DANGER
Never scuba dive alone. Always dive under the buddy system. Diving alone could lead to serious injury and
death.
Due to the speed of the SAV-7 depth & pressure change may happen faster than usual.
The diver must be aware at all times with regards the status of his depth and direction and carefully monitor
his ascent rate as rapid surfacing and collisions could cause serious injury or death. Please practice driving
at low speed until you become accustomed to the handling of the scooter.
There are screen on the propeller cover for preventing from entangling wire and seaweeds.
However, do not dive with the SAV-7 at the seaweed area.
Characteristics of the Apollo the SAV-7 scooter
Speed control
The SAV-7 is a multipurpose underwater scooter equipped with an innovative "throttle-based
gearless drive mechanism."
Shifting gears while running.
On former underwater scooters, the gears could only be shifted by manually changing the pitch of the
propeller while the scooter was in a stationary position. Having to stop each time to change the speed was
difficult and inconvenient.
To overcome this problem, the SAV-7 is now equipped with a mechanism that changes the revolution
speed of the motor. Now the gears can be shifted while running, eliminating the need to stop each time.
The mechanism that changes the motor's revolution speed has made "gearless" speed change possible.
Speed is no longer changed in phases by manual adjustment of the propellers pitch.
Propeller pitch conversion mechanizm.
The SAV-7 is also equipped with a propeller pitch conversion mechanism.
17
For the safety diving
Clearing ears.
Ears are cleared in the same way as for regular diving. However, the speed will cause water pressure changes
faster. Therefore, ears must be cleared faster and more frequently than usual. As the diver's face is often turned
upward when in a riding position, it is best to draw the chin back when clearing the ears in order make the
auditory canal open up more easily.
Buoyancy adjustment.
Because the rider's hands are freed up during hands-free riding, he is able to operate the inflator and exhaust
valve as he normally would. Because the body is horizontal when riding the SAV-7, its position can be kept
stable by discharging air using the exhaust valves located at the shoulders or hips.
Using fins as a stabilizer.
During hands-free riding, fins are used as stabilizers.
The diver should try to keep the fins positioned near the center of the propeller cover during regular or high-
speed runs, keeping fins even with the propeller shaft of the SAV-7. The water current created by the
propeller will hit the fins. This will help counter the force that pushes the scooter to rotate in a counterclockwise
direction (rotation torque). When running at a slow speed, the upper body will lift slightly, causing the knees
to lightly bend. In this case, the diver must try to keep the fins horizontal to the propulsion direction, so that,
here too, they can act as a stabilizer.
Riding manual
Note
The speed for Pitch 1 and Pitch 2 are approximately the same. Pitch 1 has a higher acceleration rate,
and therefore top speed can be reached slightly quicker compared to Pitch 2. Minimal difference in the top speed
of Pitch 1 and Pitch 2 can be observed when the optimal level of propulsion resistance is reached.
