Top Speeds

[Adam]

Found it...

  Quote

Peter’s troops aren’t naïve about what can happen at very high speed, but they can’t be expected to know everything. The stuff they have thought of is the stuff I needed them to think of. There’s no way, for example, you’d try this on stock Falcon brakes, so four-piston APs are reassuring.

So it’s one last fiddle to temporarily disable the standard 230km/h limiter and blaze, quickly, before the computer figures out it’s been diddled.

As engines go, this is strong. Bloody strong. So strong that the sweeper onto the runway is best taken, delicately in third. Into fourth and the thing’s huffing and howling.

Falcons normally stall in fifth. Not this one. It just keeps surging. But then the air starts to play around the nose at, maybe, 260. Hard to know, with the speedo non-functional.

A bit faster and it starts to move all over the track. It’s getting to be seriously hard work with the tacho needle j-u-s-t off the limiter, maybe 30 revs shy. The engine’s not the problem, it’s the aero. Avalon’s airstrip is wide enough to land jumbos, but I doubt any of them ever uses this much width. It’s just walking the nose across the road and back again, sometimes sharply.

And then it’s over and through the trap. The aero is, if anything, worse under brakes. While moving off the throttle and onto the brake pedal, the thing steps a good three car widths sideways, then another three as the nose pitches. From there, it’s junking left, then right, and then back again until, around 230 or so, it all becomes fairly benign.

It took a lot of road to stop, probably because I hadn’t appreciated exactly how fast it was travelling. And it was travelling bloody fast, 307km/h didn’t seem right when it came over the radio, but in, hindsight, with the way it moved around, it kinda made sense. And I’m, not real sure I want to do it again.

Make's you wonder what one with the T56 would of got with the right diff ratio.

[Guest xr6t300]

230 in the T and backed off so me mate in his 05 XR8 could catch up

220 in the Phoon no drama's but cars were coming up fast so had to back off no doubt we'll give it another crack some time.

[G6ET8U]

  Quote

Make's you wonder what one with the T56 would of got with the right diff ratio.

Adam...

245kph in 5th with more revs and a full gear to go... and stable as anything and still pulling like a freight train!

3.46 ratio... so I can only imagine it would be an easy 300 and something.

Jack

[Lumpen]

  Adam said:

Found it...

Make's you wonder what one with the T56 would of got with the right diff ratio.

←

Or something like Brians? Salt Flat's here we come

I think you would need a modified kit, a less severe supercar one maybe?

Lumpy

[chrisxr8]

235 in 5th one to go basically stocko thought it was rev limit but looked down to see no where near red line.

[youngy]

  Chooka said:

300+ on the R1

Speedo only reads 299 then stops but the rev's kept going around, estimate probably another 30kmh

Chooka

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ditto to that but on my zx10. New litre bikes rule when it comes to speed

[IH8TOADS]

Fastest ive been was 240...... but was in youngys car . Mine doesnt make that

[Revved]

well the ss ute I went against was limited to 220 or so, I passed him waving! on a private road that is owned by a friend of mine!

[PumpedUp]

I have only ever done 110 KPH.

I was however, a passenger in my car while the WOG took it out on a test drive down the street... OMG!

[replicant]

Aero instability... there are probably easier options than lowering the car. A larger front splitter ie one that doesn't have to go over a kerb or driveway or some underbody aerobits like extending the cover under the engine aft of the front axle line... as well as a couple of deflectors in front of each of the wheels.

The other issue from an aero point of view is how the air flow separates just aft of the cab and over the tray. Looking at it, this is going to cause some lift just thinking about how the laminar flow will start developing vorticies where it separates from the roofline just aft of where the roof ends...