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pmoisse
Supreme tranceaddict

Registered: Oct 2001
Location: Amsterdam, NL (formerly Montreal QC)
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| quote: | Originally posted by nchs09
i think rear defusers also came from forumla one.... but werent they later banned because the cars were bottoming out? |
The diffusers were a carry-over from both Can-Am, LeMans and F1, though their current form more closely resembles the early F1 diffusers.
The cars were bottoming out because there was no minimum ride height. At high speeds, the cars would generate enough downforce, combined with certain springrates, to lower the car. Also, through the late 80's and early 90's, the exhausts were routed into the diffuser to put more air through it and in turn generate more downforce. The problem with that was that when the driver went off the throttle under braking, or trailing throttle through a long sweeper, the downforce was reduced all of a sudden due to less exhaust flowing through the diffuser.
"The Chariot Makers" - is a great book by Steve Matchett about the evolution of the F1 car as we know it.
The exhausts were later routed through the sidepods for packaging reasons. It created a shorter exhaust system, eliminated the unpredictable downforce issue, and allowed the bodywork to cling closer to the newer & smaller gearboxes that were coming out.
But, one of the biggest things I miss about F1 is seeing cars screaming through the Monaco tunnel trailing a wake of sparks from the titanium skidpads on the wings & diffuser.
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Mar-24-2007 11:32
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pmoisse
Supreme tranceaddict

Registered: Oct 2001
Location: Amsterdam, NL (formerly Montreal QC)
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Traction Control gets the Axe
I'm warming up to the control ECU concept after hearing this.
from www.f1live.com
The World Motorsport Council met yesterday and the FIA today announced the decisions that were made with regard to the sporting and technical regulations for next season.
The most significant change to the previously published set of rules is that traction control will no longer be permitted.
Article 9.3 of the technical regulations states: ‘No car may be equipped with a system or device which is capable of preventing the driven wheels from spinning under power or of compensating for excessive throttle demand by the driver. Any device or system which notifies the driver of the onset of wheel spin is not permitted.'
Formula One moves to a standardised ECU next year and it now felt that the FIA can effectively police traction control and other driver aids, something that proved difficult with each team running its own ECU and electronic systems. In addition, the FIA ECU must also be used in testing.
With gearboxes sealed and to be used over four Grand Prix weekends, a change of gearbox will incur a five position penalty on the starting grid.
However, the seals can be ‘broken’ under supervision of the FIA in races two, three and four ahead of qualification for inspection and the changing of ratios. Clutches can be changed without penalty.
With regard to engine homologation, there are many ancillary devices such as clutches, alternators, fuel pumps and other devices that are not included in the process.
Other rule changes include the procedure for taking a penalty in the pit lane should the safety car be deployed, changes to the crash test requirements and crash structures, and clarification of the engine change rule regarding a failure before the end of qualifying.
The much-rumoured return to slicks meanwhile is not an option now for 2008 with the Bridgestone Potenza tyres remaining with four 14mm grooves.
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Mar-31-2007 10:07
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