Clutch biting point

• forumer84

  3 Jul 07, 20:23

  Hi,i was just wondering..why do cars have different biting point? Even for those cars that are same the brand and same model?Why is it some are half-clutch,some 1/4 and some 3/4 clutch? Actually what determines the biting point and how does it determine it? Is it the engine make,type/quality of clutch,transmission or wat other factors?
  
  Y not all the car manufacturers agree to develop a "standard" biting point for manual cars?
  
  Any technical experts care to comment?
• bmx_rider

  4 Jul 07, 10:32

  Originally posted by forumer84:

  Hi,i was just wondering..why do cars have different biting point? Even for those cars that are same the brand and same model?Why is it some are half-clutch,some 1/4 and some 3/4 clutch? Actually what determines the biting point and how does it determine it? Is it the engine make,type/quality of clutch,transmission or wat other factors?
  
  Y not all the car manufacturers agree to develop a "standard" biting point for manual cars?
  
  Any technical experts care to comment?

  it may be that the 3/4 clutch is more used(wear),and the 1/4 is brand new car(still have thick clutch pad)...if the cars u're comparing is new and same model..den it may be the clutch pedal adjusting screw who is behind all this..
• mancha

  4 Jul 07, 11:17

  Simply put, imagine two disc. One is rotating because the engine is running.
  The other is pressed against the rotating plate, and therefore it also rotates.
  This is when the clutch is engaged, i.e. the clutch pedal is not depressed.
  
  When you step on the clutch pedal, the two disc separate, and therefore power is not transmitted to the drive wheels.
  
  When you slowly raise the clutch pedal slightly, the two disc slowly come together, until at one point, the two disc are just brushing against each other. That is the the biting point. You feel it. You sense it. You do not find the biting point by estimating the distance you raise the clutch pedal.
  
  The clutch pedal can be adjusted to have a high or low biting point.
  
• forumer84

  4 Jul 07, 15:50

  Originally posted by mancha:
  When you step on the clutch pedal, the two disc separate, and therefore power is not transmitted to the drive wheels.
  
  When you slowly raise the clutch pedal slightly, the two disc slowly come together, until at one point, the two disc are just brushing against each other. That is the the biting point.
  

  So the biting point depends on the distance between the 2 discs ie to say this distance differs for each and every car is it?
• mancha

  5 Jul 07, 17:51

  Look when the two disk are separated, and does not touch one another, and therefore power is not transmitted to the wheels, does it matter how far apart they are? Do not worry about the internal workings of the car.
  
  What you should concern yourself about is how far you need to step on the clutch pedal to disengage the clutch, and where, when you slowly raise your left foot, you feel the two disc comming together. You go by feel, so that on the slope, you know when to release your handbrake and accelerate without rolling back.
  
  Good luck, hope this helps
• Mr boy

  5 Jul 07, 19:15

  u'll get used to manual quickly if u go by feel, u can practice by controling the clutch on a slope to prevent ur car from rolling back, instead of just pulling ur hand brakes at least thats what i usually play around when i drive a manual.. not that boring at least lol
• HolySniper

  5 Jul 07, 19:24

  Originally posted by Mr boy:

  u'll get used to manual quickly if u go by feel, u can practice by controling the clutch on a slope to prevent ur car from rolling back, instead of just pulling ur hand brakes at least thats what i usually play around when i drive a manual.. not that boring at least lol

  u will burn ur clutch..
• bmx_rider

  5 Jul 07, 19:38

  lol yah..half clutch at slope can reduce boredom..hahaa..i do it all the time except for very steep slope..cannot to long ah..wait clutch asbestos wear out fast..
• Mr boy

  5 Jul 07, 20:06

  yeah i know will burn lol but how often u end up at slope..think most of the roads in singapore are quite level bah.. at most abit only
• AndrewPKYap

  5 Jul 07, 20:08

  Originally posted by forumer84:

  Hi,i was just wondering..why do cars have different biting point? Even for those cars that are same the brand and same model?Why is it some are half-clutch,some 1/4 and some 3/4 clutch? Actually what determines the biting point and how does it determine it? Is it the engine make,type/quality of clutch,transmission or wat other factors?
  
  Y not all the car manufacturers agree to develop a "standard" biting point for manual cars?
  
  Any technical experts care to comment?

  can adjust de... also due to wear and tear...
  
  they are different because the people adjusting it use their own judgment and sometimes adjust according to driver's preference...