#13070100 / Page 1 of 1
#13070100 - COMPTIPTM RETROFIT INSTRUCTIONS
HOBIE 14, 16, 18 AND HR14
1) REMOVE MAST TANG OR TANGS (HR14) BY DRILLING OFF RIVET
HEADS W/ A 13/64” (4 MM) DRILL BIT AND PUNCHING RIVET CASINGS
AND CAPS THROUGH.
2) MEASURE FROM THE BOTTOM OF THE
MAST EXTRUSION (NOT INCLUDING MAST
BASE). NOTE: CUT SHOULD BE ABOVE
TANG RIVET HOLES!
MARK AND CUT OFF MAST SQUARE AT THE
APPROPRIATE LENGTH. (HINT: WRAP A
SHEET OF PAPER AROUND THE MAST AND LINE UP EDGES TO MAKE
A PERFECTLY SQUARE MARK ALL AROUND THE MAST. TAPE IN
PLACE AT THE CUT POINT. PENCIL A THICK LINE ALL AROUND THE
MAST FOLLOWING THE PAPERS EDGE. WITH A HACK SAW, START
CUTTING ON THE LINE AND ROLL THE MAST OVER AS YOU CUT. CUT
A “TRENCH” ALLAROUND THE MAST BEFORE CUTTING THROUGH
WHILE ROLLING THE MAST SLOWLY OVER. (STARTING A CUT AND
CONTINUING STRAIGHT THROUGH MAY NOT CUT STRAIGHT.)
3) DRILL A 3/8" DIA. HOLE, 9" DOWN FROM CUT (ON THE FRONT) AS SHOWN (FIG. 1).
4) INSERT ETHAFOAM PLUG TO A DEPTH OF 12" (FIG. 2). THIS PLUG MAY BE GLUED IN PLACE
WITH PLENTY OF 3M 5200 OR SIKAFLEX IF DESIRED. OTHERWISE USE FOAM INJECTION AS
DESCRIBED BELOW. IF GLUED IN PLACE, THE PLUG MUST CURE FOR 24 HOURS BEFORE
CONTINUING INSTALLATION.
5) FILE COMPTIPTM FOR A SNUG FIT INSIDE EXTRUSION. CHECK THAT TIP WILL FULLY INSERT.
6) PLACE LOWER MAST ON SAW HORSES OR LARGE TABLE WITH MAST BASE AGAINST SOLID
PADDED OBJECT (THAT YOU CAN BE BANG MAST BASE AGAINST). GLUED ASSEMBLY WILL HAVE
TO BE HELD LEVELAND SQUARE WHILE CURING, PREPARE ADDITIONAL SAW HORSE IF
NECESSARY.
7) MASK OFF EXTRUSION AND LUFF TRACK OPENINGS AS WELL AS COMPTIPTM. SPREAD EPOXY
OR POLYESTER PUTTY INSIDE OF EXTRUSION AT CUT END TO A DEPTH OF 6". SPREAD
MATERIAL OUTSIDE ON COMPTIPTM JOINT.
8) INSERT COMPTIPTM. HOLD TIP WHILE INSERTING. PUSH INTO EXTRUSION WITH MAST BASE AGAINST SOLID OBJECT. AS TIP
GETS TIGHTER, PULL ENTIRE ASSEMBLY BACK AWAY FROM THE SOLID OBJECT, THEN SHOVE BACK AGAINST IT (IN A BATTERING
RAM MOTION). REPEAT UNTIL TIP IS FULLY INSERTED. BRACE ASSEMBLY IN A POSITION TO HOLD MAST AND TIP SQUARE ON ALL
AXIS AS EPOXY CURES.
9) H-16 NOTE: IF TANG IS AN OLD STYLE OR IS DAMAGED REPLACE IT. CURRENT TANG HAS 3 HOLES FOR STAYS AND TRAPEZE
WIRE ATTACHMENT. USING EXISTING HOLES IN EXTRUSION, DRILL COMPTIPTM FOR TANG RIVET AND SLEEVES WITH A 13/64” (4
MM) DRILL BIT AND REINSTALL MAST TANG WITH RIVETS AND RIVET CAPS.
INTERNAL SEALING PLUG:
10) TAPE OFF AREA AROUND 3/8" HOLE TO REDUCE CLEANUP AFTER FOAM INSTALLATION.
11) TILT MAST FOR FOAMING, HEAD DOWN, AS SHOWN. (FIG. 3)
12) (READ FOAM INSTRUCTIONS PRIOR TO USE) INJECT A/B
URETHANE FOAM INTO 3/8" HOLE" (APPROX. 3 SECOND SQUIRT)
PLUG HOLE WHILE FOAM EXPANDS. FOR BEST RESULTS, FOAM AND
MAST SHOULD BE ABOVE: 70° F.
13) AFTER FOAM HAS CURED FOR AN HOUR OR MORE, CLEANUP UP
EXCESS WITH A SINGLE EDGE RAZOR BLADE AND INSTALL 3/8"
PLUG INTO 3/8" HOLE.
CUT LENGTHS ARE:
H14 I5' 1 1/8"
H16 18’ 3 3/4"
H18 20’ 5 3/8"
HR14 14' 4 3/8"
