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Discussion Starter · #1 ·
I'm not a big NHRA fan, but this stuff is amazing!


Some interesting Top Fuel dragster facts:

* One dragster's 500-inch Hemi makes more horsepower than the first 8 rows in a NASCAR race.
* Under full throttle, a dragster engine consumes 1 1/2 gallons of nitro per second, the same rate of fuel consumption as a fully loaded 747 but with 4 times the energy volume.
* The supercharger takes more power to drive than a stock hemi makes.
* Even with nearly 3000 CFM of air being rammed in by the supercharger on overdrive, the fuel mixture is compressed into nearly-solid form before ignition. Cylinders run on the verge of hydraulic lock.
* Dual magnetos apply 44 amps to each spark plug. This is the output of an arc welder in each cylinder.
* At stoichiometric (exact) 1.7:1 air/fuel mixture (for nitro), the flame front of nitromethane measures 7050 degrees F.
* Nitromethane burns yellow. The spectacular white flame seen above the stacks at night is raw burning hydrogen, dissociated from atmospheric water vapor by the searing exhaust gases.
* Spark plug electrodes are totally consumed during a pass. After 1/2 way, the engine is dieseling from compression-plus the glow of exhaust valves at 1400 degrees F. The engine can only be shut down by cutting off its fuel flow.
* If spark momentarily fails early in the run, unburned nitro builds up in those cylinders and then explodes with a force that can blow cylinder heads off the block in pieces or blow the block in half.
* Dragsters twist the crank (torsionally) so far (20 degrees in the big end of the track) that sometimes cam lobes are ground offset from front to rear to re-phase the valve timing somewhere closer to synchronization with the pistons.
* To exceed 300mph in 4.5 seconds dragsters must accelerate at an average of over 4G's. But in reaching 200 mph well before 1/2 track, launch acceleration is closer to 8G's.
* If all the equipment is paid off, the crew worked for free, and for once NOTHING BLOWS UP, each run costs $1000.00 per second.
* Dragsters reach over 300 miles per hour before you have read this sentence.

To put this all in perspective, If a Top Fuel Dragster launched from a standstill at the same time an RC211V got a running start and crossed the starting line at over 210mph, the bike would lose the race to the finish line.
 
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Discussion Starter · #2 ·
Re: Speaking of acceleration... (Rocket51)

AND , if you happen to be standing at the finish line when a Top Fuel Dragster/Funny Car goes by...you feel as if something hit you in the chest just from the raw power these things put out...
 
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Discussion Starter · #3 ·
Re: Speaking of acceleration... (old timer)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by old timer »</TD></TR><TR><TD CLASS="quote">AND , if you happen to be standing at the finish line when a Top Fuel Dragster/Funny Car goes by...you feel as if something hit you in the chest just from the raw power these things put out...
</TD></TR></TABLE>

That's one of the things you just can't get from watching it on TV ........ how standing at the start line when 2 fuelers leave the line it almost hurts. You can feel it in your chest as if getting hit by a baseball bat.

Whenever I go with someone who has never seen them before, I make sure to register their reaction during the burnout. "Oh my God, that's so loud".

I say, Ok cupcake, wait about 60 seconds and you will forever change your definition of loud. Gawd, I love it.

There is always more fun to be had with the noob, too, when you take them in the pits and get up close to a car when they are about to start it (making sure you are downwind). The people that know start to make room when the crew starts to put on their gas masks.

When the nitro fumes reach the nose, eyes and mouth of the unsuspecting NHRA rookie, yet another lesson is learned about the extreme nature of the sport. What FUN!
 
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Discussion Starter · #4 ·
Re: Speaking of acceleration... (JamesP)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JamesP »</TD></TR><TR><TD CLASS="quote">
That's one of the things you just can't get from watching it on TV ........ how standing at the start line when 2 fuelers leave the line it almost hurts. You can feel it in your chest as if getting hit by a baseball bat.
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It does hurt. And earplugs don't help at all!

I went to see these guys at Pomona once. I watched a few Pro Stock runs, but I was in the portajohn when the first Top Fuel cars made a pass. Holy sh*t! I thought the world was ending! I had no idea what to expect, but I didn't expect that!

Those things are just awesome. I think it's something everyone should experience once.
 
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Discussion Starter · #5 ·
Re: Speaking of acceleration... (Baasinator)

Amazing stuff, i should go to a drag race some time.
 
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Discussion Starter · #7 ·
Re: Speaking of acceleration... (Rocket51)

I have been to a few NHRA drag races and the sound of the fuel cars is unbelievable.

But just as nuts are the guys who ride nitro powered bikes, I watched them a Las Vegas a couple of years ago and they would carry the front tire the whole way through the 1/4 mile.
It looked like they had to use their legs to turn the bike because the front only touched the ground after they let off.
 
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