Tehnici de pilotaj

"Double Clutching

First of all let's deal with the "double declutching " issue. This is really only the British term for 'double clutching' and makes reference in some way I suppose, to the fact that it is usually a downshifting maneuver in disengaging the clutch. The first stage in a full 'heel and toe' gear change is the simple use of double clutching. On its own this is a fairly simple little dance of the toes and it goes like this:

1. You are driving along in your TR, MG or whatever in third gear for example, approaching a corner and preparing to shift to second. You brake with the left edge of the ball of your right foot as usual.

2. Depressing the clutch with your left foot the shift lever passes through neutral as this happens you release the clutch pedal out again half way, thus setting the mechanics of the clutch assembly in motion again.

3. Then fully depress the clutch to complete your shift into second.

That my friends is a double declutching. It might sound odd in print but is quite simple in action. Practice it in the driveway, with the engine off so you don't hit anything. The aim is to keep the engine and the clutch plates turning at the same speed for the moment when they engage themselves. Your car will thank you especially if you have an older vehicle that lacks effective synchromesh.

Heal and Toe

The next step is a true "Heel and Toe". Naturally it goes without saying that this does not really involve your heel and toe! The name is just to make it harder to understand! (Actually it stems from a rather odd set up in the old Ferraris where the clutch and the brake pedals were switched-but that's another matter.) The technique involves combining the double clutch method with a second technique that keeps the engine RPM at a level to match the next gear to be engaged.

Everyone has had the experience of changing down into a lower gear and having the engine forced into screaming high revolutions. The other thing that happens is that the weight of the car suddenly shifts forward due to the 'engine braking effect'. If you happen to be going into a corner this can be enough to lighten the rear end and send the tail out on a visit to the front end! Here's where the heel and toe technique comes in. Unless you have a third leg you have to brake and 'blip' the gas with your right foot. The tricky part is timing it all right and keeping the brake pressure steady while you do the 'blipping'. A note of warning here. If you practice this in your driveway as I suggested for double clutching, some of the newer cars will flood as a result of the gas pedal movement (yes! even without the engine running). So if this happens just go off and have a cup of tea and let things settle for a while before heading off to try it in motion. Here we go:

1. Begin the downshift as before, using the left edge of the right foot to brake. Depress the clutch and shift into neutral.

2. Now, as you're half releasing the clutch, swing (or rock) the right edge and heel of your brake foot over onto the gas pedal and squeeze it gently to bring up the engine RPM. With experience you'll get to know how much is enough.

3. Then depress the clutch and complete the shift into second. The plates should have been spinning from your double clutching and the engine RPM, which dropped while you were shifting, was brought back up to the level needed by the next gear ratio. Everything just slipped together without a murmur, and there was no forward weight shift or unwanted acceleration of the car. Swing your right foot fully on to the gas, and you're off down the straight.

Confused? I was too, and I "sort of know" how to do it. Actually the brain is not capable of doing this at all-the method has to leave the area of your brain and become a fluid physical skill. You drive along and your hands and feet do it all, without you really being aware of it; it's a great technique to master!"

Sursa: http://www.triumphspitfire.com/healtoe.html

ai facut la palatul pionierilor? nea tomita parca era... in fine.
teorie se face, mai ales daca vrei cu adevarat sa inveti sa pilotezi. poti avea 99,99% talent - asta inseamna "sa simti masina" - si sa iesi pe doi sau sa dai coltul.
primul lucru pe care trebuie sa-l inveti e mecanica, sa stii ce face fiecare componenta din masina ta si la ce serveste ea. pe linga asta mai ai fizica.
formula 1 de exemplu este ca un ceas elveian: schimbi viteza o zecime mai tirziu, pierzi 50 de zecimi in turul ala... la fel si kartingul si tot ce implica circuitul.
in raliu tehnica de pilotaj e alta, pentru ca rulezi pe alte suprafete, cu alta aderenta, alte suspensii etc.
primul lucru pe care trebuie sa-l inveti este sa frinezi cu stingul. nu incerca asta pe strada ca te pupa toti in fund!!!!!!!!!!! garantat!!!!!
glisada e printre ultimele pe care le inveti pentru ca poti sa te dai peste cap instant!!!!!!! dejantezi si s-a terminat. iar, difera mult tehnica de pe asfalt fata de cea de pe macadam.

Stie cineva la ce foloseste frana cu piciorul stang..?? ca am auzit ca o folosesc pilotii de raliuri..

Franarea cu piciorul stang este folosita de pilotii de raliuri cu muuult antrenament si nu face decat sa schimbe raportul de mase intre cele 2 punti fara a scadea turatia la motor. Mai exact!
Un sofer normal inainte de a intra intr-o curba franeaza cu piciorul drept, fata se inclina(centrul de greutate se muta in fata) => aderenta pe fata si negociaza corect curba
Un pilot profesionist inainte de a intra intr-o curba atinge usor cu piciorul stang pedala de frana si se petrece ce am scris mai sus dar in acelasi timp tine piciorul drept pe accerelatie si deci are mai multa putere si mai repede la iesirea din curba :angel:

Eu am incercat si nu mi-a iesit

incearca varf-calcai si lasa prostiile cu stangu
ala e doar pt ambreiaj sau pentru tinut de pomana.
vrei sa mergi mai repede pe viraje, foloseste piciorul drept pe frana si acceleratie concomitent.
stangu pe frana poate insemna dinti rupti, arcada sparta sau coliziune cu alt vehicul/pom/om. nu incercati stangu pe frana pe drumuri publice!!!!

LE. cand aveti licenta de pilot raliuri sau o vasta experienta si antrenament/practica, puteti folosi stangul pe frana. pana atunci vedeti mai sus.

guerilla nu te-am inteles.. cum sa tii picioru drept pe frana si acceleratie concomitent????

uite asa ca in imaginea de mai jos.


sper ca ai inteles sfatul cu stangu pe frana
modul in care piciorul stang este invatat sa apese pe pedala de ambreiaj, poate fi extrem de brutal pentru frana.

am inteles acum... dar nu cred ca poate nimeni sa faca ce zici tu.
adica se poate de fapt dar nu ai eficienta ca nu poti controla pedalele simultan (adica sa fie si franarea eficienta si accelerarea)
ai incercat asa ceva vreodata???
si o intrebare offtopic: De ce nu-mi apare poza?? ca i-am dat browse acolo si-am pus una

da, am incercat, merge destul de bine. mai greu la inceput, reusita depinzand si de marimea piciorului si de distanta dintre pedale.

off topic - poza tre sa aiba maxim 100kb, 400x400. extensie gif, jpg sau jpeg.

Da, dar pentru ce zici tu aici Guerilla iti trebuie o distanta minima intre pedale, distanta pe care o gasesti mai greu la masinile de strada Mai ales ca sunt destui care isi schimba pedalele si isi pun unele duble ca suprafata si raman 2 cm intre frana si gaz :bash:

Deci.... atentie mare la distanta dintre pedale si marimea piciorului

cind mergem la o tura pe AMC?

Te lasa si cu titiu? Are loc?
Ah! Sa nu uit! ce am scris mai sus impreuna cu Guerilla se aplica in special la FWD! Nu se recomanda la automobilele cu RWD, fuge spatele

pai daca intri tu cu toyota ta pe AMC se duce naibii asfaltul alora

ne dam cu karturile, 60 de lei 10 minute. si e suficient, hai maxim 20 de minute. va anunt de pe acum ca sint lent rau de tot
si la Sugativa mea am de lucru gramada, pina sa iasa pe sosea. da' promit sa va plimb pe toti odata

http://www.youtube.com/watch?v=n7JQvCEOHXo...ted&search=
Uitati-va la asta Ati incercat intoarcerea la 360 de grade???

Mie imi iese dar numai la 215-235 de grade si numai pe zapada Cine ar incerca asa ceva cu masina lui? Eu nu!

Cu FWD 180 de grade pe zapada e simplu, mai incolo intervine tehnica si conditiile in care se executa manevra

cu Lada am facut de cel putin 10 ori 180 grade cu frana de mana pe asfalt si piatra cubica
si de cateva ori pe zapada, dar acolo e chiar prea simplu
si iar pe zapada peste 360 grade cu acceleratia
pe asfalt doar vreo 90 grade cu acceleratia, caci chinui rau de tot calutii si cauciucurile, de fapt pe un asfalt foarte aderent nici nu cred ca poate 360 din acceleratie, doar sa fii criminal :bandit:
power-slide pe asfalt cu noroi, cand a inceput "din intamplare" si a continuat "de placere"

pt cine vrea sa vada driftinguri si varf calcai sa caute Drift Bible pe dc. sau sa cumpere cd original 16 euro ... e foarte tare dar doar pt RWD-uri. Din ce am aflat 360 e imposibil cu fwd in conditii de aderenta normale.

cu frina de mina faci si cu fata, dar trebuie suplimentat cu accelerare si volan. cu rwd e mai simplu. cu o masina usoara de spate faci si creculete cu un fwd