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#3419452 - 07/09/14 11:40 AM Re: NHRA drag racing june 15. [Re: 02SE]
A_Harman Online   content


Registered: 10/01/10
Posts: 4181
Loc: Michigan
Originally Posted By: 02SE
Return to racing a full 1320 ft., and see what these cars are truly capable of.


Agree X10! 1000 ft drags are abominable.
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#3419949 - 07/09/14 07:27 PM Re: NHRA drag racing june 15. [Re: morris]
morris Online   content


Registered: 08/24/08
Posts: 3681
Loc: ks, wichita
win the championship? shouldn't be to hard when ONE teem has half of the cars at the track.

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#3435342 - 07/25/14 01:54 PM Re: NHRA drag racing june 15. [Re: morris]
chestand Offline


Registered: 09/20/11
Posts: 109
Loc: Kansas City
I began going to AHRA events in the early 70's. Things were quite different then. 1500 horsepower was the oft quoted figure for fuel motors then. Now, it's 10,000 horsepower. Now, they're racing the track. Track conditions change greatly with temperature and the NHRA does its best to present a good surface to all the racers. I attended Friday qualifying at Topeka in May and was impressed with what I saw - most all fully powered passes in both TF and FC. And the total auditory/sensory experience of the fuel motor cars. It's something everyone should experience once in their lives. Short of a Saturn V launch, there's nothing like it.

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#3435375 - 07/25/14 02:18 PM Re: NHRA drag racing june 15. [Re: morris]
02SE Offline


Registered: 12/30/05
Posts: 319
Loc: The Canyons
Just an FYI, the 10,000 HP figure that is now widely mentioned, is still on the low end. It's in the vicinity, but still far too low most of the time.

The way we know this, is measuring the driveline shaft deflection. If a driveline of known strength deflects X amount, we know there is X amount of torque being applied to it. From there it's a simple mathematical equation to determine the HP.

Of course we don't measure shaft deflection to determine the HP. That is just a side effect of data-logging the clutch performance.

I used to laugh at the often quoted 8000 HP figure. For at least the last eight years, it has been far beyond that.

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#3435455 - 07/25/14 03:35 PM Re: NHRA drag racing june 15. [Re: 02SE]
SteveSRT8 Offline


Registered: 10/10/08
Posts: 14751
Loc: Sunny Florida
Originally Posted By: 02SE
Just an FYI, the 10,000 HP figure that is now widely mentioned, is still on the low end. It's in the vicinity, but still far too low most of the time.

The way we know this, is measuring the driveline shaft deflection. If a driveline of known strength deflects X amount, we know there is X amount of torque being applied to it. From there it's a simple mathematical equation to determine the HP.

Of course we don't measure shaft deflection to determine the HP. That is just a side effect of data-logging the clutch performance.

I used to laugh at the often quoted 8000 HP figure. For at least the last eight years, it has been far beyond that.


Little known details! Thanks for those gems. Maybe one day we'll have a dyno for ya. Those runs would be ferocious...
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#3435551 - 07/25/14 05:20 PM Re: NHRA drag racing june 15. [Re: 02SE]
route66mike Offline


Registered: 07/09/14
Posts: 147
Loc: Ft. Collins
Originally Posted By: 02SE
Just an FYI, the 10,000 HP figure that is now widely mentioned, is still on the low end. It's in the vicinity, but still far too low most of the time.

The way we know this, is measuring the driveline shaft deflection. If a driveline of known strength deflects X amount, we know there is X amount of torque being applied to it. From there it's a simple mathematical equation to determine the HP.

Of course we don't measure shaft deflection to determine the HP. That is just a side effect of data-logging the clutch performance.

I used to laugh at the often quoted 8000 HP figure. For at least the last eight years, it has been far beyond that.


How were you measuring driveshaft twist position? Strain gauges?

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#3435972 - 07/26/14 01:28 AM Re: NHRA drag racing june 15. [Re: route66mike]
02SE Offline


Registered: 12/30/05
Posts: 319
Loc: The Canyons
Well... lets just say there is more than one way to measure the torque being passed through a driveline.

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#3447348 - 08/05/14 10:40 PM Re: NHRA drag racing june 15. [Re: morris]
Rose Offline


Registered: 08/05/14
Posts: 20
Loc: California,US
Racing is using more fuel than ordinary driving. One question, is the fuel tank of motor bikes,cars are bigger than ordinary vehicle?

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#3448076 - 08/06/14 04:29 PM Re: NHRA drag racing june 15. [Re: Rose]
02SE Offline


Registered: 12/30/05
Posts: 319
Loc: The Canyons
Originally Posted By: Rose
Racing is using more fuel than ordinary driving.


It is? Additionally, what is "ordinary" driving?

Originally Posted By: Rose
One question, is the fuel tank of motor bikes,cars are bigger than ordinary vehicle?


What motor bikes and cars? What is an "ordinary" vehicle?


Edited by 02SE (08/06/14 04:30 PM)

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#3448558 - 08/07/14 06:18 AM Re: NHRA drag racing june 15. [Re: 02SE]
chestand Offline


Registered: 09/20/11
Posts: 109
Loc: Kansas City
I have no earthly idea what the question/statement means. It reads as if written by a person for whom English is at best a second language.

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#3448797 - 08/07/14 11:57 AM Re: NHRA drag racing june 15. [Re: morris]
bdcardinal Online   content


Registered: 06/03/05
Posts: 6488
Loc: Santa Barbara, CA
Fuel cell size is usually determined by the regulations set by the sanctioning body.
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#3448846 - 08/07/14 01:20 PM Re: NHRA drag racing june 15. [Re: chestand]
02SE Offline


Registered: 12/30/05
Posts: 319
Loc: The Canyons
Originally Posted By: chestand
I have no earthly idea what the question/statement means. It reads as if written by a person for whom English is at best a second language.


I agree with you. That's why I asked for clarification.

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#3451621 - 08/10/14 03:27 PM Re: NHRA drag racing june 15. [Re: morris]
gman2304 Offline


Registered: 08/11/11
Posts: 617
Loc: n.c.
I stopped watching and attending NHRA events when they went to the 1,000 foot mark for the fuel cars.

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