Polo Gti 1/4 mile slips

[shaneth]

http://i128.photobucket.com/albums/p162/shanethb/TnT2701_07.jpg

Well as you can see the fastest was a 15.8. Its got more potential in it. Just bogged down to much in nearly every run except the last. where it was wheel spin city. All in all not a bad night. What are your thoughts.

[Kai]

15.8 is what the motor mag came up with (or wheels)

[Timbo]

Great work! Looks like you had fun. On your fastest, you really cut back your reaction time. :cool:

[shaneth]

Yes but unfortuneatly reaction time is only good if you get the launch right. :mad:

[SidGTi]

Hey Shaneth is that with the traction control on or off?

[shaneth]

It was a pretty crappy night. I dont go into it cause i dont like blaming anything else besides the driver. the 9.20pm run was with traction on (accidently) the rest were off.. the 15.8 was off. I say it has more cause i let the wheels spin and then slightly backed off and when it got traction it bogged. I think i should be able to hit my goal of 15.5 maybe next time.

[shaneth]

with a track temp hovering are 37 it was a hot night. can have been ideal for the little side mount. that conbined withthe fact i hadnt practiced launching it at all since i bought the car till the first run. next time ill be better prepared.

[evorobin]

It is a heavy car though. You need the extra 35KW a chip would give to comfortably dip under 15's ;)

[shaneth]

;) yeah i knowits a big girl all 1270+ with me in it. but i know it has more potential than 15.8. and yes a chip will dip me into 14. but i want to know i have been able to get the most out of it standard before i go further. it may sound silly but its just me. And now i know i can go quicker i will have to prove it. :)

[evorobin]

Guy I know took his S3 to the drags and only managed 15.5 but yeah in theory a 14.9 std is possible so goodluck with that :D

[Eddy]

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.

http://home.exetel.com.au/rekrek/scan001003.bmp

[SidGTi]

14.7! Pretty good with the APR flash!

Any more plans for your car?

[shaneth]

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

[shaneth]

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. :D

[shaneth]

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]

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]

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. :D
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]

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]

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]

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

[Bug_racer]

Firstly good onya for going out there with a stock polo on a hot night and having a go .

The times are pretty good , it looks like the launch is where your loosing time , if it wheelspins too much lower your tyre pressure slightly . Getting the launch right is critical in getting a good et it doesnt affect your mph as much though . Ive found that launching it around 3500 rpm is probably the best rpm for a stock turbo and gently slipping it so it doesnt grab too hard . That way its right on boost when it does grab , also I would be leaving it in 3rd across the finish line , you loose about .3 sec on a gear change ! But overall thats a good result on a hot night . With a perfect launch and the temperature around 20 you should dip into the low 15's . Also a bit of weight reduction helps too !!! . Looking forward to seeing some more timeslips soon :)

[Eddy]

Firstly good onya for going out there with a stock polo on a hot night and having a go .

The times are pretty good , it looks like the launch is where your loosing time , if it wheelspins too much lower your tyre pressure slightly . Getting the launch right is critical in getting a good et it doesnt affect your mph as much though . Ive found that launching it around 3500 rpm is probably the best rpm for a stock turbo and gently slipping it so it doesnt grab too hard . That way its right on boost when it does grab , also I would be leaving it in 3rd across the finish line , you loose about .3 sec on a gear change ! But overall thats a good result on a hot night . With a perfect launch and the temperature around 20 you should dip into the low 15's . Also a bit of weight reduction helps too !!! . Looking forward to seeing some more timeslips soon :)
Hoyhoy.
Shaneth.
This statement is spot on. My best run was the only time I hung onto 3rd peg. Also dropped the tyre pressures down to 25 lbs & the revs on take off, after the first run which was all wheel spin.
P.S. At Eastern Creek the reaction times are excluded from actual times on the amateur nights.

[Kai]

Speaking of tyres pressures, what would you recomend for normal driving.

[Eddy]

Speaking of tyres pressures, what would you recomend for normal driving.
Hoyhoy.
Kia here is what Shaneth & Myself come up with earlier on.

Quote:
Originally Posted by shaneth
Well went to the servo to check my tyre pressure and found that they dont use BAR incriments on there gauge so i have done a bit of research to save everyone else.

Tyre Bar Pressure PSI pressure
Front 2.8 40
Rear 3.2 46

Now according to Michelin uk site it says to add 5 psi to the cold recommendation if your tyres are hot.

I hope this helps

Hoyhoy.
Shaneth, These figures are O.K. if you have 5 passengers & luggage.
I myself have'nt had anyone in the rear seat as yet, so then the figures change a bit.
Fr. 2.6--38lb. [ As recommended for 2 passengers.]
Re. 2.4--35lb. [ " " " " " .]
As this little girl is mine & the wife has her own car, I changed the pressures even to these figures.
Fr. 2.5--36lb. [ This also helps with the torque steer.]
Re. 34lb. [ " " " " " " " .]
__________________

[GTIJNR]

ha, i ran at calder park last fri as well, stock as a rock and 34 psi in the front tyres lol reaction time lol, 15.4 at 88 mph... i'm ok with that... 4 now. The other lane is my cousin in his 94 wrx, didn't even launch and still pull 14 flat bastard lol. Traction control is off, full weight with 3/4 tank.

http://img181.imageshack.us/img181/396/picture001acopytw0.jpg (http://imageshack.us)

The next day i put it on the dyno at a dyno comp at a local shop, bit wierd as its lower than i expected, may be the dyno setup that day. the same wrx got 152kw@14psi at all 4.
Mine...

http://img266.imageshack.us/img266/4706/untitled1ip5.jpg (http://imageshack.us)

[ryan_GTI]

15.4 woah! excellent times for a stocko GTIJNR!

[evorobin]

ha, i ran at calder park last fri as well, stock as a rock and 34 psi in the front tyres lol reaction time lol, 15.4 at 88 mph... i'm ok with that... 4 now. The other lane is my cousin in his 94 wrx, didn't even launch and still pull 14 flat bastard lol. Traction control is off, full weight with 3/4 tank.

http://www.vwwatercooled.com.au/forums/ (http://imageshack.us)

The next day i put it on the dyno at a dyno comp at a local shop, bit wierd as its lower than i expected, may be the dyno setup that day. the same wrx got 152kw@14psi at all 4.
Mine...

http://www.vwwatercooled.com.au/forums/ (http://imageshack.us)

21KW drivetrain loss is excellent. What did you think it should be?

[gtigrl]

ha, i ran at calder park last fri as well, stock as a rock and 34 psi in the front tyres lol reaction time lol, 15.4 at 88 mph... i'm ok with that... 4 now. The other lane is my cousin in his 94 wrx, didn't even launch and still pull 14 flat bastard lol. Traction control is off, full weight with 3/4 tank.

http://www.vwwatercooled.com.au/forums/ (http://imageshack.us)

The next day i put it on the dyno at a dyno comp at a local shop, bit wierd as its lower than i expected, may be the dyno setup that day. the same wrx got 152kw@14psi at all 4.
Mine...

http://www.vwwatercooled.com.au/forums/ (http://imageshack.us)

My other half (blue XR5) said he chatted to you ;) He called me up after and said I should come down and run mine but I was busy j:

[shaneth]

I would have thought 93 would be about right but we all know what dyno's are like you could have taken it down the road 10 minutes after and gotten the 93kw reading. Unfortuneately dynos cant be relied upon 100% for power figures. In fact my Last car which was a 1993 corolla had 86kw@w and weighed in around 1050kg and the best i could do was 15.9 and it had lsd as well. What im getting at is that its all relitive.

[quaddrive]

I just got the temp APR chip and the best I can manage for 0-100 is 6.3-6.4 sec....
also I went to the drags last night..... toooo much wheelspin... even when shortshifting.... ran a 15.1 at 94mph.... but wheel spinning all way thru second gear...lol
any suggestions on launch to reduce wheelspin?

[Glide_GTI]

Any APR's beaten my time yet? :)


Its all about the launch, I got a perfect launch (minus r/t) when I scored this time. The rest I either dumped it too much or was too light on the throttle, or ended up bogging it down.

[DUB 20V]

is that right the car does not pull till about 4000rpm and revs till 7xxx rpm semms real high