Clutch issue ?
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06-06-2019, 11:27 AM
Post: #23
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RE: Clutch issue ?
Well nothing obvious. Looking at the inside of a T50 gearbox when
the box is in neutral with the engine idling, it can be seen that some parts on the output shaft are being driven by the countershaft. The driven parts are made to spin freely by being mounted on bearings. In general undamaged ball, roller or needle roller bearings have low friction and transmit negligible torque between the inner and outer race. But if a piece of debris gets into the bearing and wedges itself between a rolling element and a race, the rolling element may become a sliding element. This increases friction and the amount of torque transmitted from the driven part to the shaft it is spinning on. The particle of debris may be very small, but bearings have close tolerances, so something the size of a grain of sand can be a problem. However, if the debris is a bit of gasket material, tiny piece of brass or similar "soft" material, and it is only causing one rolling element to skid, it may well go unnoticed for a long time and cause little damage. On the other hand, if it is a "hard" particle like a flake of hard surface of a gear, it may dig into the bearing race and lead to early bearing failure. Without using sophisticated vibration/acoustic analysis and bench testing the gearbox, it is near impossible to diagnose what your gearbox problem might be. It may be a synchroniser ring dragging or some other oddball event. But back in the real world, if you continue to drive the car and pay close attention to the behavior of the gearbox, you just need to stop on a level surface every now and then, and see if the car still creeps in neutral while idling Cheers... jondee86 The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore, all progress depends on the unreasonable man. |
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Messages In This Thread |
Clutch issue ? - izanagi - 05-27-2019, 11:35 AM
RE: Clutch issue ? - Dave W - 05-27-2019, 01:13 PM
RE: Clutch issue ? - Power_uP - 05-27-2019, 01:15 PM
RE: Clutch issue ? - izanagi - 05-27-2019, 03:31 PM
Clutch issue ? - Bean - 05-27-2019, 03:38 PM
RE: Clutch issue ? - izanagi - 05-27-2019, 04:23 PM
RE: Clutch issue ? - Ivan141 - 05-27-2019, 04:26 PM
RE: Clutch issue ? - izanagi - 05-27-2019, 06:59 PM
RE: Clutch issue ? - Power_uP - 05-27-2019, 06:07 PM
RE: Clutch issue ? - Ivan141 - 05-28-2019, 09:07 AM
RE: Clutch issue ? - izanagi - 05-28-2019, 10:11 PM
Clutch issue ? - Bean - 05-29-2019, 08:09 AM
RE: Clutch issue ? - Ivan141 - 05-29-2019, 09:39 AM
RE: Clutch issue ? - jondee86 - 05-30-2019, 05:02 AM
RE: Clutch issue ? - Ivan141 - 05-31-2019, 08:56 PM
RE: Clutch issue ? - jondee86 - 06-01-2019, 10:46 AM
RE: Clutch issue ? - banpei - 06-02-2019, 02:33 PM
RE: Clutch issue ? - izanagi - 06-03-2019, 06:03 AM
RE: Clutch issue ? - Power_uP - 06-03-2019, 04:47 PM
RE: Clutch issue ? - izanagi - 06-03-2019, 09:43 PM
RE: Clutch issue ? - jondee86 - 06-04-2019, 11:24 AM
RE: Clutch issue ? - izanagi - 06-04-2019, 07:00 PM
RE: Clutch issue ? - jondee86 - 06-06-2019 11:27 AM
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