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Re: Main Halyard Sheaves [Re: Georges] #9051
03/05/10 10:38 PM
03/05/10 10:38 PM
Joined: Jul 2004
Posts: 868
New Orleans, LA, USA
David Erwin Offline
J30.us
David Erwin  Offline
J30.us
Joined: Jul 2004
Posts: 868
New Orleans, LA, USA
Has anyone installed a main halyard sheave using the ball bearing option? If so what part number did you use?

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Re: Main Halyard Sheaves [Re: Cap'n Vic] #9150
03/22/10 10:05 PM
03/22/10 10:05 PM
Joined: May 2007
Posts: 2,669
Portsmouth, RI
Rhapsody #348 Offline
Past J/30 Class President
Rhapsody #348  Offline
Past J/30 Class President
Joined: May 2007
Posts: 2,669
Portsmouth, RI
I was just looking at the RigRite website and see that the J/30 sheaves on this page are the same as the J/24 sheaves on this page.

That means that the "standard" Sparcraft Delrin sheaves also offered on the J/24 page at Annapolis Performance Products should work on the J/30 main halyard.

Re: Main Halyard Sheaves [Re: bananas] #19341
04/10/24 02:17 AM
04/10/24 02:17 AM
Joined: Apr 2024
Posts: 4
new york, usa
J
jannickz Offline
Forum Newbie
jannickz  Offline
Forum Newbie
J
Joined: Apr 2024
Posts: 4
new york, usa
The most accurate way is to take precise measurements of the old sheaves before removing them from the mast. This includes the sheave diameter, groove diameter (if applicable for wire rope), sheave width, and pin diameter. If you know the manufacturer of your boat, reach out to their customer service department. They might have spare parts catalogs or technical drawings that include the halyard sheave specifications. Stainless steel with ball bearings sounds like a great choice for durability and low friction. Make sure the chosen stainless steel grade is appropriate for marine use to withstand corrosion.

Re: Main Halyard Sheaves [Re: bananas] #19343
04/12/24 09:33 PM
04/12/24 09:33 PM
Joined: Sep 2021
Posts: 26
Portsmouth, NH
N
Navy Dan Offline
Senior Member
Navy Dan  Offline
Senior Member
N
Joined: Sep 2021
Posts: 26
Portsmouth, NH
I replaced my main halyard sheaves to accommodate 3/8 line and got rid of the wire to rope splice a few seasons ago. So far so good. Dan #409

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