Pearson 10M Hoyt Jib Boom Splice Repair
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Installation Details
Comparison to Whisker Pole
After a few months sailing with the Forspar Hoyt Boom the rivets where the two parts of the extrusion are joined started working loose. I drilled out the rivets and pulled the splice apart. The boom was spliced with a thick sleeve section fastened by rivets. The two parts of the extrusion have different wall thickness and the sleeve was machined to fit both. The fit on the straight was good and tight but on the knuckle section it had worked loose. I repaired the splice with epoxy and new larger rivets.

After drilling out all the rivets and pulling the splice apart I drilled holes for new 1/4" rivets in two rows on the bottom of the extrusion tubes at about 90 degrees apart. This was so the rivets are not opposite each other where it seems they work against each other. With them all on one half the fit will be tighter when the gaps are all filled with epoxy. I prepped the surfaces for epoxy by sanding to 80 grit and cleaning with the West System aluminum etching solution. I used G/Flex epoxy thickened with 403 adhesive filler. I slathered the sleeve with epoxy and slid it into the knuckle section and set the rivets. I then did the same thing for the straight section. I think the repair is much stronger than the original splice but it cannot be disassembled.

These photos show repair of the splice.

Disassembled Splice

Internal Sleeve in Knuckle

Sleeve removed from
boom extrusions

Prep on inside
of Extrusion

Prep on inside
of Extrusion

Sleeve section rivited
and epoxied into knuckle

Sleeve section rivited
and epoxied into knuckle

Knuckle end
rivited and epoxied

Fully rivited
and epoxied

Fully rivited
and epoxied

Back on the Boat

Back on the Boat