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Sheave Masthead & Boom C-34, C-350, C-36, C-387, C-400, C-42, C-440

Part #: T1961
$26.00

 

In the Catalina 34 and Catalina 36 in mast furling masthead as well as the Catalina 42 mastheads, this sheave is supported by a tube that passes through the masthead. This sheave does not use a bushing when used on the Catalina 34, and Catalina 36.

 

In the Catalina 350, Catalina 387, Catalina 400, Catalina 42, and Catalina 440 mastheads there is a pin along with delrin bushings that support the sheaves. There are two sheaves forward and two sheaves aft.

These sheaves were used as boom end sheaves as well. Below is a Inventory of the usage:
• (4) per Catalina 34 boom for in mast furling rigs
• (6) per Catalina 34 masthead for in mast furling rigs
• (4) per Catalina 350 masthead for in mast furling rigs
• (4) per Catalina 350 masthead for non furling rigs
• (4) per Catalina 36 boom for in mast furling rigs
• (6) per Catalina 36 masthead for in mast furling rigs
• (4) per Catalina 387 masthead for in mast furling rigs
• (4) per Catalina 387 masthead for non furling rigs
• (4) per Catalina 400 masthead for in mast furling rigs
• (4) per Catalina 400 masthead for non furling rigs
• (4) per Catalina 42 masthead for in mast furling rigs
• (4) per Catalina 42 masthead for non furling rigs
• (4) per Catalina 440 masthead for in mast furling rigs

• Outside diameter: 85 mm (3 3/8")
• Inside diameter: 22 mm (~7/8")
• Width: 15 mm (~5/8")
• Line diameter: 13 mm (~1/2")

Caution: These are the dimensions of the sheaves used in the masthead of the standard mast on the early Catalina 42 with Isomat spars. Owners of Catalina 42's with a furling mast report using the same sheave but with a center bushing machined to 1/2" ID rather than 7/8" ID. The Catalina 400 also used a 1/2" diameter masthead clevis pin. If you need the sheave with 1/2" ID, please call us to special order.