your propeller to the way you boat.
Propellers currently available with PVS :
High Five, Laser II , Mirage Plus, Offshore,
Revolution 4, Tempest Plus, Trophy Plus
You don't boat the same way, with the same number of
people, under the same conditions every time. PVS propellers
are adjustable for changes in load and environment.
Mercury PVS propellers let you
choose how much ventilation is drawn out the vent
holes on the side of the prop. Propeller ventilation
makes a big difference in how your boat behaves.
Because nobody but you can tell when you hit that
perfect on-plane performance, PVS makes it easy for
you to adjust by simply changing the propeller's vent
plugs for optimum acceleration.
When your boat accelerates, exhaust is drawn
out of the vent hole located behind each
propeller blade. When the next blade strikes
this aerated water, it pushes through the aerated water easier than it would
through "solid" water. By controlling the amount of aerated water, you can pretty
much dictate how quickly your engine rpm rises. Once you're on plane, the water
flows over the vent holes and seals in the exhaust. This allows the propeller to
again operate in solid, non-aerated water.
Do I need the plugs in every time I boat and what if I lose one?
You don't need the plugs to operate your propeller normally. If the
plugs aren't in, the prop will just behave as if it has an extra-large vent. If
the conditions are right, you might even want to leave them out. And if you
lose one, they're easily available anywhere Mercury Propellers are sold.
Do I have to use the same plug size in each vent?
Not at all. Mix and match all you want, depending on the conditions.
Each vent can take any of the four plugs
at any time, without affecting the performance of the other vents.
How easy is it to change vent sizes?
It's a whole lot easier than changing propellers. The vents fit snugly
enough that you won't have to worry about them coming out, no matter
what the conditions. However, they're easy enough to remove and replace
when conditions change.
For product that can't use a Mercury prop, see Venting a prop