Race Quick Shifters
About Cordona PQ8
Precision Racing Shifter
A Cordona PQ8 Racing Shifter is a high-tech device that
will increase the performance of your motorcycle or anything powered by a
motorcycle engine by enabling lightning fast up shifts without backing off
the throttle or disengaging the clutch, electronically. The Cordona
shifter has been developed over a period of 2 years by professional
roadracers as well as beginners, it has high quality internal components
from the U.S. the E.U. and other countries.
The PQ8 has the
latest MotoGP Technology built in and is fully computerised
(25MHz CPU). Programming is done with two buttons.
Compu Shift calculates a perfect kill time for each up shift according to
engine conditions, acceleration, load and rpm, with a selection of 500
different kill times , adjustable between 40-80 ms.
The PQ8 makes the
ECU believe the engine is still running at up shift and so allows for a
very smooth and stable upshift without any fault messages or leaned or
enriched fuelling. It comes with plug & play connectors for Denso
& Mitsubishi coils, as used on most sportsbikes. For other
coils there is an easy and straight forward installation and hardware for
splicing is included with the Shifter.
The automatic rpm is fully
adjustable to prevent the engine from stopping when put in neutral from
1st while at idle.
There is a smooth shift built
in to ease the shock loads on the gear box and chain to lesson loss of
traction at up shift. All Cylinders are killed simultaneously at up
shift but are brought back on in a computer controlled sequence in
conjunction with the Compu shift. The PQ8 has a waterproof design
and an aural horn for test and start up acknowledgment, There
is Shift Light circuitry built in (LED sold seperately) . The Auto Shift
can be selected to activate the shifter automatically at an adjustable
rpm. (useful for drag racers going below the break out time, simply
reduce the upshift RPM to go slightly slower)
A normal up shift
usually means that the engine is disengaged from the rearwheel/gearbox for
a distance covered of about 3 m/30 ft, depending on how fast the vehicle
is moving. Vortices are also produced in the intake manifolds due to the
closure of the throttle, something that will restrict the flow of air into
the engine when the throttle is opened up again.
With a Cordona Racing
Shifter the distance covered at up shifts will decrease to about 1m/3 ft
and no vortices will occur at the air intake since the throttle is kept
wide open at up shifts. This will make up for a lot of ground on a lap
around a roadracing track or on the 1/4 mile. By installing Cordona Racing
Shifters on testbikes we have lowered 1/4 mile times with 0.2 sec. We have
also lowered laptimes on a roadracing track by as much as 1.0 sec/lap.
Usually 0.2 sec on the 1/4 mile and 1.0 sec on a roadracing track means
parts and engine work for at least $3000.00.
can probably imagine yourself a race to the flag between two racers on
identical motorcycles with the only difference being that one of them has
a Cordona Racing Shifter installed. The rider on the bike equipped with
the shifter will edge away from the other at every up shift and most
likely cross the line several meters/yards in front of the other rider.
|The Cordona Racing
Shifter is smaller and lighter than its competitors, the whole kit is only
300 g, killbox measures 95 x 70 x 28 mm.
The Cordona Racing
Shifter works with a switch attached to the gear linkage of a motorcycle,
the pullswitch sends a signal to a "killbox" that will interrupt the
ignition for a preset time when the gearlever is activated. While the
killbox interrupts the ignition (adjustable between 10-150 ms) the
drivetrain will slack and the next gear will engage and immediately
thereafter the "killbox" turns the ignition back on again. The whole up
shift is done without touching the clutch or backing off the throttle.
shifts can be done in rapid sequence, the shifter doesn't need any "charge
time" between up shifts like other shifters.
PQ8 SBK interrupts power to the coils, between the CDI and coils. The PQ8
uses new thinking to inhibit ignition and WILL NOT affect injection lights
like most other shifters on the market. Some other shifters cut the power
to the CDI at high RPM and cause damage to the ignition system.
Please note that the
Cordona PQ8 Racing Shifter does not just ground out the coils with the
killbutton loop like some other shifters, something that will cause
missfiring and eventually damage to the engine. There is no extra wear on
the ignition system due to the use of a Cordona Racing Shifter since the
shifter is only turning the power to the ignition coils on and off, with
the help of advanced internal anti missfiring components. The wear on the
clutch is actually reduced since it is not used at up shifts. Any
motorcycle can easily be returned to its original ignition system in the
event the owner is selling his bike and would like to keep the
shifter. The PQ8 comes with plug and play connectors for most bikes.
All racers know that
"Murphy" is out there on the track and that his "law" is in full effect.
We are therefore building Cordona Racing Shifters with an on/off switch.
In the unlikely event the shifter would go bad during a race, flipping the
On/Off switch to Off will restore the motorcycle's original ignition
What is in the kit
The PQ8 kit
includes the CPU, plug & play wiring harness ,a pullswitch,
stainless steel bracket, stainless steel pullarm, velcro for kill
box mounting, stickers, and step by step