h a l f b a k e r y"It would work, if you can find alternatives to each of the steps involved in this process."
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Manual gearshifts in passenger cars usually have several forward gears, but only one reverse gear.
This is inefficient.
With very little redesign, a transmission can be constructed with the same number of forward gears, and a reverser unit which makes all gears available in both forward and reverse.
This
technology is Baked and WKTE in various agricultural and off-road vehicles, yet does not exist in regular road cars.
Thus the vehicle can move as fast backward as forwards, without any unusual load on the powertrain.
But I don't think the idea would scale well to my motorcycle ....
_5b8th_20of_207_5d_...2fshifting_20wipers
[normzone, Dec 08 2017]
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Knew a drag racer who won a short race in reverse against a fellow going forwards - He'd probably appreciate this. |
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This is an excelllent idea because [insert reason here]. |
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Better yet, put separate forward and reverse gears on each driven
wheel of a
front-wheel-drive car, and put the rear wheels on castors, for a vehicle
that can spin on the spot. |
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Just have an adjustable camshaft and restart the engine in the opposite direction |
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Baked. Many 2-stroke marine diesels do exactly that. |
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Surely, if you run the engine backwards, the principle of microreversibility dictates that it should cool its surroundings while it generates petrol? |
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Yes, but if you run it for any length if time, the fuel tank
overflows. |
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The cost of installing progressively larger storage containers,
along with the extra bulk and mass, has so far proved a crippling
limit to commercialization. |
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British Rail nearly got there in the 1970's with their APT, the
Augmentable Petroleum Tank, but sadly teething troubles lead to
several passengers drowning in high-octane gasoline produced
by prolonged high-speed running, and the project had to be
shelved. |
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You will have to provide it with a supply of exhaust fumes. The tricky
bit is getting all the CO2 molecules to approach the exhaust intake on
exactly the correct trajectories. |
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