Discussion
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?
First or worst rule applies.. and is there a tailwind speed limit for the purpose of records?
Edited by veryoldfart on Tuesday 6th July 11:37
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..
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.
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.
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.
Edited by veryoldfart on Tuesday 6th July 12:37
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.
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.


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.



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.
Edited by veryoldfart on Tuesday 6th July 12:37
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.
Edited by veryoldfart on Tuesday 6th July 12:37
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.
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.
Edited by veryoldfart on Tuesday 6th July 12:37
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.
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.
Edited by veryoldfart on Tuesday 6th July 12:37
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.
0.000 and 0.400 are exactly the same thing.
Gassing Station | Drag Racing | Top of Page | What's New | My Stuff



