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ボート用品 Dutchman BB250BのPDF オーナーズマニュアルをオンラインで閲覧またはダウンロードできます。Dutchman BB250B 12 ページ。 Boom brake

If the line can not pass through the toggle, install an eye splice with a thimble in the end of the line. Follow the directions

below to complete the installation.

To attach hardware like a block or a shackle directly to the chainplates, use

lacing line, which is more reliable than a poorly aligned shackle. Adjust the

number of wraps to meet the safe working loads given in the specifications. A

good 1/8" / 3 mm polyester line will have a breaking strength of about 300

lbs. The safe working load is 20% of the breaking strength or 60 lbs, so 20

complete wraps of line around the chainplate and through the block or shackle

would give a safe working load of 1,200 lbs. Most of the wraps must go

completely around the turnbuckle toggle, but add a few more wraps through

the toggle, to keep the line from riding up the toggle.

Finish up by wrapping the line around itself, to provide a cover for UV protec-

tion. By wrapping the line up to and around the shackle, after the line has

been tensioned, you can help hold the block or shackle in the correct orienta-

tion.

Genoa Tracks: Genoa tracks often provide a convenient point, if they are

set inboard and extend to within 12" / cm of the aft lower chainplate. Many

hardware manufacturers make pad eye's that slide on a track for the fixed end

of the brake line, including Schaefer, Lewmar and Harken. A genoa track

block can be used on the other side to turn the line back to the cockpit.

Cabinhouse Pad Eye's: As mentioned, this is a good spot for boats with

narrow decks, high cabinhouses, and outboard chainplates, as on many Is-

land Packets, Pacific Seacrafts, and other more traditional boats. Contact the

builder to ascertain if the cabinhouse is strong enough to take the brake loads.

Normally the pad eye's must be installed on the Cabinhouse top, as far out-

boards as possible. Pad Eye's must be installed with backing plates. Use a

spring mounted stand up block on the side where the line will run back to the

cockpit.

Deck Mounted Pad Eye's: An inboard deck location may be the best

option for some boat where there are no genoa tracks. This makes for a good,

permanent installation. Contact the builder to ascertain if the deck is strong

enough to take the brake loads. Pad Eye's must be installed with backing

plates. Use a spring mounted stand up block on the side where the line will

run back to the cockpit.

Toerail Mounting The toerail is sometimes the only possible location, especially on boats with long booms. Bear in mind

that you will have to step over the line when going forward. Fortunately, the brake eliminates one of the reasons to go

forward. Again, be very careful what you attach the brake line to. Stanchion bases and midship cleats often are not

strong enough.

Seizing block to toggle

Line run to cabinhouse

Toerail mounted brake

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