about on the aft half of the coupling
> flange. They’re wired to prevent them from loosening.
>
> http://www.catalina320.com/gallery/technical/P4130002?full=1
>
> None of this should be a big deal unless the shaft was
> bent somehow.
>
> -JeffH
>
> ------------------------------------------------------------------------
> *From:* Irv Grunes [mailto:igrunes at comcast.net]
> *Sent:* Monday, June 26, 2006 9:39 PM
> *To:* c320 at memphis.flexihostings.net
> *Subject:* [c320] Drive shaft problem
>
> Guys,
> Just got a call from one of our partners on the boat.
>
> Some how " the key to the drive shaft going into the
> coupling broke" and the end of the shaft is about three
> inches from the coupling.
>
> Does anyone know what might have happened?
>
> What is the shaft diameter, because someone in the
> boatyard suggested putting a pair of vise grips on the
> shaft to keep it from turning and falling back to hit
> the rudder in case we have to get towed to a boatyard.
>
> Does any one know the size of the key that goes into the
> coupling, is it metric or English in size/
>
> Has anyone ever reinstalled a drive shaft into a
> coupling while in the water and what to look for.
>
> We replaced a bent bronze shaft about three years ago
> with a Stainless Steel shaft at Markley's on Middle River
>
> Planning on going down to the boat tomorrow. Need a
> suggested list of tools to bring.
>
> I can always have the boat towed to Markleys, but would
> want to buy a zinc ( I think the shaft is 1 inch
> Diameter) to put on the shaft to keep it from getting
> too far back to the stuffing box because it will spin if
> we get the boat towed.
>
> Irv Grunes
> Isle of Wight #851
>
>
>
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