Times
Author
Discussion

markbe

Original Poster:

1,755 posts

247 months

Tuesday 6th July 2010
quotequote all
Hi All, question;
Is your reaction time added to your 1/4 mile time.
And if so, does this apply to all events?

Mark.

Taximan

119 posts

232 months

Tuesday 6th July 2010
quotequote all
It is not added to your 1/4 mile time, but to your total time that it takes to reach the finish line.

Slinky

15,704 posts

270 months

Tuesday 6th July 2010
quotequote all
Reaction time (RT) is measured from green light to leaving the start line
Elapsed time (ET) is measured from leaving the start line to crossing the finish line.

veryoldfart

1,739 posts

226 months

Tuesday 6th July 2010
quotequote all
in a double redlight elimination, who wins, the first to the finish line or the last to redlight....

and is there a tailwind speed limit for the purpose of records?

Edited by veryoldfart on Tuesday 6th July 11:37

Slinky

15,704 posts

270 months

Tuesday 6th July 2010
quotequote all
veryoldfart said:
in a double redlight elimination, who wins, the first to the finish line or the last to redlight....

and is there a tailwind speed limit for the purpose of records?

Edited by veryoldfart on Tuesday 6th July 11:37
First or worst rule applies..

The first to red light will be the one that is knocked out..

I've never seen tailwinds measured at SPR or SCR, so can't comment on whether there is a tailwind limit..

crikey

1,705 posts

232 months

Tuesday 6th July 2010
quotequote all
Slinky said:
Reaction time (RT) is measured from green light to leaving the start line
:splutter:

RT is measured from the last amber coming on to leaving the startline. The green light just indicates you've done it legally.

crikey

1,705 posts

232 months

Tuesday 6th July 2010
quotequote all
veryoldfart said:
is there a tailwind speed limit for the purpose of records?
No.

Think about it wink

obsession

94 posts

214 months

Tuesday 6th July 2010
quotequote all
Hi Guys,

The reaction time, is the time it takes the driver or rider to react to the green light coming on. In some instances in order to cut a good light drivers will try to leave on the last amber because of the delay in the chassis etc..reacting. Some cars will react to you letting go of the trans brake or clutch faster than others. It really depends on how well your chassis is set up.

The 1/4 mile time or E.T is the time it takes for your car or bike to break the starting line beams (i.e physically start to move)and break the finish line beams at the other end. The timer will not start until you break the starting beams, no matter how long you sit there with the green light on.

Of course if you leave to soon, you will pull a red. If your opponent also pulls a red, then the person that 'did it first' so to speak, is the loser.

Hope this helps.

veryoldfart

1,739 posts

226 months

Tuesday 6th July 2010
quotequote all
obsession said:
Hi Guys,
Of course if you leave to soon, you will pull a red. If your opponent also pulls a red, then the person that 'did it first' so to speak, is the loser.

Hope this helps.
unless you cross the centre line, as that is a bigger offence (i.e. first or worst)

Slinky

15,704 posts

270 months

Tuesday 6th July 2010
quotequote all
crikey said:
Slinky said:
Reaction time (RT) is measured from green light to leaving the start line
:splutter:

RT is measured from the last amber coming on to leaving the startline. The green light just indicates you've done it legally.
Every day's a school day.. wink

veryoldfart

1,739 posts

226 months

Tuesday 6th July 2010
quotequote all
crikey said:
Slinky said:
Reaction time (RT) is measured from green light to leaving the start line
RT is measured from the last amber coming on to leaving the startline.

The green light just indicates you've done it legally.
? surely the green is "go".....and the RT measures from that to the vehicle moving thru the beams....

Edited by veryoldfart on Tuesday 6th July 12:37

crikey

1,705 posts

232 months

Tuesday 6th July 2010
quotequote all
obsession said:
The reaction time, is the time it takes the driver or rider to react to the green light coming on.
veryoldfart said:
surely the green is "go".....and the RT measures from that to the vehicle moving thru the beams
Using a .4 pro tree:

T0 = Starter presses the button - all 3 ambers light

T1 = 0.4 seconds later the green light comes on

T2 = Car leaves stage.

If the car leaves stage between T0 and T1 then the red light will come on instead and the appropriate rules will apply.

On a legitimate run the time between T0 and T2 is the RT.



Using a .5 sportsman tree:

T0 = Starter presses the button - first amber lights

T1 = 0.5 seconds later the second amber lights

T2 = 0.5 seconds later the third amber lights

T3 = 0.5 seconds later the green light comes on

T4 = Car leaves stage

If the car leaves stage between T0 and T3 then the red light will come on instead and the appropriate rules will apply.

On a legitimate run the time between T2 and T4 is the RT.

crikey

1,705 posts

232 months

Tuesday 6th July 2010
quotequote all
Slinky said:
crikey said:
Slinky said:
Reaction time (RT) is measured from green light to leaving the start line
:splutter:

RT is measured from the last amber coming on to leaving the startline. The green light just indicates you've done it legally.
Every day's a school day.. wink
I reserve the right to point and laugh next time I see you hehe

Slinky

15,704 posts

270 months

Tuesday 6th July 2010
quotequote all
crikey said:
Slinky said:
crikey said:
Slinky said:
Reaction time (RT) is measured from green light to leaving the start line
:splutter:

RT is measured from the last amber coming on to leaving the startline. The green light just indicates you've done it legally.
Every day's a school day.. wink
I reserve the right to point and laugh next time I see you hehe
That's fair, I'm sure people have done worse in the past.. wink

liner33

10,861 posts

223 months

Tuesday 6th July 2010
quotequote all
veryoldfart said:
crikey said:
Slinky said:
Reaction time (RT) is measured from green light to leaving the start line
RT is measured from the last amber coming on to leaving the startline.

The green light just indicates you've done it legally.
? surely the green is "go".....and the RT measures from that to the vehicle moving thru the beams....

Edited by veryoldfart on Tuesday 6th July 12:37
I thought it used to be the former ie the perfect reaction on a pro tree being 0.40 which is the time from the last amber to green coming on but I thought it had changed to 0.00 being the perfect reaction ie the time taken from the green light to beams being broken

crikey

1,705 posts

232 months

Tuesday 6th July 2010
quotequote all
liner33 said:
veryoldfart said:
crikey said:
Slinky said:
Reaction time (RT) is measured from green light to leaving the start line
RT is measured from the last amber coming on to leaving the startline.

The green light just indicates you've done it legally.
? surely the green is "go".....and the RT measures from that to the vehicle moving thru the beams....

Edited by veryoldfart on Tuesday 6th July 12:37
I thought it used to be the former ie the perfect reaction on a pro tree being 0.40 which is the time from the last amber to green coming on but I thought it had changed to 0.00 being the perfect reaction ie the time taken from the green light to beams being broken
Nope. It's never changed from what I posted above.

The only thing differs is how it's displayed. 0.400 is the perfect Pro reaction time, but sometimes (like with SPR now) it is displayed as 0.000.

Barry B

505 posts

232 months

Tuesday 6th July 2010
quotequote all
crikey said:

Nope. It's never changed from what I posted above.

The only thing differs is how it's displayed. 0.400 is the perfect Pro reaction time, but sometimes (like with SPR now) it is displayed as 0.000.
SCR displays 0.000 as a perfect light too smile

martyn b

50 posts

209 months

Tuesday 6th July 2010
quotequote all
All of which helps you to decide (knowing how you generally react)whether to stage shallow or deep..

liner33

10,861 posts

223 months

Tuesday 6th July 2010
quotequote all
crikey said:
liner33 said:
veryoldfart said:
crikey said:
Slinky said:
Reaction time (RT) is measured from green light to leaving the start line
RT is measured from the last amber coming on to leaving the startline.

The green light just indicates you've done it legally.
? surely the green is "go".....and the RT measures from that to the vehicle moving thru the beams....

Edited by veryoldfart on Tuesday 6th July 12:37
I thought it used to be the former ie the perfect reaction on a pro tree being 0.40 which is the time from the last amber to green coming on but I thought it had changed to 0.00 being the perfect reaction ie the time taken from the green light to beams being broken
Nope. It's never changed from what I posted above.

The only thing differs is how it's displayed. 0.400 is the perfect Pro reaction time, but sometimes (like with SPR now) it is displayed as 0.000.
so i was right then it has changed at least at SCR

crikey

1,705 posts

232 months

Tuesday 6th July 2010
quotequote all
liner33 said:
crikey said:
liner33 said:
veryoldfart said:
crikey said:
Slinky said:
Reaction time (RT) is measured from green light to leaving the start line
RT is measured from the last amber coming on to leaving the startline.

The green light just indicates you've done it legally.
? surely the green is "go".....and the RT measures from that to the vehicle moving thru the beams....

Edited by veryoldfart on Tuesday 6th July 12:37
I thought it used to be the former ie the perfect reaction on a pro tree being 0.40 which is the time from the last amber to green coming on but I thought it had changed to 0.00 being the perfect reaction ie the time taken from the green light to beams being broken
Nope. It's never changed from what I posted above.

The only thing differs is how it's displayed. 0.400 is the perfect Pro reaction time, but sometimes (like with SPR now) it is displayed as 0.000.
so i was right then it has changed at least at SCR
No. The way it is measured has never changed. The way it has been displayed has.

0.000 and 0.400 are exactly the same thing.