double clutching?

[iqaruzz]

mag tatanong lang po.

papaano po ba ang double clutching? hanggang ngayon di ko pa maintindihan kung bakit ka mag do-double clutch kapag nagre-race ka. at para saan pa?

madalas ko lang madinig ito sa mga usapan eh.

[jim]

sir double-clutching or "double de-clutching" is used when downshifting. Pag galing ka sa high gear when racing then suddenly you need to decrease speed and downshift.

To double-clutch during a downshift, perform the following steps: (galing sa web)
Let off the throttle, press in the clutch, and shift the "stick" to neutral.
Let out the clutch.
Bump the throttle to make the engine "blip". Press in the accelerator all the way to the floor for a fraction of a second.
Press in the clutch.
As the engine speed decreases to match the transmission speed, throw the stick into the next lower gear. Since you actively "matched the revs", it should fall right in!
Let out the clutch.

This will also save your engine and tranny from damage.

Usually ginagamit ang double-clutching kung gusto mo ng biglaang use sa engine brake with the normal brake which is very helpful in managing curves lalo na kung pababa yung daan.

Although you can use a power slide hehehe kung talagang nagmamadali ka sa race :-)

[iqaruzz]

ah i get it..
so basically tinatapatan mo ang engine speed sa tranny speed.
since na nasa hi end ang rev range mo malakas kaagad ang torque para pagtapak mo di na nawawalan ng momentum.

ah!!. masubukan nga.


ThanQ

[Field Master]

So this is for manual transmission.
May equivalent ba ito sa auto transmission. Would pressing the A/T accelerator down to the floor fast would produce the same results as M/T double clutch?

[jim]

Correct me if i'm wrong pero pag naka-high ka sa A/T then you want to decrease speed ifo-floor mo yung accelerator para bumaba ng isang gear then shift to low. Parang ganun din ang prinsipyo the difference is wala kang clutch hehehehe (obvious ba kaya nga A/T eh nyehehehe).

[mbt]

anong kaibahan in terms of effect ng double clutching sa simply shifting without letting off the clutch?

[jim]

kung di bibitawan yung clutch wala lang parang nag-shift lang para nakahanda na pag nag-slow down na yung sasakyan. pero once na binitawan ang clutch na di pa nag-match yung revs ng tranny at engine may gruntling sound, sign na di kumagat agad yung gears which may damage the gears pero babagal din naman agad yung sasakyan.

[mbt]

i mean, anong kaibahan ng double-clutching technique sa pag-blip ng throttle with the clutch depressed? hindi ba pareho lang yung labas nun sa blipping the throttle in neutral with the clutch not pressed?

[jim]

parehas ang labas pero mas smooth ang effect ng double-clutching. :D

[jim]

add ko lang nalimutan ko. double-clutching is best para sa lumang vehicles w/o syncronized trannys. kung bago vehicle mo at synchro tranny mo then "blipping the throttle" is the best kasi no need to match revs :D