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Discussion Starter · #1 ·
This might be dated - but power junkies might like it... I did:


"Acceleration" Defined.... (Per the Keith Black Website)

One top fuel dragster 500 cubic inch Hemi engine makes more horsepower
than the first 4 rows of stock cars at the Daytona 500.

Under full throttle, a dragster engine consumes 1-1/2 gallons of nitro
methane per second; a fully loaded 747 consumes jet fuel at the same rate
with 25% less energy being produced.

A stock Dodge Hemi V8 engine cannot produce enough power to drive the
dragster's supercharger. With 3,000 CFM of air being rammed in by the
supercharger on overdrive, the fuel mixture is compressed into a
near-solid form before ignition.

Cylinders run on the verge of hydraulic lock at full throttle. At the
stoichiometric (stoichiometry: methodology and technology by which
quantities of reactants and products in chemical reactions are determined)
1.7:1 air/fuel mixture of nitro methane, the flame front temperature
measures 7,050 deg F.

Nitro methane 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.

Dual magnetos supply 44 amps to each spark plug. This is the output of an
arc welder in each cylinder. Spark plug electrodes are totally consumed
during a pass. After halfway, the engine is dieseling from compression,
plus the glow of exhaust valves at 1,400 deg F. The engine can only
be shut down by cutting the fuel flow.

If spark momentarily fails early in the run, unburned nitro builds up in
the affected cylinders and then explodes with sufficient force to blow
cylinder heads off the block in pieces or split the block in half.

In order to exceed 300 mph in 4.5 seconds, dragsters must accelerate an
average of over 4G's. In order to reach 200 mph (well before half-track),
the launch acceleration approaches 8G's.

Dragsters reach over 300 miles per hour before you have completed reading
this sentence. Top fuel engines turn approximately 540 revolutions from
light to light! Including the burnout, the engine must only survive 900
revolutions under load.

The redline is actually quite high at 9,500 rpm. Assuming all the
equipment is paid off, the crew worked for free, and for once NOTHING BLOWS UP, each run costs an estimate $1,000.00 per second.

The current top fuel dragster elapsed time record is 4.441 seconds for the
quarter mile (10/05/03, Tony Schumacher). The top speed record is 333.00
mph (533 km/h) as measured over the last 66' of the run (09/28/03 Doug
Kalitta).

Putting all of this into perspective, picture this scenario: You are
driving the average $140,000 Lingenfelter "twin-turbo" powered Corvette Z06. Over a mile up the road, a top fuel dragster is staged and ready to launch down a quarter mile strip as you pass. You have the advantage of a flying start.

You run the 'Vette hard up through the gears and blast across the starting
line and pass the dragster at an honest 200 mph. The "tree" goes green for
both of you at that moment.
The dragster launches and starts after you. You keep your foot down hard,
but you hear an incredibly brutal whine that sears your eardrums and
within 3 seconds, the dragster catches and passes you. He beats you to the finish line, a quarter mile away from where you just passed him.

Think about it, from a standing start, the dragster had spotted you 200
mph and not only caught, but nearly blasted you off the road when he passed you within a mere 1,320 foot long race course.

... and that my friend, is ACCELERATION!
 

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I love it! thanks for posting that.

Been a NHRA fan for a very long time. Went to a dragstrip for the first time in 1965. I was actually at the Gatornationals in the mid to early '90's when Bernstein set the official 300mph record in T/F.

Now, I've been enjoying the AHDRA too!
 

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Discussion Starter · #3 ·
Totenkopf said:
I love it! thanks for posting that.

Been a NHRA fan for a very long time. Went to a dragstrip for the first time in 1965. I was actually at the Gatornationals in the mid to early '90's when Bernstein set the official 300mph record in T/F.

Now, I've been enjoying the AHDRA too!

Hey Tote -

Glad you liked that - I read it a few times! I'm bitten by the AHDRS bug too and looking forward to a few test and tune days at tracks near me. The LBD is definitely where it's at.
 

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interesting side note.......

Out at Otto's shop, he has 3 drag bikes there, a Pro Gas, Pro/X Mod and Pro Eliminator. Well, frequently this older guy stops in and we chat and I remember the first time he told Otto that if he wanted to stop messin' with race motors that use parts cleaner solvent(gasoline) and start gettin' serious with motors that use "real" race fuel(nitro) that he would help him. So, I stayed quiet and waited til this guy left and I asked Otto who he was. Turns out for many years back in the 70's he was one of the top Crew Chiefs for some of the big name nitro dragsters and funny cars back then. I only know him as Jerry, never did find out his last name yet. I've picked his brain several times now on how the nitro motors work and what the nuances are in keeping them alive. Absolutely facinating! I could talk with that guy for hours! He's dead serious about getting Otto to build a nitro motor, he wants to tinker and tune again.
 

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That was better than reading suggestive stories in a dirty magazine.
I think I've got a woody now.:xhere:
 

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Discussion Starter · #6 ·
Tote -

There's a fellow named Lakes who races in Australia and hangs with a fellow who races nitro bikes. Lakes posts on a few boards and we correspond. He gives some great post-race-day after action reports. I am sometimes amazed and always excited! It sure gets in the blood.

Mega - I hear ya!
 

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World's Fastest V-roder
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FXDRYDR said:
Tote -

There's a fellow named Lakes who races in Australia and hangs with a fellow who races nitro bikes. Lakes posts on a few boards and we correspond. He gives some great post-race-day after action reports. I am sometimes amazed and always excited! It sure gets in the blood.

Mega - I hear ya!
Believe me I know"It gets into your Blood" it's called the "SICKNESS",and every Racer I know has it just some of US worse then other's;) I Love drag racing but the Great white Dyno"either of the Salt Flat's" really is Humbling!Keeping a Motor together for 5 or 6 seconds is one thing but try it for 10 Miles"LSR Long Course",and you will be AMAZED how many Bikes and Cars don't Live long enough to make a Return run:corn:

P.S Just checked the price on a drum of Nitro and it's way cheaper then the C-44,and about the same as my C-16:confused: !Wonder how my Turbo would Like about 20% of that in the MIX?:corn:
 

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World's Fastest V-roder
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GC,
The TF ET. Record is Now
4.437 set by Tony Schumacher 10/01/05 in Joliet IL.
and the Top Speed is 336.15 MPH also set by Tony Schumacher in 05/25/05 in Hebron OH.:clap:

That's as of my Latest National Dragster I get every week;)

The one I really care about is the NHRA PSM=Pro Stock Motorcycle Record's since that what I'm Licensed to Race:cool:
PSM-ET Record is 6.939 set 10/01/06 by Angelle Sampey in Mohnton PA.
PSM-Top Speed Record is 197.45 MPH set by Andrew Hines 03/19/052 Gainsville FL. on his Screaming Eagle 04 HD V-rod:gun:
 

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SuperKaz said:
GC,
The TF ET. Record is Now
4.437 set by Tony Schumacher 10/01/05 in Joliet IL.
and the Top Speed is 336.15 MPH also set by Tony Schumacher in 05/25/05 in Hebron OH.:clap:

That's as of my Latest National Dragster I get every week;)

The one I really care about is the NHRA PSM=Pro Stock Motorcycle Record's since that what I'm Licensed to Race:cool:
PSM-ET Record is 6.939 set 10/01/06 by Angelle Sampey in Mohnton PA.
PSM-Top Speed Record is 197.45 MPH set by Andrew Hines 03/19/052 Gainsville FL. on his Screaming Eagle 04 HD V-rod:gun:
Newly re-crowned Top Fuel champion Tony Schumacher has had a full week to contemplate "The Run" -- his 4.428-second quarter-mile pass last Sunday evening 11/12/06 that won the Auto Club NHRA Finals, set a national elapsed time record, and clinched the 2006 title all at once
 

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World's Fastest V-roder
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OldMsocko said:
Newly re-crowned Top Fuel champion Tony Schumacher has had a full week to contemplate "The Run" -- his 4.428-second quarter-mile pass last Sunday evening 11/12/06 that won the Auto Club NHRA Finals, set a national elapsed time record, and clinched the 2006 title all at once
I don't think he did a 1% back up run" on that Record pass" to count it but I could be wrong?:cheers: I'm goin by my 11/17/06 National Dragster weekly Magazine,and really only care about The Motorcycles anyhow:hmmm: .
 

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Thanks for sharing. I ride all day on Sunday, but get home in time to watch 3 hours of drag racing. I can't wait for spring...it starts all over again, and hopefully to see Andrew win another championship.

Thorns
 

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SuperKaz said:
I don't think he did a 1% back up run" on that Record pass" to count it but I could be wrong?:cheers: I'm goin by my 11/17/06 National Dragster weekly Magazine,and really only care about The Motorcycles anyhow:hmmm: .
Just as a point of interest, he had to set the National Record to get enough points to win the Championship.

Quarter-Mile Record Holders
Updated 11/17/2006 Professional Categories
Class E.T. Speed Date Driver/Car Location
TF 4.428 11/12/06 Tony Schumacher - Long Grove, IL
Pomona, CA
TF 336.15 05/25/05 Tony Schumacher - Long Grove, IL
'05 Hadman R.E.D Hebron, OH
 

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SuperKaz said:
I don't think he did a 1% back up run" on that Record pass" to count it but I could be wrong?:cheers: I'm goin by my 11/17/06 National Dragster weekly Magazine,and really only care about The Motorcycles anyhow:hmmm: .
He ran a 4.45 in qualifing as his backup to the national record 4.428 pass. As said previously, he would not be the champion without the national record.

As a side note: I think he could have gone much faster that night, since the conditions were perfect. But Alan Johnson had to tune it to be within the 1% window so he could get the national record. I am amazed how they can tell you before the run what the time will be if everything goes right! :)
 

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Hey Kaz,
That looks like salt on your heels.

I have looked at some of your earlier posts. How is the vrod running?
 

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I love the smell of nitro-methane in the afternoon.
 

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World's Fastest V-roder
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RidingJerry said:
Hey Kaz,
That looks like salt on your heels.

I have looked at some of your earlier posts. How is the vrod running?
all 3 are still in Pieces"Racing these are $$$$$",but my Bonneville Bike is "90%" almost Finished:thumbsup: ! My new Turbo Drag race Motor is being finshed up as I type by Sam Terranova.It Going in my new Kosman V-rod?prty: !
EAW,
Thank's I was at the AHDRA Races"Helping out not Racing" and didn't get to watch the Big Show:blink: !I just read my latest"Last weeks" National Dragster Weekly ,AND IT HASN'T BEEN UPDATED YET:dunno:
 

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This might be dated - but power junkies might like it... I did:


"Acceleration" Defined.... (Per the Keith Black Website)

One top fuel dragster 500 cubic inch Hemi engine makes more horsepower
than the first 4 rows of stock cars at the Daytona 500.

Under full throttle, a dragster engine consumes 1-1/2 gallons of nitro
methane per second; a fully loaded 747 consumes jet fuel at the same rate
with 25% less energy being produced.

A stock Dodge Hemi V8 engine cannot produce enough power to drive the
dragster's supercharger. With 3,000 CFM of air being rammed in by the
supercharger on overdrive, the fuel mixture is compressed into a
near-solid form before ignition.

Cylinders run on the verge of hydraulic lock at full throttle. At the
stoichiometric (stoichiometry: methodology and technology by which
quantities of reactants and products in chemical reactions are determined)
1.7:1 air/fuel mixture of nitro methane, the flame front temperature
measures 7,050 deg F.

Nitro methane 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.

Dual magnetos supply 44 amps to each spark plug. This is the output of an
arc welder in each cylinder. Spark plug electrodes are totally consumed
during a pass. After halfway, the engine is dieseling from compression,
plus the glow of exhaust valves at 1,400 deg F. The engine can only
be shut down by cutting the fuel flow.

If spark momentarily fails early in the run, unburned nitro builds up in
the affected cylinders and then explodes with sufficient force to blow
cylinder heads off the block in pieces or split the block in half.

In order to exceed 300 mph in 4.5 seconds, dragsters must accelerate an
average of over 4G's. In order to reach 200 mph (well before half-track),
the launch acceleration approaches 8G's.

Dragsters reach over 300 miles per hour before you have completed reading
this sentence. Top fuel engines turn approximately 540 revolutions from
light to light! Including the burnout, the engine must only survive 900
revolutions under load.

The redline is actually quite high at 9,500 rpm. Assuming all the
equipment is paid off, the crew worked for free, and for once NOTHING BLOWS UP, each run costs an estimate $1,000.00 per second.

The current top fuel dragster elapsed time record is 4.441 seconds for the
quarter mile (10/05/03, Tony Schumacher). The top speed record is 333.00
mph (533 km/h) as measured over the last 66' of the run (09/28/03 Doug
Kalitta).

Putting all of this into perspective, picture this scenario: You are
driving the average $140,000 Lingenfelter "twin-turbo" powered Corvette Z06. Over a mile up the road, a top fuel dragster is staged and ready to launch down a quarter mile strip as you pass. You have the advantage of a flying start.

You run the 'Vette hard up through the gears and blast across the starting
line and pass the dragster at an honest 200 mph. The "tree" goes green for
both of you at that moment.
The dragster launches and starts after you. You keep your foot down hard,
but you hear an incredibly brutal whine that sears your eardrums and
within 3 seconds, the dragster catches and passes you. He beats you to the finish line, a quarter mile away from where you just passed him.

Think about it, from a standing start, the dragster had spotted you 200
mph and not only caught, but nearly blasted you off the road when he passed you within a mere 1,320 foot long race course.

... and that my friend, is ACCELERATION!
Just one little tidbit you didn't mention that I simply cannot get my mind around....at just 60 feet from the starting line a fuller is already going 100mph. SIXTY FEET!!!!
.
 

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Just one little tidbit you didn't mention that I simply cannot get my mind around....at just 60 feet from the starting line a fuller is already going 100mph. SIXTY FEET!!!!
.
Think about this one for a minute the black haze of smoke coming out of these fuelers during the launch is the clutches burning up. If it were possible to totally stick the tires at the hit with 10,000hp that SIXTY FOOT speed just might double.

Doubt the drive train could ever stand that king of punishment very long. Back in the days when these guys were testing the limits we used to see rearend gears, transmissions even flywheels exploding all the time.
Actually witnessed a 69 Corvette cut in half with a flywheel clutch explosion.
 

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And look at all the blowers Force went through in a whole season years ago. Almost every run. Another F/C exploded just as it launched and threw the whole body about 60 feet in the air. Standing just 5 or 6 feet from a fuel motor when they fire them in the pits is about as good as it gets. I used to follow drag racing but lost interest when they raised the idle rpm of the fuel motors about 15 years ago.
 
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