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Cracker Box tuning tools
Stinger Angle
- Negative to push the bow down, positive to push the stern down.
This is a course ride angle adjustment. Small changes in the strut angle make large
changes in ride attitude.
Trim Tabs:
Inner- Use these for fine adjustment of the ride attitude, as well as to control
torque and chine walk.
Outer- use these for fine adjustments to turns.
Rudder: Trim-
Use this to make the boat go straight. The rudder should be parallel to
the hull centerline. Anything less will rob speed. If you have to trim left, it’s probably
prop walk.
Rudder: angle-
Use this to control the nose in turns. Kicking the bottom of the rudder
forward will cause the nose to rise in the turns. Kicking the bottom back will
cause the nose to drop in the turns. It only takes a little; 5 degrees either way would be
too much for most hulls.
Turn fin:
This is mounted to the right side of the transom, and 90 degrees to the
bottom of the hull. Make sure that there is never any fin area forward of the pivot bolt
(kick it back slightly).
CG:
This is the longitudinal (fore and aft) balance of the hull. Monos are usually
33-36 percent of the hull length, from the transom. This is the pivot point for turning. A
forward CG keeps the hull wetter, preventing blowovers. Limits absolute top speed due
to drag.
An aft CG keeps the hull out of the water, and usually blows over with very
high speed. That’s why they call it a “balance” point…
Prop:
The prop is very important to speed, as well as overall handling of the boat.
You can (and should) experiment with many props, lifting and non lifting, to
get the best speed and handling from your boat. Always sharpen and balance your
props! A sharp prop helps reduce “prop walk”, and a balanced one usually stays
together!
Summary of Contents for VBox 2013 Edition Deep Vee Sport Crackerbox
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