I did an A-Cat mast repair what a job! It broke where there was difference in the wall thickness around the spreaders. The step-down in thickness was a sudden drop not a tapper making a hard spot in the mast. To fix it I had to make two sleeves one to even out the inside walls then a sleeve to fix the break.

http://www.themanshed.net/archived-projects/acat-mast/?g2_itemId=1750

Last edited by TheManShed; 03/11/12 05:03 PM.

Mike Shappell
www.themanshed.com
TMS-20 Builder
G-Cat 5.7 - Current Boat
NACRA 5.2 - early 70's