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HULL TUNING TIPS
As an initial starting point, try running the Rio 51 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. 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.
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 (flat
on the water). This reduces speed and may cause the boat
to stuff (crash by having the boat’s bow tuck under water).
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