heel&toe racing technique

heel&toe technique with double clutch...
watch it!

Category:

Sports

Tags:

• heelandtoe
• doubleclutch
• racing

[Boogieeeeeeee]

Well of course, FormulaDstock. The car is modified to race. And that includes the whole transmission set

[FormulaDStock]

Wow, he barely needs to push the clutch in to disengage the clutch. When I double clutch, my pedal has to travel over two times more distance than the car in this video.

[HeathwoodStudios]

yeh pretty much!

although i have heard that many dogboxes (crashboxes) can be changed through the gears without using the clutch at all.. just release the throttle a bit and push the stick to change up, and blip the throttle a bit to change down.

but i'm not too sure about that so I won't say much about it lol!

would just confuse you, and myself more probs!

x

[Slidingmy240sx]

lol...okay i get it now...so its used in something like a dog box or a synchro-less gearbox eh?

[HeathwoodStudios]

i suppose if your gearbox will let you do that without knackering itself then it could be done.. this is a pretty common drag racing move isn't it?

although, these are highly tuned race boxes, and it probably either doesn't allow you to do that (cos of no synchro gears in the box), or would just knacker the box over a pretty short period of time so people don't do it just to prolong gearbox life.

but yeh i do see your point, i pull out of gear to neutral without clutch all the time..

[HeathwoodStudios]

double de-clutching isn't really that important, unless your gearbox doesn't have sunchro gears in it (most race boxes dont have them cos they waste bhp), in which case you need to DDC actually engage the new gear you have selected on the downchange.

most people don't realise this 'cos their cars have synchros in the box (including me), and in which case you won't ever have to DDC at all.

but i think you are confused with the heel and toe shifting he is carrying out at the same time.

[HeathwoodStudios]

he's definately pumping the clutch twice for each downchange, but it's pretty subtle.. and the fact that his arm is in the way half the time doesn't help lol.

but he doesn't blip the engine when it's in neutral to get the internal gearbox gears spinning and my understanding of DDC was that you needed to do that, AND then blip the engine again when the clutch is out so that you rev-match the transmission and engine, but maybe i'm wrong..

i spose it depends on the box you have installed..

[HeathwoodStudios]

you seem confused..

heel and toe shifting is to match the engine speed with the gearbox speed so that the rotating parts on both sides of the CLUTCH are at the same speed so the downchange is smooth.

double de-clutching whilst doing that ASWELL is so that the gears inside the gearbox do the same thing. with a gearbox without suynchronizer gears (ie a race box) you need to DDC or you cant push the stick into the lower gear 'cos the gears will mash.

it all depends on the box you have.

[Slidingmy240sx]

you have the sequential gearboxes in the upper GT classes but there is those gearboxes that are your conventional H-gate. but yeah...either way, you're still trying to match the relative engine speed and car speed.

[tcheksrl]

GT cars use a diferent gearbox. In GT cars the gearbox make the job of the driver.