Ball Speed
Topspin and Backspin
A high level of either topspin or backspin will slow the ball speed. To
increase ball speed reduce the amount of spin on the ball. A default speed
setting of 20 will be set for spin levels higher than 7.
Alternating Fast and Slow Shots
The serving wheels can speed up faster than they can slow down. If you
want to set quick shots followed by slow shots, please set long feed
intervals between shots to give the machine time to slow down, or add a
mid speed shot in between.
For example, if you want
Ball #1 speed = 19 (fast)
Ball #2 speed = 12 (medium)
Then set feed rate to around 4 which will take 6 seconds for the machine to
slow down and allow for slower second ball.
Or set ball #2 to speed = 1, which will then make the ball machine slow
down quicker.
Dirt and Ink Build Up on Throwing Wheels
Excess dirt and ink on the throwing wheels can cause slow and inconsistent
ball throws. See the Maintenance and Cleaning section for more details.
Ball Placement During Oscillation
Position the machine on the baseline to adjust the angle if the machine is
favoring one side more than the other. If there is a strong cross wind over
the court you may have to face the machine facing more towards the wind
direction to allow for strong wind affecting ball direction. Making these
adjustments will make the machine throw balls evenly across the court
during horizontal oscillation modes.
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Section 5: Additional Information Section 6: FAQs
Why do the Motor buttons pop out?
A ball jammed maybe inside the machine and is blocking the normal
operation of the service wheels. Do not use wet, or very soft tennis balls as
these will cause a jam.
My machine is battery powered. Can I upgrade it to support mains
power?
Yes, you can change the battery to main’s power module. See http://www.
spinshotsports.com/power.html for more options.
Why does my machine always serve balls across the right side line?
Your machine needs to be centered in postion on the baseline to serve balls
evenly across the court. Turn the machine slightly more to the left to correct
this problem.
I see from the website that a phone remote is an option. Will that
be an optional extra for the player model?
No, the phone remote feature is a standard part for the player model.
How can I adjust the setting to slow down the ball shots when I
apply random height settings?
When user set the HGHT level to R or 0, the machine will shoot balls in
random height angle, and the ball speed is not controllable by the user. The
only way user can adjust the ball speed is by adjusting the ball SPIN. The
higher spin level will make ball slower.
Why does the machine move on the court in use?
This could happen on some slippery courts when the external battery option
is used. When the battery is taken out of the machine, the machine may
be too light to be stable. It could move a little bit due to recoil when the
machine shoots out the balls. To keep it stable, it is suggested the user either
puts a weight in the battery cage, or hangs the battery or other weight on
towing handle to increase its weight.
