My 1977 MGB is a great car for learning how to heel and toe double declutch when downshifting just like the race car drivers of yesterday. A smooth heel and toe downshift is an art form and really helps on the twisty bits where balance and control are helpful
What happens in the transmission when you double clutch / Heel Toe Downshift???
Trying to do everything in one take is nerve racking, as it's nearly
impossible to do perfectly. Minor corrections: I said the clutch pedal and
throw out bearing are not wear items, I meant not high wear items, compared
to the clutch disk. Also, when I mention buying a cheap car to practice, I
mean if you own a manual transmission track car that is not your daily
driver. Finally, I didn't talk about the syncros. You can do this with
one clutch pedal action, but you make the syncros speed up the intermediate
shaft. When you double clutch, you bring the intermediate shaft up to
speed with the clutch disc, which has more capacity to do so than the
synchros. Minor point, but you will see prolonged synchro life when you
double clutch. Also, it is not the mass of the servo or engine but the
power created by electricity of gasoline that is responsible, but the mass
is responsible for the inertia.
Atkinson 1971 Silver Knight lorry. mp4
This is a 1971 Atkinson 'Silver Knight' timber crane. It spent most of it's
working life as a tractor unit pulling trailers loaded with bricks and pre
cast concrete buildings for it's original owner based at Aylesbury
Buckinghamshire U.K. It has covered a considerable mileage with no reported
breakdowns.The design dates back to the 1930's with a cab frame constructed
of angled steel and timber. Early cabs were faced with 'tin' sheet but this
was changed in the 1960's to the new fangled fibreglass. No air sprung seat
in this cab and a young lorry driver of today may complain of the lack of
power steering and pain in his left leg due to the lack of an air assisted
clutch. No sleeper cab either for our pampered driver. His 'bed' consisted
of a home constructed board placed on the central engine cover and
supported by the seats. Oh and did I tell you that a cab heater was an
optional extra in 1970..? Saying this the Atkinson was considered to be the
'SCANIA' of it's day with it's wrap round windscreen and relative comfort
compared very favourably with vehicles from the previous decade. It is
surprisingly a pleasure to drive and the old vinyl seat is very
comfortable. The engine has a powerful roar that was music to the ears of a
'traditional' lorry driver of it's day. The gearbox is a David Brown six
speed constant mesh i.e. no synchromesh, requiring the driver to match road
speed to engine /gearbox speed to enable smooth changes. This driving
procedure is known as double declutching and would open a whole new world
to our young driver.Get it wrong and you crunch the gears horribly [Ha Ha!]
or come to a complete stop before you could once again engage first gear
and start all over again! The engine is a road modifed Gardner 180 bhp
which was widely used in marine applications, very reliable and economical.
It's original design dates back to the 30's and were produced in four, five
and six cylinder versions. The engine design slowly evolved with
improvements made where a definite modification would improve efficiency
and build quality. This ensured reliability which is probably the most
important factor in the haulage business. The cost of diesel fuel back then
was not the problem as it is today.180 BHP sounds very small compared with
the 400bhp engines found in modern lorries but it easily pulled a 40 ft
trailer and formed the backbone of the heavy haulage fleets of it's day.
ERF and Foden were also noted users of the Gardner engine particularly with
their tanker and tipper bodied vehicles They are not a fast engine but pack
terrific torque relying on the skill of the driver and his use of the
gearbox to keep things moving. The Exhaust tends to smoke a bit when first started
but this soon clears when under power and the engine warms. I say warms
because the Gardner is a very cool running engine.
With the arrival of the motorway network in the 1960's more speed was
demanded by the hauliers and Gardner introduced the incredible straight
eight 240 BHP engine for use in maximum weight vehicles and Atkinson began
to offer the Cummins and Rolls Royce diesels as alternatives. Gardner
engines were well loved by haulage companies and workshop mechanics but the
days of the night trunk drivers slogging up the A1 were beginning to be a
thing of the past. The white hot period of Gardner engined heavy haulage
fleets was nearing it's end.
After retirement by it's original owner the vehicle was converted to a
timber tractor and was used for this purpose for a number of years. It is
fitted with a heavy Garwood winch driven by a 1955 six cylinder BMC diesel
engine via its original gearbox. It is now in preservation and attends
vintage vehicle and steam shows during the summer. Viewing the clip since
upload I feel the driving bit is far too long so if you get bored, just
fast forward through it! I hope you find at least parts of this video clip
1974 Midget - Removing the Clutch
The goal of this particular project is to get the car roadworthy. A know
condition prior to us getting the car was that the clutch needed to be
However, it turns out that the throw-out bearing was shredded and was
actually the cause of the failure. The clutch plate itself was actually in
Not a wasted effort though, we would have had to do the same thing to
repair that as well. This way everything will be replaced and that will be
solid for a good while.
Drive in a MGB
A guy drives his 1978 MGB roadster through the countryside on a cold day.
Honda DCT Module (Dual Clutch Transmission)
Technical explanation: Second-generation Dual Clutch Transmission
With the aim of offering products that play a useful role in the lifestyle
of its customers, Honda launched the Super Cub C100 (50cc) in 1958.
Equipped with an automatic centrifugal clutch mechanism which allowed gear
shifting without the need for clutch operation, the Super Cub C100 was a
pioneer in the era of automatic systems. In 1962, the Juno M85, which was
equipped with a continuously variable hydraulic transmission, was launched.
The Eara (750cc) released in 1977 was the first largesized motorcycle in
Japan to feature a torque converter automatic transmission. In 1980 that
was followed by the Tact, a machine equipped with the Honda-original
continuously variable transmission, the V-Matic. To this day, Honda has
continued to develop and market motorcycles equipped with a variety of
automatic transmission mechanisms.
Based on the conviction that the demand for automatic transmissions will
increase in the future, even for very sporty models, as people come to
regard motorcycles as vehicles that cater to their highly personal tastes,
Honda has been conducting research and development into new automatic
transmission mechanisms suitable for sports motorcycles for many years now.
Against this backdrop, a shift in the age of motorcycle enthusiasts has
seen a growing interest in automatic-transmission motorcycles as
recreational vehicles for discerning adults of a certain age.
In response to such views voiced by our customers and in order to offer a
new way to enjoy motorcycles, Honda launched the DN-01 large sports cruiser
motorcycle in 2008. This model was the embodiment of a brand-new concept
and came equipped with the Human-Friendly Transmission (HFT), a new
automatic transmission which incorporated technology developed
independently by Honda. Following that, in 2010, Honda launched a large
sports tourer motorcycle, the VFR1200F Dual Clutch Transmission, which came
equipped with a Dual Clutch Transmission with automated clutch and shift
operation, a world's first for motorcycles. This Dual Clutch Transmission
is a lightweight, compact system that can be mounted without requiring
major modification to the existing engine layout. It employs electronic
control technology to deliver the precise accelerator control required of
motorcycles, with a direct feel for naturally smooth starts and gear
We hope that as many customers as possible will try out this system and
experience the direct ride feel and power of our Dual Clutch Transmission
system and to that end will continue to make it more lightweight, compact
and affordable without impairing its performance.
Second-generation Dual Clutch Transmission
The development team Exhaustively
discussed what would constitute a second-generation Dual Clutch
Transmission consistent with the concept of aiming for a "lightweight,
compact engine layout in pursuit of a ride to suit cultivated tastes." The
team arrived at the following two directions, which have been strategically
1. Normal Dual Clutch Transmission Evolution
Further evolution of existing Dual Clutch Transmission technology
2. Exploration of the optimal specifications to realize the development
Review of the specifications required to achieve "a ride to suit cultivated
a trip on a vintage bus.has a crash gearbox so double de clutch needed for
gears.and no power steering but fun to drive.
How to double clutch downshift in classic sports cars using heel-toe technique
In this video, I demonstrate double clutch downshifting to for smooth
downshifting in classic cars. At bugeyeguy.com, we specialize in old
British sports cars and many of them have worn transmissions that can be
hard to downshift. By double clutching, smooth downshifts are easy, even
with a transmission with worn synchros. Here, I'm driving a 1963 Morris
Minor Traveler with a 5 Speed Datsun 210 transmission, a popular upgrade.
MGB V8 0-100mph
NONE of this is full throttle and all soft shifting... while juggling
camera and hat and a hard right hand curve. Think car is good for 130+ with
4sec 0-60 once broken in. Here just got new oil (Brad Penn) and she's at
200 miles since new Rover aluminum 4.6 ?300HP? .During the agonizing seven
years it took to get this car back from the engine/suspension whiz who said
it would take a year or less (constant excuses) to finish, I kept telling
him "you gotta complete it - my health is deteriorating" but IMHO he didn't
listen/care. It is a wonderful car but with recent twin charcot feet and
other disabilities I have to sell it, unable to safely drive it anymore.
Double Clutching & Heel Toe with G25
Video difficult to realize in a real car (hand position on gearbox stick +
feet on pedals synchro)
Wheel is Logitech G25:
I made Break pedal thicker because pedal aren't in the same plane.
Game used for the demo is rFactor.
Seat from http://playseats.biz/