UK & Ireland S2000 Community Discussions related to the S2000, its ownership and enthusiasm for it in the UK and Ireland. Including FAQs, and technical questions.

Double De-Clutch

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Old Apr 27, 2005 | 02:22 AM
  #21  
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From: Brissssol
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Originally Posted by Nick Graves,Apr 27 2005, 10:44 AM
That comment about H&T the IAM is probably true in an idealised, happy world of 1950s motoring
Why does this only apply to 1950s motoring? No biggie, just wondered why you thought this?

H&T allows you to rev match whilst braking, and of course that is your choice to do this.

Most IAM observers can drive very quickly and still use the IAM system, you would just find that they do it in a different way to you and rely less on outright acceleration and speed to do this but just keeping a higher average speed.

IAM just propose that over lapping braking and gear change is not needed for day to day driving. I manage to drive every day and make progress and drive quickly (but legally and safely) without H&T. If I use H&T then I am pushing that bit harder, but this is rare. But then that is my choice.

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Old Apr 27, 2005 | 02:37 AM
  #22  
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From: Hatfield
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It's all about observation and planning so making your driving smoother. Oh and because you brake less frequently you save on fuel. Thats one reason why they teach it for fleet drivers.
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Old Apr 27, 2005 | 02:52 AM
  #23  
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From: SE VTecville
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Originally Posted by Nick Graves,Apr 27 2005, 09:44 AM
San,

Think of a DDC as H&T without using the brake pedal as a pivot. I think the Septics call it rev-matching.

That comment about H&T the IAM is probably true in an idealised, happy world of 1950s motoring, which is why I've always shied away (or overtaken!) the IAM.
Cheers Nick.

But I was just clarifying that double DECLUTCHING and double CLUTCHING were one and the same thing as on the 'howthingswork' site, they refer to double clutching only.

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Old Apr 27, 2005 | 08:50 AM
  #24  
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From: Hertford
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Ah, I see.

That's like stick shift, fender, dubs and scullions.

Bloody Septics. They drive on the pavement, you know.
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Old Apr 27, 2005 | 11:30 AM
  #25  
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From: Brissssol
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Old Apr 27, 2005 | 12:43 PM
  #26  
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AFAIK Heel and toe is used when pushing hard on track/road where it is important to keep the balance of the car just before a corner but be in the right gear for the exit.
The idea being that if you do not heel and toe then as the new gear is engaged the weight of the car can move to the front of the car making the back end lighter as in lift off oversteer. If you are on the brakes at this point (as you would be before a corner) then the rear brakes can lock up....not good.

seem to remember Goodwin in Autocar touched on this a few months ago.

Cheers

Rob
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