H Drive Racing Dog Box Transmissions - TOYOTA VITZ SEPANG CIRCUIT
H.DRIVE RACING Products
Dog Box Transmission on Toyota VITZ Super 1500 - SEPANG INTERNATIONAL CIRCUIT
H.Drive Racing Dog Box Transmissions
Dog engagement is normally used in racing applications where fast, precise shifting is needed. Dog gear engagement is facilitated by numerous large teeth (dogs) that mate into matching openings machined into the opposite surface of the drive gear. Unlike the synchro engagement, there is no synchronizing mechanism to assist in equalizing speed. Ideal gear selection—e.g. minimal clashing and wear of the dog rings—is achieved by quick shifts; the motto here is "the quicker the better", so bang away.
There is no depressing the clutch in the conventional sense like with the synchromesh transmission. A momentary break in engine load until the shift is achieved by a quick throttle blip or clutch depression. The driver will then experience the dog ring engaging with the next gear and the throttle can be reapplied. With practice this can be done in milliseconds. In fact, a driver can preload the stick shift in the direction of the next shift, and then when he either blips the throttle or clutch the shifter will quickly click in the desired gear.
With all else equal, dog-engagement gears are much stronger than synchro-engagement gears because without needing to make space for synchro rings, the gears themselves can be made thicker. The number of dogs (teeth) and the size of the openings determine the window of opportunity that the dogs have to engage during the shift event. Rings with a smaller number of teeth provide a more efficient, smoother shift quality. The downsides to this easier engagement are increased noise and abruptness on the shift.
MTI Racing Six Shooter Sequential Transmission
Shot by ChadBee Photography at Atlanta Motorsports Park.
MTI Racing proudly announces their new Six Shooter Sequential Transmission
Conversion System. This conversion comes complete with everything you will
need for no-lift, clutch-less upshifts and automatic rev-matching down
shifts. The conversion system is comprised of:
- sequential transmission
- shift linkage
- load cell shift knob
- neutral/reverse lockout
- electronic control unit (ECU)
Corvette platforms currently supported include: C5, C6, C6 Z06, and ZR1.
The upgraded transmission fits without vehicle modification and bolts
directly to a factory differential and driveline.
MTI Racing has partnered with Pfitzner Performance Gearboxes (PPG) for this
exciting endeavor. PPG is an Australian based company with a well-built
reputation as being one of the world's leading providers of gears for track
and motorsports. Specifically, PPG supplies many of the gears for the
Australian V8 Super Cars Series. With over 600 HP, these cars see massive
abuse every time they take the track.
Think how long it takes to blink your eye just once; the average speed is
about 300 milliseconds. With shift times as low as 50 milliseconds, gear
changes are done in a fraction of the time that it takes to complete one
blink of the eye. This gives you, the driver, the ability to shift faster than other drivers and creates a
true competitive edge over your opponents.
While the full video is still in production, enjoy the intro video created
from our exciting test program. Stay tuned for updates!
Dogbox Racing Evo 2013 Dsm/Evo Shootout Trip
Alex and the Dogbox Racing Evo. These were all his passes from the weekend.
Congrats on getting the car running the week of, and then going on to win
the Shootout! Talk about a consistent 8 second car. Taking the long way
Pfitzner Performance Gearbox - How to drive a dog box
The creator of these world class gear sets Simon Pfitzner, takes you
through a few ways to drive a dog engagement gearset in a street
Nissan R32 GT-R
Holden Commodore T56
Its quite a simple process, once you know how, you should get years of
faithfull service out of your new gear set.
1st cruise with dogbox & HKS T51R,
First night out testing my new PAR dogbox.
1st to 3rd straight cut gears with dog engagement, 4th helical gear with
dog engagement, 5th standard.
Proton Suprima S R3 piloted by Tengku Djan Ley at Sepang Circuit.
An exclusive preview of the Suprima S R3 piloted by Tengku Djan Ley at
Powered by a 1.6l CPS engine that is capable of a sub 2:40 lap time on the
said circuit. R3 is still on the verge of testing and researching and they
are confident that the Suprima S will be a worthy contender in the races
Keisler Engineering Introduces the Road & Track 6Speed!!!
***DAKOTA KITS NO LONGER AVAILABLE, OTHER CARS CALL OUR SALES DEPARTMENT***
Keisler Engineering's new Road and Track 6Speed features up and down
clutchless shifting and more than 1000hp and torque. This is a racing
transmission for use on the track only. Call or email for more
Check our our R&T Brochure-
Call Toll Free: 888-609-0070 ext. 1
Hey Folks - A note about this video.
There are 3 ways to downshift the Road & Track 6-speed:
1. clutchless with speed match - just blip the throttle before engaging the
2. clutchless without speed match - **the way I am showing** this will
momentarily break traction and it is the most abrupt shift method but also
3. use clutch - this will bring the speed matching up as you release the
Methods 1 and 3 will be the smooth methods, and no torque shock. Use that!
Super GT 2012 - Rd.8 Motegi Highlights
Highlights from the final round of Super GT 2012, Japan's largest touring
car championship. Car #1 GT-R, clinched series champion at the last race,
finished close 2nd.
For more car videos check: http//www.autostrada.tv
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Transmission Repair - GM 4L60-E Transmission Re-Assembly (Rebuild)
On this video we go through the re assembly of a 4L60E Transmission. I
tried to make this video shorter for you so I skipped the bushing
installation and installing the bolts on the valve body. But you can go to
the teardown video for reference on where each bolt goes, since they're
different sizes. I will make a follow up video on bushing installation.
Pfitzner Performance Gearbox in Australia. Manufacturers of some of the
worlds strongest gearbox parts for all road and race applications. Dog
engagement, straight cut, helical cut, whatever your need for road, rally,
drag, race and road applications.
2013 Toyota Yaris Hybrid-R Concept 4WD on TRD 18" 1.6 Turbo 420 hp
Making its World Premiere at the 2013 Frankfurt Motor Show, the Toyota
Yaris Hybrid-R concept car combines the advanced technology of the compact
volume seller Toyota Yaris Hybrid with high-performance engineering
inspired by Toyota's racing prototype, the TS030 Hybrid, which participated
at Le Mans and in the World Endurance Championship. The result is a highly
focused concept car dedicated to maximising driving pleasure on road and on
Hybrid technology is still young - with the first generation Toyota Prius
appearing in 1997, just 16 years ago. As such, it still has its future
ahead and a great potential to evolve in many different directions. Only
recently, hybrid technology has started to appear in racing programs, but
is not yet fully established in people minds as a performance oriented
solution. The Toyota Yaris Hybrid-R concept car is a clear showcase of
possible ideas for the development of hybrid technology for maximum
performance and increased driving pleasure.
The Hybrid powertrain
Based on the Yaris 3-door, the Toyota Yaris Hybrid R concept hybrid
powertrain configuration, employs a powerful and highly tuned 1.6l petrol
engine combined with two powerful electric motors to provide an
'intelligent' electric four-wheel drive capability.
The front wheels are driven by a 300hp 4-cylinder 1.6 turbo engine with direct injection specifically
developed by Toyota Motorsport GmbH (TMG) according to the rules of the
International Automobile Federation (FIA) for a Global Race Engine to be
utilised in different motorsport disciplines.
At the rear, each wheel is individually powered by a 60hp electric motor -
the same as those used in the standard Yaris Hybrid. The hybrid powertrain
system develops a total system output of 420 hp.
The two electric motors work as electric generators during the braking
phase, and supplement the petrol engine during the accelerating phases.
Just like in the TS030 Hybrid, the energy recovered during the braking
phase is stored in a super capacitor. In the Toyota Yaris Hybrid-R it is
located under the rear seat, where the Yaris Hybrid battery is usually
positioned. Compared to the standard NiMh hybrid battery, the super
capacitor has a higher power density and a fast power charge / discharge
speed. It is perfectly suited to the requirements of sporty driving on
track, which requires brief and immediate bursts of power.
A 3rd 60hp electric motor, located between the engine and the 6 gear
sequential transmission, operates as a generator in two different cases:
during deceleration to feed the super capacitor and during acceleration to
directly power the rear electric motors.
The latter will only happen when the engine power and torque exceed the
grip potential of the front wheels. The generator behaves like an advanced
traction control system, redirecting the torque as electric energy to the
rear wheels, to Boost the
acceleration and improve the handling rather than to simply limit the
A resolutely sporty design
The Toyota Yaris Hybrid-R features a more aggressive and emotional
interpretation of the design language that characterises recent Toyota
models. The Keen Look and Under Priority design philosophy is reinforced by
the adoption of newly designed headlights, a wider front grille and black
and blue details that contrast with the white body colour.
The specific bumper design incorporates two large air intakes and blue LED
daytime running lights. The intakes greatly contribute to the front brake
cooling, while the shape of the lower lip is designed to centrally channel
underbody air flow.
The flared fenders house bespoke 18-inch TRD wheels fitted with 225/40 R18
Michelin Pilot Sport Cup tyres featuring an asymmetrical tread design to
complement the Toyota Yaris Hybrid-R sporty philosophy. Ideally suited for
a mixed use on the road and on the track, this choice of high-performance
tyre is a symbol of the fruitful cooperation between Michelin and our
racing team involved in the World Endurance Championship series.
Grooved and perforated brake discs are gripped by six-piston callipers in
the front and four-piston callipers in the rear. Located on the rear
pillar, a quick opening fuel cap makes easier a quick refuel in the pits.
At the rear, Yaris Hybrid specific LED lights maintain the link with the
production car. An exclusive spoiler is mounted on the roof and the
redesigned bumper incorporates a large diffuser, with an Exhaust pipe framed by two air extractors.
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