AquaCraft Rio 51Z - Manual (Page 14)

14
HULL TUNING TIPS
To change the thrust angle use a 4mm Allen wrench to
loosen the two large screws on the side of strut mounting
brackets. Once loose you can rotate the strut up or down
depending on the type of handling you are looking to achieve.
As an initial starting point, try running the Rio 51Z with
a neutral propeller thrust angle. This can be checked
by placing a straightedge along the bottom of the
hull and checking its relation to the prop shaft.
Neutral Propeller Thrust: This setting provides
thrust without letting it affect the ride attitude of the
hull (the bow’s tendency to ride up or down).
Positive Propeller Thrust: This setting causes the bow to
run high. This makes the boat run faster but looser at the
same time. In rough water this can cause the boat to blow
off (crash by having the bow of the boat lift off the water).
Negative Propeller Thrust: Causes the bow to run low (fl at
on the water). This reduces speed and may cause the boat
to stuff (crash by having the boat’s bow tuck under water).