Pro Boat PRB08011 - Manual (Page 12)

Blackjack 29
Prop Angle Adjustment
Raising the prop strut increases speed, but also
decreases steering response and increases cavitation.
Lowering the drive strut increases steering response, but
also increases steering sensitivity and decreases speed.
1. Loosen 2 bolts and 2 nuts from the drive strut on the
rear of the boat.
2. Slide the strut up or down to change the angle of the
propeller in relation to the hull.
3. Adjust as desired and tighten the nuts and bolts.
Drivetrain Lubrication
Always replace the drivetrain parts when they are
damaged or show visible wear or injury and damage may
result.
Lubricating the flex shaft is vital to the life of the
drivetrain. The lubricant also acts as a water seal, keeping
water from entering the hull through the stuffing tube.
Lubricate the flex shaft and all moving parts after every
30 minutes of operation. Lubricate the drive strut after
every 90 minutes of operation.
1. In the hull, use 2 10mm open-end wrenches to loosen
the collet nut from the flex shaft.
2. Slide the flex shaft out from the stuffing tube and
drive strut at the rear of the boat.
Tip: Use paper or cloth to touch the flex shaft and other
lubricated parts.
3. Wipe the old lubricant and material from the flex
shaft.
4. Lubricate the full length of the flex shaft assembly
up to the drive dog using marine grease (PRB0101 or
PRB0100). Also apply grease to the collet threads.
5. Carefully reinstall the flex shaft in the drive strut,
stuffing tube and collet. If the flex shaft is difficult to
remove or install in the collet, use a flat screwdriver to
spread the grips of the collet.
Ensure there is a 1–2mm gap between the drive strut and
drive dog to allow for flex shaft shrinkage under load.
NOTICE: Running the boat in saltwater could cause some
parts to corrode. If you run the boat in saltwater, rinse it
thoroughly in freshwater after each use and lubricate the
drive system.
NOTICE: Because of its corrosive effects, running RC
boats in saltwater is at the discretion of the modeler.
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