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Showing posts with label Trackday/Circuit. Show all posts
Showing posts with label Trackday/Circuit. Show all posts

Wednesday, September 10, 2008

Kampung Gajah Open Trackday - 07 September 2008


The Cari Touge Club of the Chinese Cari forum has organised this open trackday at the Dato' Sagor Circuit located at Kampung Gajah, Perak. It's a mini circuit which is about a kilometer long, with twisty bends and short straights which mainly cater for grassroot motorsports events.

I've been to the circuit a few times for events and drivers' training, but never have I drifted there all this long. Having inadequate practice and testing with the Hiper DCM Silvia since its last upgrade, I decided to give it a go, at the mean time meeting up with a few old buddies from the Chinese Cari forum.

7am Sunday morning, we set off to Kampung Gajah in 2 cars, with the Caldina carrying the tyres and all necessary spares. It took us about 2 hours to cover the 200km journey to the destination.


The trackday was basically a free run session with a time trial and mini race later in the afternoon. As there were not much cars on the track, I got plenty of time to test out different lines and setting, and also getting myself acquainted to the power of the current setup.

I must say, drifting in this circuit is very addictive. The 3 linking high speed turn on the opposite side of the grandstand is really challenging. First of all, the entry is moderately fast and you need to get a good angle on the entry in order to tackle the 2nd corner with a correct line. The transition point is also crucial. You’ll be grazing the grasses (yupe the run-off areas are basically grasses) if it’s too early or too late. A 4.3 final drive for the Silvia will definitely benefit here as with the 4.1, there’s a slight bog down on the 1st transition, and you’ll need to downshift for the final turn.


I met a few drifters there, some of which I took them for a ride and share some tips with them. The boys from the Cari Touge Club are a bunch of motorsports fanatics. I spent most of my time taking them as passengers and swirling around topics related to cars and motorsports. Hopefully this in some ways motivated them.

After the free run session, I decided to head back home early. Before I left, the organizers have decided to put me into the time trial session! Not wanting to disappoint them, I went for it. With the 255 Direzzas worn right up to the TWI at the rears, the car was struggling for traction. Once the power kicked in, the rear wheels were spinning on 1st, 2nd and 3rd gear. The recorded time, however, was 55 seconds. Power do play a part here, but there is much more room for improvement still.

Here's a short clip recorded by one of the member:


Photo credits to Jamie Oh and Alvan Yap

Monday, July 28, 2008

Sepang Open Trackday



It has been a while since I last went to an open track day in the Hiper DCM Silvia.

The previous time it went for a full circuit drive was back in 2006. Back then, it had the GT-SS turbo setup, R32gts-t 4 pot brakes, no means of downforce, and on drift setting of course which made it very very tail-happy. Despite some drawbacks, it clocked a 2'36 on a hot lap, and it made me realised the potential of the car as a time-attack machine.

Some changes were made to the V2 as compared to V1 in 2006:
- HKS GT2835R Turbo
- Dunlop DZ101 225/45/17 Front, 255/45/17 Rear
- R33GTR Brembo Caliper Front with Endless SSS pads
- SARD Pro Drift GT Wing, adjusted to maximum low

The power has increased tremendously compared to the previous setup. On the main straight, it clocked 220km/h on 1.2bar boost and street mapping. The race mapping allows 1.6bar boost which I presume will bring the top speed about 10km/h higher.

The DZ101, despite being a street tyre, are surprisingly excellent under threshold braking. The Brembos can definitely brake harder compared to the Nissan 4-pot, but the front are showing no signs of lock-up. The rear, however, will lock-up under very hard braking on the back straights and main straights. This is caused by the new brake setup which shifted the bias to the rear. The car still braked in a straight line though, just that with an extra puff of smokes.



Although the turn in response of the DZ101 was not knife-edged sharp, it was sufficient to steer the car into the proper cornering line. Smooth and precise steering input will make the tyre turn better rather than harsh and rapid adjustments. With the wider rear tyres and a GT wing, the car is less tail happy. On the high speed corners, throttle can be applied earlier without having to worry about oversteer. However, a slight understeer was present, especially coming out of the fast corners, which is probably due to too much rear downforce, causing the front to lift.

The day ended with some rubber burning down turn 5 and 6, and an overboost problem on the way back to pits during the last lap.

Photos courtesy of Sheikh @ www.evolusiotomobil.com.my