Sunday, August 25, 2013

What is the difference between drag racing and drift racing?

sports cars quarter mile times on 1956 Chevrolet Bel Air 4-door Sport Sedan 235 Blue-Flame Powerglide ...
sports cars quarter mile times image



pixieisgan


I wanted to know what the difference those two are?


Answer
Drag racing is when to cars side by, side, race from a standing
start in a straight line, usually for a distance if a quarter mile..
The fastest reach speeds of over 300 mph (about 480 kph), and
can cover a quarter mile from a standing stop, in 4.5 seconds..

Drift racing is done by front, or rear drive sports cars, and sport
sedans.. It's done on courses that can be in a stadium, or a large
parking lot.. The course is marked using pylons (rubber cones), or
other soft objects, and the cars run two at a time, racing each other
through the turn.. They throw the cars into the turns in a manor that
causes them to slide, often side, by side, as in a ballet, while racing..
The drivers are trying to beat each other to the finish, but they are
also judged on the style of the sidewards DRIFTS while turning, with deductions for hitting obstacles..

Please pardon the rudeness of some of these folks.. They they think
it's a prerequisite for being an F1 fan.. But I can assure you, that people like that are not representative of any real race fan..

Why do rifles and handguns of the same caliber differ in muzzle velocity?

Q. For instance, if you take your walther p-22 and put some cci mini mags in in, you'll get a lower muzzle velocity out of it than when you put those same mini mags in a 10/22. Why is that?


Answer
As the powder burns it builds up pressure behind the bullet which is what pushes the bullet forward.

As soon as the bullet gets to the end of the barrel that pressure can escape in all directions so it no longer pushes the bullet and therefore the bullet does not accelerate any more.

A longer barrel traps that pressure behind the bullet for a longer period of time which allows more time for that pressure to push on the bullet and cause it to accelerate.

Imagine if you took a high powered sports car to a racetrack. On your first run you floor it for the first quarter mile of track and measure the speed. On your 2nd run you floor it for the first half mile of track - you would expect a much higher speed after a half mile of acceleration. Same concept works with bullets traveling down the barrel of a firearm: longer barrel allows more time for acceleration and therefore higher velocity.




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