Sunday, June 18, 2006

Sepang International Circuit

Here's the map from the Sepang website:



Its length is 5.542 km, spread over 15 turns.

The track is run only in clockwise configuration, except for drag races.

The longest straight is 927.543 meters and leads onto T1, a constant radius turn leading into T2, a tight kink. T3 is a sweeper into T4, a right-hander on an incline. This is where newbies on cold tires and an impatience to get on throttle are usually caught off-guard and run into the gravel.

T5 and T6 are the most dangerous parts of the circuit. It's a common mistake to unsettle the car's balance through improper brake or throttle application. Go into T5 too hot, and the car might oversteer. If you make it through but still carry too much speed, you'll have to take T6 while running wide, totally missing the apex. On the other hand, apexing too early on T6 will lead to understeer on corner exit, sometimes with disastrous results.

T7 and T8 are the bus stop corners. Proper threshold and trail braking allows the car to cruise through with the steering wheel fixed on an angle. Taken in 4th.

T9 is a sharp hairpin on a downslope so braking has to be hard and early. Normally taken in 3rd gear with a late turn-in. Corner exit is on an incline and here 4WD and RWD vehicles prove their worth. FWD vehicles may have torque steer, so if you're driving a FWD, roll on the throttle instead of mashing it.

T10... nothing fantastic, just take the classic racing line. T11 is another deceptive corner... turn in late to avoid surprises.

T12 is on a downslope. Again, braking balance is critical to avoid unsettling the car. If T12 was taken correctly, T13 can simply be tackled as a straight line. T14 is critical... blowing it means low corner exit speed onto the back straight. That would suck. T15... too many people think that corner entry speed is everything. Don't do it.

A back of the envelope guide to lap timings:

VehicleLap time
04 Formula 11'31"
JGTC GT5001'52"
MotoGP2'01"
Porsche GT3 (pro driver)2'27"
Evo 8 (very heavy mods)2'28"
Merdeka Millenium Endurance 04 STi2'32"
Evo 7/8/MR12'3x"
Stock Evo 7 (pro driver)2'37"
Evo 9/9MR (basic mods)22'3x"
Evo 7/8/MR (basic mods)22'4x"
Me32'36"xxx
Me42'40"
Me52'41"
DEu62'46"
Evo 7/8/MR (track newbie)2'5x"

1any multiple combination of upgraded ECU, coilovers, sway bars, tires, brakes, cams, turbo etc
AND lots of seat time.
2intake/exhaust, boost controller, stock turbo, fuel computer
3as 16 Jun 06, worn A048s. 2'37"xxx on 14 Oct 05, damp track.
4as of 29 Jul 05
5as of 1 Apr 05
6as of 10 Jun 05, with brake problems, cat, fuelling issues, AD07.


Transponded times:


DateLap timeEvent
Remarks
16 Jun 062'36"xxxPrivate track day Worn A048. 1.1 bar boost, -3 deg spark advance

2'41"xxx
DEu. Very early retirement :(
10 Feb 06
2'37"174
BMWSG


2'37"535



2'38"127



2'43"631

DEu

2'44"017

DEu




21 Jan 06
2'42"154
Traction Circle ClubWorn RE070

2'43"449



Link to Sepang International Circuit website

2 comments:

Anonymous said...

sianz... I have what you term as "basic" mods.... still have to go low 2'40"s.... I still trying to break 2'45"

Dan DA man

crufty said...

That's cos you have brake issues... have you looked into your 4th gear problem as well?