I did my 35-2 with spartite and had no issues with mast removal. It was probably 15 years ago, but I believe that after making sure there was vaseline all over the tangs, I put the plasticine stuff between the tangs and the mast collar both inside and above the collar.
The tangs stay with the collar when the mast is removed.  It’s really important to vaseline the entire inside of the collar

David Kelly
Formerly Baraka C&C 35-2

On 20 Jul 2025, at 18:53, Don Kern via CnC-List <cnc-list@cnc-list.com> wrote:


I have been considering replacing my hard wood shims with the Spartite plug, since I pull my mast every year for transport the boat to my house.  It is a pain to waterproof the mast/partner ring due to the hard vang being mounted 1/4 inch above the ring; so using continuous wide shrink tape around the mast partner mast is not possible.

The boat is a1974 C&C 35-2 that has six turning blocks for halyards/topping lift mounted on the partner ring or to cabin top adjacent to the mast.  Thus, it has two straps (P&S) mounted/hooked on the ring, going down the mast, to be thru bolted to the mast, to keep the cabin top from being lifted.  Has anyone successfully used and sealed a Spartite plug to this arrangement?

Don Kern,
Fireball, C&C 35-2
Bristol, RI


From: CHARLES SCHEAFFER via CnC-List <cnc-list@cnc-list.com>
Sent: Wednesday, July 16, 2025 7:47 PM
To: CNC boat owners, cnc-list <cnc-list@cnc-list.com>
Cc: CHARLES SCHEAFFER <cscheaf...@comcast.net>
Subject: Stus-List Mast partner mast shims

 

Is Spartite the best way to shim a mast in the deck ring?  Are there other ways to shim a mast for a DIYer?

 

Chuck S


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