Double clutching ?
Discussion
I believe you're referring to double-declutching, which involves going via neutral and bringing the clutch up briefly to get the gears spinning at the correct speed before selecting the next gear. This is mainly used when changing down on older vehicles which don't have syncromesh(sp?), or when the syncromesh is getting a little tired.
I'm sure there are others who can give an expanded and much improved version of this...
I'm sure there are others who can give an expanded and much improved version of this...
Quite a good explaination at www.s2ki.com/faqs/showfaq.php?s=&threadid=19041
tvradict
That's what heel-and-toeing is. The difference is, when driving a non-syncro box where double declutching is necessary, just to get into the gear, you normally take your right foot off the brake to blip the throttle (on a change down). Whereas with h-and-t ing, you blip the throttle at the same time as braking.
That's what heel-and-toeing is. The difference is, when driving a non-syncro box where double declutching is necessary, just to get into the gear, you normally take your right foot off the brake to blip the throttle (on a change down). Whereas with h-and-t ing, you blip the throttle at the same time as braking.
quote:
I believe you're referring to double-declutching, which involves going via neutral and bringing the clutch up briefly to get the gears spinning at the correct speed before selecting the next gear. This is mainly used when changing down on older vehicles which don't have syncromesh(sp?), or when the syncromesh is getting a little tired.
I'm sure there are others who can give an expanded and much improved version of this...
Sounds good too
quote:
I believe you're referring to double-declutching, which involves going via neutral and bringing the clutch up briefly to get the gears spinning at the correct speed before selecting the next gear. This is mainly used when changing down on older vehicles which don't have syncromesh(sp?), or when the syncromesh is getting a little tired.
I'm sure there are others who can give an expanded and much improved version of this...
Yes, it is a technique to match gearbox revs to the new gear. With a modern box in good condition it should be unnecessary. If you have an older or knackered box without synchro you may need this technique when changing down.
Heel-n-toe is completely different and is about matching *engine* speed to the new gear when you change down, to avoid sudden engine braking when you engage the clutch. This should be regarded as an essential technique for V8 TVRs.
>> Edited by GreenV8s on Wednesday 27th March 17:53
quote:
I heel-toe all the time
Is that all the way to your nice flat in Paris ??
quote:
it's much smoother than the snatch you get otherwise
Mate if the snatch you got by heal and toeing made you flog the Griff buy a parisian love nest and drive around in a clio I'll give it a miss
quote:
you can set the pedals up especially for it
what in a clio???
quote:
...surely this is a must with TVR's and other high performance cars?
Well I guess those days have gone now!
>> Edited by mel on Wednesday 27th March 18:13
Simple explanation at www.triumphspitfire.com/Healtoe.html
more accurate one at www.urs4.com/technical/miscellaneous/Igor.html!
>> Edited by philshort on Thursday 28th March 22:52
more accurate one at www.urs4.com/technical/miscellaneous/Igor.html!
>> Edited by philshort on Thursday 28th March 22:52
MonAmiMate
I am reminded of the story about a hack who repeatedly rubbished "plastic" cars in the press. He was invited to the factory, where he was treated to an impressive demonstration of the strength of the bodywork involving a hammer and a TVR. The hammer bounced off leaving no damage. "Right, where's your car then?". Apparently he never rubbished TVR's again.
Maybe an urban myth?
Whatever, having seen a Cerbera lose it big style at Siverstone and ram the concrete wall at what must have been close to a three figure speed, I have to say I have no doubts about the strength and integrity of TVR's. Fibreglass absorbs a tremendous amount of energy when delaminating, more I think than does metal deformation.
Trust me, it would take something like a howitzer to reduce a TVR body to anything like plastic knives and forks!
>> Edited by philshort on Thursday 28th March 23:03
I am reminded of the story about a hack who repeatedly rubbished "plastic" cars in the press. He was invited to the factory, where he was treated to an impressive demonstration of the strength of the bodywork involving a hammer and a TVR. The hammer bounced off leaving no damage. "Right, where's your car then?". Apparently he never rubbished TVR's again.
Maybe an urban myth?
Whatever, having seen a Cerbera lose it big style at Siverstone and ram the concrete wall at what must have been close to a three figure speed, I have to say I have no doubts about the strength and integrity of TVR's. Fibreglass absorbs a tremendous amount of energy when delaminating, more I think than does metal deformation.
Trust me, it would take something like a howitzer to reduce a TVR body to anything like plastic knives and forks!
>> Edited by philshort on Thursday 28th March 23:03
Gassing Station | General Gassing [Archive] | Top of Page | What's New | My Stuff