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BC Boy

Beveled block below winch?

5 posts in this topic

I have a Crown 28 cruiser. Removed the jib sheet winches- Barlow 20's- for maintenance and to replace the rotten wooden blocks which had been placed between the winch and the boat rail. Upon removal I've found that the port side block is beveled, creating a more-or-less level condition (the rail is slightly sloped outward), but the starboard block is not. I'm guessing that the bevel is to help prevent override of the sheet. This seems wise, but curious that the starboard block isn't similarly beveled. I don't recall any more overrides on that side but we generally don't push this boat too hard and aren't in too much of a hurry..

Anyone care to offer an opinion as to whether the bevel is necessary? I'm fabricating new blocks (this time out of nylon).

Thanks.

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I easily made mine with the required bevel by using 404 thickened epoxy with a little bit of white pigment and then pouring it in a teflon pie mold of appropriate circumference and sticking it on the sloped surface.  Then fill mold with epoxy and when cured you will have an nice beveled block that you can glue in place.  If the boat is on the dock and rolling then just measure the angle and shim the pie mold appropriately in terra firma.

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1 hour ago, BC Boy said:

I have a Crown 28 cruiser. Removed the jib sheet winches- Barlow 20's- for maintenance and to replace the rotten wooden blocks which had been placed between the winch and the boat rail. Upon removal I've found that the port side block is beveled, creating a more-or-less level condition (the rail is slightly sloped outward), but the starboard block is not. I'm guessing that the bevel is to help prevent override of the sheet. This seems wise, but curious that the starboard block isn't similarly beveled. I don't recall any more overrides on that side but we generally don't push this boat too hard and aren't in too much of a hurry..

Anyone care to offer an opinion as to whether the bevel is necessary? I'm fabricating new blocks (this time out of nylon).

Thanks.

The winch wraps clockwise from the bottom up. Think about the dynamics of an override and you'll have your answer. That said, you can't go wrong with both winches level and with a fair lead of the sheets.

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Thanks for the info. I'll try level pads under the theory that I can always bevel them, but that it's difficult to un-bevel them..

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Nylon will not have much life in the sun, very low UV resistance. It would be better to use something like Starboard (a UV stabilized UHMW PE), G10 fiberglass would be better still. 

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