Officers

Internal Boom Main Outhaul 8 to 1 Purchase
by Gene Ferguson
(Article Appeared in Republished form in July 1997 TellTales Publication with the permission of Gene Ferguson)

All Parts are located in the 1997 West Marine Master Catalog

A. 1/4" rod to fit across the goose neck inside the boom.

B. Harken double block with becket, Model#114314-$18.99-Page 264.

C. Harken double block, Model#114306-$17.99-Page 264.

D. Harken thru deck block, Model#114348-$9.39-Page 264.

E. Clamcleat (Junior Aluminum w/fairlead), Model#115725-$7.00-Page 279.

F. Ronstan wire block, Model#546382-$10.49-Page 263.

G. Ronstan wire exit block, Model#148833-$9.49-Page 263.

H. Halyard shackle, Model#110728-$8.99-Page 259.

J. 1/4" sta-set yacht braid, Model#121988-$0.32/ft.-Page 244.

K. 3/32" flexible stainless wire, Model#119214-$0.80/ft.-Page 248.

L. 3/32" flexible stainless wire, (same as K).

Hand swaging tool, Model#129817-$20.85-Page 248.

4-3/32" copper oval sleeves (nicopress), Model#115063-$0.43/ea.-Page 249.

4-3/32" thimbles, Model#265066-$0.50/ea.-Page 249.

Drill a 1/4" hole all the way thru the goose neck fitting to accept A. The boom will prevent the rod from sliding out.

Attach B and one end of K to A.

Cut a hole in boom about 3' from front and attach D with 3/16" stainless steel pop rivets.

Attach E about 2' from front of boom with 3/16" stainless steel pop rivets.

Attach one end of J to becket on B and feed thru C & B, out D and thru E.

Put F on K and attach to C with nicopress.

Cut hole in back end of boom and insert G and attach with 3/16" stainless steel pop rivets.

Attach L to F with nicopress, feed thru G and attach H with nicopress.

Be sure to use thimble inside each of the end fittings of the flexible wire.

This set up will give an 8 to 1 purchase on the main outhaul and can be adjusted from the companion way or the mast.