|
|
| Re: Why Police Can Stop Motorists With Air Fresheners Hanging in Their Cars (1823612) | |||
 |
|||
| Home > OTChat | |||
|
[ Read Responses | Post a New Response | Return to the Index ] |
|
||
|
Re: Why Police Can Stop Motorists With Air Fresheners Hanging in Their Cars |
|
|
Posted by Stephen Bauman on Mon Apr 19 17:47:41 2021, in response to Re: Why Police Can Stop Motorists With Air Fresheners Hanging in Their Cars, posted by AlM on Mon Apr 19 17:21:35 2021. I believe you, but I don't understand how that works.There are 2 gears that have to mesh. The driving gear off the engine and the driven gears connected to the wheels. The clutch is between the engine and the driving gear. The problem without synchromesh is that the gears must be moving a close to the same speed to engage without grinding (and losing metal). For a given wheel speed, a lower driven gear will be turning faster than the higher driven gear. That's toothwise. Now you are down shifting. The driving gear is going too slow to mesh with the faster moving lower driven gear. Step on the clutch and shift from the higher gear into neutral. Now pop the clutch. The engine is turning the driving gear but the driving gear is not connected to any driven gear. Gently step on the accelerator to speed up the driving gear so it's close to the speed of the faster moving lower driven gear you want to engage. Step on the clutch a second time and shift into that lower gear without grinding the gears. The same problem exists in reverse, when upshifting. However, you want to slow down the driving gear. However, the driving gear will usually slow down when the clutch is engaged. This slowing is usually sufficient so that double clutching isn't required when upshifting. |
|
(There are no responses to this message.)
|
|