Clutch out - Gearbox Whine?

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Clutch out - Gearbox Whine?

Postby CozmoNz » Wed Mar 23, 2005 12:12 pm

Ok, so we all know, when you have pushed the clutch pedel in, the clutch is *disengaged*, eg a big empty space between the gearbox and the engine, so no power is transfered... right?

so why, if say your in first gear, does it still whine, even if you have the clutch disengaged?

theres no power going through... and its not the gearbox rolling on since i just pushed the clutch in, for example. i could push in the cluch, hold the brake, then get a mate of mine to push me again down a hill. the gearbox will start whining again.

obviously somethings getting through, and i want to know why :).
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Re: Clutch out - Gearbox Whine?

Postby JT » Wed Mar 23, 2005 12:32 pm

CozmoNz wrote:Ok, so we all know, when you have pushed the clutch pedel in, the clutch is *disengaged*, eg a big empty space between the gearbox and the engine, so no power is transfered... right?

so why, if say your in first gear, does it still whine, even if you have the clutch disengaged?

theres no power going through... and its not the gearbox rolling on since i just pushed the clutch in, for example. i could push in the cluch, hold the brake, then get a mate of mine to push me again down a hill. the gearbox will start whining again.

obviously somethings getting through, and i want to know why :).


Aren't you the training mechanic? this is basic stuff cozmo. When you put your foot on the clutch when in gear and the wheels are moving, the gearbox is working. The clutch seperates the engine from the gearbox, not the gearbox from the shafts. By your theory you could roll down the road at 100k and put the clutch in then put the gearbox in reverse :lol:

It's probably the input shaft bearing.
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Re: Clutch out - Gearbox Whine?

Postby CozmoNz » Wed Mar 23, 2005 12:36 pm

JT wrote:
CozmoNz wrote:Ok, so we all know, when you have pushed the clutch pedel in, the clutch is *disengaged*, eg a big empty space between the gearbox and the engine, so no power is transfered... right?

so why, if say your in first gear, does it still whine, even if you have the clutch disengaged?

theres no power going through... and its not the gearbox rolling on since i just pushed the clutch in, for example. i could push in the cluch, hold the brake, then get a mate of mine to push me again down a hill. the gearbox will start whining again.

obviously somethings getting through, and i want to know why :).


Aren't you the training mechanic? this is basic stuff cozmo. When you put your foot on the clutch and the wheels are moving, the gearbox is working. The clutch seperates the engine from the gearbox, not the gearbox from the shafts. By your theory you could roll down the road at 100k and put the clutch in then put the gearbox in reverse :lol:

It's probably the input shaft bearing.



Oh yeh >.>

ok, my bad, thought fowards, instead of backwards.

Figured the power was comming from the engine to the gearbox etc, which is impossible. forgot about (power?) comming from the wheels back into the gearbox.

completely my fault :).
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