1990 Canadian Sailcraft CS34 Shoal Draft
Sail #8268

1982 Catalina 22 Fin Keel
Sail #10506

1994 MUMM 36 ACE
Sail # 29206

Wednesday, April 27, 2022

MUMM36 ZAMBONI Mast Repair

Klacko spars fixed the mast very quickly.

There was a problem with the construction of the mast.
The mast is 55ft long, and has a weld just below the partners (about 6ft from the base).
The bottom 8ft of the mast is sleeved with a smaller aluminum extrusion.

The welding at this joint had failed.

Klacko separated the weld, re-sleeved with a thicker extrusion, re-welded the joint, and added some 1/4" plates at the front and rear of the mast so it won't happen again.

Brother in law Hans met Phil and Tim mid morning:



We unloaded the mast to some saw horses in preparation for putting the mast up next week.

These photos show the re-inforcement plates welded to the mast:



Since the mast is larger front to back with these plates, Klacko also had to modify the mast partner casting:


We will have to enlarge the mast hole at the partners to accommodate this.

Klacko also modified the mast step to accept a mast jack back (see above), as well as added some mainsail feeders:


We have had trouble raising the main from day one.  The bolt rope keeps on popping out of the track.  These feeders should help enormously!







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