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.
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.
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!
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.
H Drive Racing Close Gear Ratio Transmissions - HONDA EK9 K20A
H.DRIVE RACING Products
Honda Civic Type R EK9 K20A
H.Drive Racing Close Gear Ratio
H.Drive Racing Final Drive
H.Drive Racing Super Single Clutch
H.Drive Racing Limited Slip Differential (LSD)
H.Drive Racing R Spec Damper
Last Ditch Racing: Subaru transmission abuse
What happens when you launch an Open Class rally car, "hard," on pavement?!
Don't watch if you don't want to know. I'll give you a clue-you don't go
anywhere-in first anyway! ;-)
Like opening a crypt, you get to see it just like we did. Like a
post-mortem on NCIS or CSI, Drew cracks the case.....just apply money.....
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
Car Transmissions & Synchromesh: "Spinning Levers" 1936 Chevrolet Auto Mechanics 10min
more at http://auto-parts.quickfound.net/
Auto mechanics playlist:
'"The transmission in the modern motorcar -- the mechanism that makes it
possible to have three forward speeds and a reverse -- is a series of
levers, levers that spin."
VS cartoon of Archimedes trying to move earth with a lever extending from
the moon or another planet in outer space; CU cartoon of Archimedes says
"Give me a lever long enough and I can move the world."
CU disembodied hands using antique can opener to open a can of peaches; CU
can open cutting through top of can.
Two boys playing on a seesaw.
CU pitch bar tool inserted between train wheel and track; man cranks large
lever to move freight car along track; CU disembodied arm pumps lever
lifting antique car off ground.
VS man demonstrates basics of the lever using triangular piece as fulcrum
and a long metal piece, man attaches 10 lbs. weight to one end of the bar
and a 5 lbs. weight to the other end; man hangs various weights from both
ends of the bar balancing the two by moving the fulcrum to various points
along the bar; man demonstrates how a gear is constructed through numerous
VS stop-motion animation of two wheels with paddles added one by one
turning wheels into paddle wheels and then into interlocking gears; cuts to
more sophisticated gear; cuts to metal gears; VS CU different types of
machine gears, worm gears, bevel gears, lopsided gears.
Disembodied arm pieces together piece by piece a basic motor with various
gear components; superimposed text appears labeling various parts;
superimposed arrows identify different gears; motor begins to turn; cuts to
CU car drives across frame; cuts back to crude motor; camera pans to
Revolutions Per Minute dial which reads 100 rpm, camera pans to another RPM
instrument dial which reads 30 rpm; CU crude model of gears in motor,
superimposed arrows show flow of energy through the system.
CU RPM instrument dial reads 60 rpm; CU churning gears of motor,
superimposed arrows she flow of energy through gear system; VS man
demonstrates on gears how shifting to various gears works.
CU arrow point to 90 rpm on deal labeled Revolutions Per Minute; VS man
demonstrating different gears.
Great shot 4 lanes of cars stopped at stoplight on city street; Travel
Bureau sign in background.
CU disembodied hand in white glove shifts clutch of car; CU motor shifting
gears; CU tire with Chevrolet hubcap begins to move; 1920s and 1930s cars
stopped at traffic light begin to move; CU inside car woman shifts gears;
car driving down tree-lined highway in possibly New York, what appears to
be the Statue of Liberty is seen off in the distance.
Woman enters drivers seat of Chevrolet, man waves start flag; car drives
off down street; CU disembodied woman's foot on gas pedal beside break and
clutch pedal with Chevrolet logos; CU speedometer shows car hitting 60 mph;
CU woman downshifts; CU speedometer goes down to 35 mph; car stops at
bottom of hill.
CU sign along rugged road 'Steep Hill Use Second Gear"'
Public domain film from the Library of Congress Prelinger Archive, slightly
cropped to remove uneven edges, with the aspect ratio corrected, and mild
video noise reduction applied.
The soundtrack was also processed with volume normalization, noise
reduction, clipping reduction, and equalization (the resulting sound,
though not perfect, is far less noisy than the original).
A machine consists of a power source and a power transmission system, which
provides controlled application of the power. Merriam-Webster defines
transmission as: an assembly of parts including the speed-changing gears
and the propeller shaft by which the power is transmitted from an engine to
a live axle. Often transmission refers simply to the gearbox that uses
gears and gear trains to provide speed and torque conversions from a
rotating power source to another device...
Manual transmission come in two basic types:
- a simple but rugged sliding-mesh or unsynchronized / non-synchronous
system, where straight-cut spur gear sets are spinning freely, and must be
synchronized by the operator matching engine revs to road speed, to avoid
noisy and damaging "gear clash",
- and the now common constant-mesh gearboxes which can include
non-synchronised, or synchronized / synchromesh systems, where typically
diagonal cut helical (or sometimes either straight-cut, or double-helical)
gear sets are constantly "meshed" together, and a dog clutch is used for
changing gears. On synchromesh boxes, friction cones or "synchro-rings" are
used in addition to the dog clutch to closely match the rotational speeds
of the two sides of the (declutched) transmission before making a full
GM 4L80-E Transmission Rebuild - Transmission repair
GM 4L80-E Transmission Rebuild - Transmission Repair
Here is a full rebuild video of a GM 4L80-E Transmission. We see the parts
that took for a successful repair. Complete overhaul kit with clutches and
steels and molded pistons. All bushings as well.
There's some items that I personally would've add to the parts list but
since this is for a Transmission Shop down the road this is what I was
Items I would add are:
Actuator Feed limit Valve, Transgo.
TCC Regulator Valve Kit from Sonnax.
1-2 & 3-4 Shift Valve Springs from Sonnax.
TCC PWM Solenoid.
And Shift Solenoids if needed.
The Basic Parts of an Automatic Transmission (Part 1)
Visit me at: http://www.ericthecarguy.com/
This is part one of my front wheel drive (FWD) automatic transmission
dissection video. In this video I cover the operation of clutches, bands,
accumulators, clutch drums, the oil pump, the valve body, valves, check
balls, seals and 'o' rings, as well as the construction and function of
many of the internal hard parts of an automatic transmission. To be honest
a rear wheel drive transmission isn't much different as many of the basic
components are the same. I guess what I'm saying is that you could use the
information in this video to have a basic understanding of a rear wheel
drive automatic transmission also. It is just a basic overview of the main
components. I don't get into theory and operation so much. Just the
general operation and identification of the parts. I may make more videos
on this topic based on the comments I get so feel free to ask questions and
perhaps I'll answer them in a future video on this topic. There will also
be a separate video on the parts and operation of the torque converter as
well. When that is posted I'll post links below to that video.
Part 2: https://www.youtube.com/watch?v=0Qf6O0oAs7U
Torque converter dissection: http://www.youtube.com/watch?v=_U_d_tBn-HQ
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video. EricTheCarGuy recommends safe practices when working with power
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