Note: To avoid undue stress on the boom fitting, it's recommended
that booms be fixed in the upright position. If the boom can roll about
its' central axis, please contact the factory before installation.
Installation Tools: Phillips Screwdriver; Fine Tooth Hacksaw; Center
Punch; Rule; Variable Speed Reversible Drill and Blue Locktite.
1. Setup Boom Height: Use the main halyard to support the
boom above its highest operating position, or a desired height when moored
or docked. At this time, check that the Model K1000 is correct. The min.
length is 40" (102cm) pin to pin and the max. weight it can support
is approximately 34 lbs. (15kg) measured at the outboard end of the boom
with the main sail flaked as stored.
2. Position Boomkicker:
The Boomkicker works by flexing upward and when straight, it is at the top
of its travel. Install the Boomkicker with the screw head side of rod clamps
facing up to flex upward away from the vang. With the boom height set, position
the Boomkicker with fittings alongside the vang triangle to see how it fits.
Position is not critical so long as it does not interfere with the vang.
It's recommended that both the vang and the Boomkicker make an angle of
between 30o and 45o with the boom. Mark the location for the mast fitting.
3. Install Mast Fitting: The mast fitting
comes with a luff grove slide to avoid drilling the mast. Different diameters
and flat slides are available by exchange, or at the web site or by phone.
See part list. If usable, after disassembly from the fitting, the slide
can often be inserted at the mast opening for the sail and dropped or lowered
with a string. If the mast is out of the boat, the slide may be inserted
from the base of the mast. Reassemble the mast fitting at the desired location
and tighten the screws. If the slide is unusable, the bracket may be screwed
directly to the mast. Extra long screws are included if needed to pass through
the groove. Use the #7 drill and the 1/4-20 tap provided, with the mast
fitting bracket as a guide. A variable speed, reversible drill makes tapping
easy. Go slow. Locktite is recommended on threads.
Shorten if Necessary: If the Boomkicker is too long, we recommend
shortening the rods at the mast end so any cut ends are less visible. Loosen
the rod clamp with the provided hex-key and slide the extension up the rods
until there is a good fit. The bottom half of the clamp fittings for each
extension have embossed stops to prevent slipping. Do not shorten total
length more than 5" (12.5cm). Cut off extra rod length equally from
both rods with a fine tooth hacksaw. Before tightening the clamps, check
the rod ends are against the embossed stops and the clamps/extensions are
not twisted relative to each other.
5. Install Boom
Fitting: Make sure the rod clamps at both ends are tight. Then
attach the Boomkicker to the mast fitting, and the slide and track at the
boom end. The angle on the track goes forward, the stop in aft. There are
3 standard choices for the stop with the initial position in the middle
for later adjustment if needed. If necessary more stop positions can be
drilled using the inscribed line along the side of the track for the 3/16"
diameter pin. With the Boomkicker in position and slid back against the
stop pin, and with the track centered under the boom, mark one hole. Then
center punch, drill and tap. Attach the track, recheck position, then drill
and tap the remaining holes using the track as a guide. Use Locktite on
threads. Hint: Once installed, to attach the Boomkicker, it's usually easier
to slide the Boomkicker into the boom track first, then attach it to the
mast fitting, rather then attaching to the mast first.
6. Check Return Force: After installation,
check return force by pushing down on the end of the boom. The amount of
support desired is a personal preference. For reference, with the sail flaked,
using about 10 to 12 lbs.(4.5 to 5.4 kgs) to pull the aft end of the boom
down seems like a good balance between boom support versus tension required
to pull on the vang. More support may be desired with a bimini or if crew
use the boom for support with the sail down. Less support may be desired
if the mainsail is not stored on the boom or the Boomkicker is used to just
lift the boom in light air for sail shape. If less or more force is needed,
optional spring rods are available either as exchange, or ordered on the
web or by phone. The purpose of the Boomkicker is to support the boom so
the boom topping lift can be eliminated along with the chafe, windage, hangups
and adjustments. If needed in unique circumstances, such as motoring in
waves with the mainsail down, the main halyard can be attached to the aft
end of the boom and tightened for further support.
The following is made in lieu of all warranties, expressed or implied. Seller's
and manufacturer only obligation shall be to replace or repair such parts
of the product proved to be defective for a period of five years. User shall
determine the suitability of the product for its intended use and user assumes
all risk and liability whatsoever in connection therewith.
For additional information or support, contact Mauri
Pro Sailing Technical Team, your Boomkicker specialist.