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  #11  
Old 05-18-2010
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Was this the one you got from McMaster?
Yes, per MaineSail's suggestion.
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Old 05-18-2010
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I have a zinc right before my prop strut... seems to be the same concept.
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Old 05-18-2010
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Originally Posted by funjohnson View Post
I have a zinc right before my prop strut... seems to be the same concept.
I hope that is not what you meant. A zinc in front of the strut will interfere with water flow and cooling in your cutlass bearing. Not a good thing.

This discussing is about preventing the PSS collar from sliding forward due to the pressure from the bellows and hence causing a leak.

Gene
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Old 05-18-2010
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Was looking for set screws and saw this on their website. Looks like they're live parts now.

PYI Inc. Max-Prop PSS Shaft Seal Seaview Radar Mounts R&D
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Old 05-18-2010
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Quote:
Originally Posted by Gene T View Post
I hope that is not what you meant. A zinc in front of the strut will interfere with water flow and cooling in your cutlass bearing. Not a good thing.

This discussing is about preventing the PSS collar from sliding forward due to the pressure from the bellows and hence causing a leak.

Gene
How far infront? The zinc is about 12" in front of the strut... midway between the exit of the stuffing box and strut. This will alow the shaft to come about 12" out, but still within reach from inside the boat.
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Old 05-18-2010
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We put a zinc in the same place just forward and up against the PSS on the shaft.
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Quote:
Originally Posted by funjohnson View Post
How far infront? The zinc is about 12" in front of the strut... midway between the exit of the stuffing box and strut. This will alow the shaft to come about 12" out, but still within reach from inside the boat.
No problem then. An inch would be enough. If you are using it to keep the shaft from coming out then I would keep it close enough to prevent the prop from hitting the rudder if it actually did come out.

Gene
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