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pksurveyor
04-06-2009, 09:16 PM
YouTube - Caterham Superlight R Full Track Test (http://www.youtube.com/watch?v=80EkNMXl2Ds)

The track is MSR Houston.

yellowss7
04-07-2009, 08:57 AM
Can anyone explain to me what caused him to spin there at the end? Did he brake too late? Go in too hot? Just curious, it seemed to happen very quickly.

Tom

thegoat
04-07-2009, 12:14 PM
Too much brake - rear wheel lock? Haven't driven a Caterham, so pure speculation.

RC45
04-07-2009, 12:57 PM
Hi there folks, glad you are enjoying the video. It was just sitting languishing on my hard drive since 2006, and I figured I may as well lt some other folks enjoy it.

As a non-Caterham bloke I really enjoyed the few weekends that I was allowed access to the Superlight to do the test and filming. I come from the slightly higher HP, slightly heavier Corvette Z06 world, and coming to grips with the Superlight was a task in and of itself.

Funny thing is, the harder I pushed the car, the better the Avons gripped and the more predictable the car became.

So how did I end up spinning out at the entrance to the Bus Stop chicane? It was on a slow down/cool down lap actually, after aout 10 or 12 really good laps and instead of being all "in the zone' and hard on the brakes coming up the 90* right and balancing the car on the brakes and the throttle and turning in and holding ready for the 90* left after coming up after that"......

I let my mind wander for a 1/10th of a second and since I was slowing down my mind raced ahead to how I would describe the car in words and I thought "Wow - this car turns as if by mind control, what a perfectly balanced.... WHOOOOAAAAAA NELLY!!!!!!!"

:)

p.s.

This is what I am normally wrestling around MSR.

YouTube - CamZilla Time Attack (http://www.youtube.com/watch?v=fands5rSgl8)

pksurveyor
04-07-2009, 01:54 PM
RC45 - Great video. James' Superlight is a very quick car and you handled it very well.

yellowss7
04-07-2009, 02:01 PM
Thanks for the explanation. I'm anticipating my first track day experience and was curious as to what would cause the car to step out like that. What tire pressures did you run. Were the Avon's CR500's or ACB 10's?

Tom

RC45
04-07-2009, 02:50 PM
RC45 - Great video. James' Superlight is a very quick car and you handled it very well.

Thanks for the kind words - and yes his car is right quick and I didn't really do the car justice, the previous day James put in a couple 1m45s laps, so there is at least another 10s in the car even on the old MSR layout.

I was just glad to have the opportunity to experience one of most thrilling cars I have ever driven. It is the 4 wheel equivalent of a motorcycle blast down a country lane. Wind buffeting your head about, bugs and stones hitting your neck and arms, the noise and spectacle. I am really glad I had the chance to drive it, and I think many "hp car" guys mistakenly dismiss the Caterhams without even giving them a second glance.

Paul


Thanks for the explanation. I'm anticipating my first track day experience and was curious as to what would cause the car to step out like that. What tire pressures did you run. Were the Avon's CR500's or ACB 10's?

Tom

I approach that particular corner contrary to the way many folks do, and instead of swinging wide left then swooping ver to the right I round the left sweeper and stay well right and take a straight shot towards the chicane entrance so I can be hard on the brakes in a straight line - this unloads the rear end quite a bit, and the entrance to that chicane as a nasty offcamer job, so if you lose concentration the way I did and are a little slow on your transition from braking to power the car just goes straight for the "go directly to off throttle oversteer do not pass go" side of the handling equation.

Under normal hotlap conditions (even in my Corvette) I am anticpating this and know that I am on the knife edge of oversteer each and everytime I come into that corner - but all it takes is that timiest of split second loss of concentration and arond she comes.

I mist say I noticed the Caterham to be a little less forgiving than even my car in situaitons like this, but rather than fault the car, I would rather say thats what makes the Caterham so exciting to drive :)

As far as the tyre pressures, I do not recall what we set them to - but I seem to remember letting them down to a cold pressure of around 28psi at one stage.

I also went back and checked some photos. The car was sporting Yokohama's back then, not Avons.

Paul

yellowss7
04-07-2009, 04:10 PM
As far as the tyre pressures, I do not recall what we set them to - but I seem to remember letting them down to a cold pressure of around 28psi at one stage.

I also went back and checked some photos. The car was sporting Yokohama's back then, not Avons.

Paul

Thanks for the responses Paul. I don't have any experience with the Yoko's but 28 psi cold sounds pretty high. I run my Avon's at 18 psi cold.

If you were running at 28 psi cold, then see if you can get a do over as I'm sure you'll find the grip even better at the lower psi.

Tom

MoPho
04-07-2009, 04:41 PM
BTW, James sold this car back in 2007.

pksurveyor
04-07-2009, 05:08 PM
Here is a picture of James and his Superlight sitting in the grass at Lotus Owners of South Texas (LOST) track day in the Houston Police Academy track.

RC45
04-07-2009, 05:18 PM
Here is a picture of James and his Superlight sitting in the grass at Lotus Owners of South Texas (LOST) track day in the Houston Police Academy track.

Now I don't feel quite so bad for having it creep up on me and bite me on the ankle like that ;) hehe