6
Slip the driveshaft out the back of the boat. Wipe off any grease
and water that might be on the shaft.
Using GrimRacer Speed Grease, apply a small amount to the
shaft and slide it back into the boat. Be careful to align the
driveshaft to the hole in the end of the motor coupler.
Leave about a 1/16" [2mm] gap between the front of the
drive dog and the back of the brass tube. Retighten the shaft
coupler screws.
Performance Tuning
Keep in mind, as you tune your GP-1 Ultra Hydroplane for
top speed and handling that this boat IS SMALL AND FAST!
Because of its size it only needs very small adjustments to
change the way it performs.
STEERING DEFLECTION
Your GP-1 Ultra Hydroplane has VERY aggressive steering.
It’s important to keep this in mind as you tune your boat. The
rudder only needs a small amount of defl ection to turn well.
Setting the rate knob to high (Clockwise) can upset the handling.
Ultimately, it needs to be tuned to your race course or liking.
SHARPENING
It’s best to sharpen the turn fi n to a razor-sharp edge. This will
eliminate drag and reduce lift. Remember as a rule of thumb,
if it touches the water, it needs to be sharp or have sharp
edges. GRIMRACER SAYS! Sharpen the outer edge of the
turn fi n toward the inside of the boat. This is a great way to
help control prop torque.
STRUT
The strut can be
tweaked
to change the ride of the boat but
only experienced modelers should attempt this. If you are going
to
tweak
the strut remove the prop shaft and prop. Loosen the
