Wakefield Park NSW Club Class Records

Hjt · Postby **Hjt** » Wed Aug 01, 2012 5:52 pm

Not to pick, but Deen did a high 1.12 in his modified nb8a its on the club website

Guran · Postby **Guran** » Wed Aug 01, 2012 5:57 pm

BTW, Luke's new std NC record deserves special recognition. This is only the second or third time he's dríven the car on the track, and it still has the original Michelin tyres it was delivered with in 2007 (I imagine they're finished off now!). Stock seat and lap-sash seatbelt too (no race-seat or harness). Previously, the fastest std NC time I was aware of was 1:14.10 by Warren Luff (Aug 2009 issue). Luke's 1:13.78 is an amazing effort. Well done!

Hjt wrote:Not to pick, but Deen did a high 1.12 in his modified nb8a its on the club website

True, but that's slower than Andrew's modified NB8A record of 1:10.75. :wink:

Hjt · Postby **Hjt** » Wed Aug 01, 2012 6:13 pm

Misread sorry. Makes you think where the line is drawn on registered and.non.
Esp since a registed car can be gutted like a car race...

marcusus · Postby **marcusus** » Wed Aug 01, 2012 7:56 pm

What are all these new 'clubman' classes? Are they just the new names for the stock class?

That stock NA6 time is amazing! 1:15:80 is so quick!

Guran · Postby **Guran** » Wed Aug 01, 2012 11:14 pm

Thanks Marcus. Clubman class has been adopted from the Victorian MX-5 Club. It allows limited mods for NAs and NBs with the aim of levelling their performance and creating a competitive class. More mods for NA6s, no mods for 10AEs. That sort of thing. Check the Vic motorsport rules for the details.

marcusus · Postby **marcusus** » Thu Aug 02, 2012 12:09 am

Makes sense. I do remember when I was doing Wakefield that there was a bit of contention with I think Ian Vickers running a BD bar in his otherwise stock NB8A. At least I think it was Ian... it's been a while

Guran · Postby **Guran** » Thu Aug 02, 2012 12:51 am

Rollbars, race seat and harness are all allowed safety modifications in the standard classes. I've had them all in my car virtually since day one.

marcusus · Postby **marcusus** » Thu Aug 02, 2012 1:54 am

Really? Wow... I don't remember reading that. Not that it matters really, as I was already well into the modified class. I just thought that the stock class was only the most minor mods (eg race seat, harness), whereas I thought a rollbar would constitute a major mod.

Guran · Postby **Guran** » Thu Aug 02, 2012 8:11 am

The reasoning with rollbars is that they add about 25kg at a high point in the car which would increase laptimes, and this offsets the gains you get from chassis stiffening. To be honest I've never tested this theory as it's too much hassle to remove and reinstall the rollbar during a trackday. But of course the main reason is that it improves rollover safety.

marcusus · Postby **marcusus** » Thu Aug 02, 2012 7:59 pm

Guran wrote:The reasoning with rollbars is that they add about 25kg at a high point in the car which would increase laptimes, and this offsets the gains you get from chassis stiffening. To be honest I've never tested this theory as it's too much hassle to remove and reinstall the rollbar during a trackday. But of course the main reason is that it improves rollover safety.

Very true. I certainly wouldn't bother removing it then putting it back on during a day.

mitch_f1 · Postby **mitch_f1** » Thu Aug 02, 2012 8:02 pm

Please do correct me if I am wrong, but doesn't Tony Williams' car have almost 100kW? Althought I just noticed that it doesn't matter on this page, as it doesn't have the power restrictions in classes as on the MX5 Club NSW page??

PeterB · Postby **PeterB** » Thu Aug 02, 2012 8:45 pm

The records are for NA6s complying with CAMS type 2A regulations, which does not have the power limit applied for the MX5 trackday class. Tony's car fits within 2A for state supersprints, but has been excluded from class 5M as it exceeds 85kw.

Maybe the new 5M is another category to record ? Mitch's 1.13.6 is the quickest 5M time since the new class was introduced.

mitch_f1 · Postby **mitch_f1** » Thu Aug 02, 2012 8:50 pm

Nah that's cool, was just interested to know. Makes sense

Hellmun · Postby **Hellmun** » Thu Aug 02, 2012 9:23 pm

Hjt wrote:Misread sorry. Makes you think where the line is drawn on registered and.non.
Esp since a registed car can be gutted like a car race...

Andrews car is both road registered and daily dríven, it also has nearly 200,000km's on it now. Plus it is dríven to every event and then back home after. So very much was a registered class car until the new motor was installed (and only then because he's increased the comp ratio, everything else is still legal). Remember both me and Andrew built our cars to compete at supersprints against lotuses and other high powered VTEC honda's in class 2B where they needed all the help they could get within the regs to be competitive in that class. It's fun when your in a class where doing EVERY mod to your engine possible still puts it below the stock power of other cars in class. So yeah we did everything possible to go as fast as possible legally within the regs, Deens car is not near that limit, he doesn't even have extractors or NB8B brakes yet IIRC and both should put him incredibly close to Andrews time as-is. As Peter said this thread represents Supersprints or Clubdays... within SS regs you could build an NB8A motor with 100kw+...

Mitch - Tony Williams car has about 90kw according to the Dyno he ran it on but even then I think that was optimistic, it had cams though which gave it a great meaty torque curve but it still only revved to 7500rpm. I drove it (did a 1:12:99 I think?) and it didn't feel crazy powerful and while I could never overtake him on the straights at super sprints in my own car...my NB is over a 100kg heavier than his NA and there wasn't much in them at all (for reference my car level pegs with an NC if it's only got extractors and no other mods). He has a very well setup car though, brakes/suspension were spot on, absolutely easy to drive fast. Pretty sure I have video from that exact clubday overtaking it in the morning which shows it didn't have a crazy motor. As you said though these were all created without class power limits.

I haven't look at this thread in a while but funnily now that I look at it I think my car was still eligable for the road rego class as it only had 90kw exactly but because Mike put me in race class then the 1:10:06 I did last year would now be the race class NB8B record now? Funny to go faster in the restricted class than the open one....

On the flip side the 2C supersprint class has more restrictions than the club category does, club is just road registered turbo cars except for stock SE's.

3.11 On turbocharged vehicles, no modifications are permitted to the induction
system or any components associated with its functioning. Maximum inlet
pressure must remain in accordance with the manufacturer's specifications
for the vehicle. No EMS Modifications are permitted on turbocharged
vehicles.

Which would be impossible for an NC to adhere to at all being that there are no factory F/I versions and I doubt all those other cars don't have any after market management, run standard boost or have no induction system changes. So the system which is the least restrictive is what's being adhered to so it's pretty loose.