Polo Gti 1/4 mile slips

**Eddy** · 28-01-2007, 03:24 PM

Hoyhoy.
Shaneth, fairly faded, but the best I could do because I only just got a new printer-scanner. Anyway this is with the APR tune. The little girl is just getting better & better. It had less than 3000 kms on her when this was done. At 53 yrs of age this was my first go at it & the reaction times below were .009 & .068 with no red lights out of 5 runs. Still pleased with myself.
P.S. The run on the left was the worst, I missed 3rd peg.

**SidGTi** · 28-01-2007, 03:29 PM

14.7! Pretty good with the APR flash!

Any more plans for your car?

**shaneth** · 28-01-2007, 03:39 PM

Very nice eddy. Yes i will be taking mione down again once chipped. Those reaction times are fantastic.

**shaneth** · 28-01-2007, 03:57 PM

Ok im confused.

Reaction times work on a simple principle. It measures the time from when the last amber come on to when your front wheel clears the start line beam. Now as there is exactly 4 tenths of a second between lights, it then follows that a "perfect light" will be four tenths of a second - meaning that the vehicle has cleared the stage beam at exactly the same time as the green light came on. This is shown on the time slip as .400. Anything less than this means that you left too early and red lighted (fouled) and any more than this is wasted time sitting at the start line.

This says that i have to get a .4 or more reaction time to not foul, how did eddy get .009 and not foul. Is each drag strip different. Also i noticed that eddys runs were done at 18deg i wish mine was.

**shaneth** · 28-01-2007, 04:09 PM

Ok im going to answer my own question i think. This is off theWSID site.

Reaction time: The time it takes a driver to react to the green start light on the Christmas tree, measured in thousandths of a second. The reaction time counter begins when the last amber light flashes on the tree and stops when the vehicle clears the stage beam.

Full tree: The consecutive appearance of all three amber lights on the Christmas tree four-tenths of a second apart, followed four-tenths later by the green starting light. Used in all Group Two and Three categories, in which a handicap starting system is used to equalise competition. A perfect reaction time on a full tree is .000 at WSID.

So im thinking the measurement at WSID is taken from the green light not the orange light like Willowbank.

**Eddy** · 28-01-2007, 05:02 PM

Originally Posted by SidGTi

14.7! Pretty good with the APR flash!

Any more plans for your car?

Hoyhoy.
Sid, Naaaaa she's good as is & doesn't attract too much attention.
P.S. Quiet achiever.

**Eddy** · 28-01-2007, 05:20 PM

Originally Posted by shaneth

Ok im confused.

This says that i have to get a .4 or more reaction time to not foul, how did eddy get .009 and not foul. Is each drag strip different. Also i noticed that eddys runs were done at 18deg i wish mine was.

Hoyhoy.
Hey, Shaneth, put it down to pure ARSE or judgement or mathematical calculations, I done it. Not going to try again & stuff a good record.
P.S. To gain .4 sec., go one light earlier, call it cheating if you like, but it works.

**shaneth** · 28-01-2007, 05:23 PM

yeah but the willowbank site says if you get under .4 then you will be fouled. but you werent. See what i think it is is WSID takes .4 off your reaction time and puts that on the slip. So my best was .54 so i in fact took off .14 after the green light came on. DOes that make sense or am i barking up the wrong tree.

**Eddy** · 28-01-2007, 05:40 PM

Originally Posted by shaneth

yeah but the willowbank site says if you get under .4 then you will be fouled. but you werent. See what i think it is is WSID takes .4 off your reaction time and puts that on the slip. So my best was .54 so i in fact took off .14 after the green light came on. DOes that make sense or am i barking up the wrong tree.

Hoyhoy.
Reaction time: The time it takes a driver to react to the green start light on the Christmas tree, measured in thousandths of a second.
A perfect reaction time on a full tree is .000 at WSID.
What else can I say.
P.S. I was outside the perfect time by .009sec. so it could have been better.

**shaneth** · 28-01-2007, 06:34 PM

Eddy im sorry if my post sounded like i was saying you should have got fouled. I was just pointing out how different Drag strips are different with there reaction time measurements. i.e perfect reaction time is 0.4 for willowbank and 0.00 for WSID