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Unread 07-18-2009, 05:19 AM   #1
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Default Shifting.

so, I was wondering if it you can shift too fast. (granted clutch still depressed and all that)..
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Unread 07-18-2009, 09:49 AM   #2
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By shift too fast you mean can you damage something?

Yes, gears grinding is the first clue, but accelerated wear of the synchronizers happens but it's difficult to know that until your gears start to grind even when you are not shifting fast. Some cars just don't like fast shifting on a regular basis.

It's hard to know what cars can take it and how fast is too fast.
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Unread 07-18-2009, 11:19 AM   #3
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my gears don't grind.. and I only do it when I'm racing someone down the street (within the speed limit lol)
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Unread 07-18-2009, 11:39 AM   #4
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When up shifting there is a "natural" time it takes for the gears to slow down and synchronize. However, this often is longer than we want to wait, so the synchronizer adjusts the gear speed by slowing the faster one down quickly. This requires friction and therefore wear. The quicker we try to make the shift, the more friction required, the quicker the wear.

If you focus on how the gear change feels in your hand at different shifting speeds, you will notice if you delay and pause a bit the lever will just slide in with little effort. At just the right speed you could even shift with out using the clutch. If you hurry the **** you will feel more and more resistance in the shift lever. One some cars if you hurry too much the lever may not even go in the next gear as the synchronizer realizes the speed difference is to great and it prevents the gear change.

It's mostly over time that you realize that you have done damage, rarely it happens in the moment.
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Unread 07-18-2009, 05:59 PM   #5
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Another issue is that we are human, and obviously prone to making mistakes, the faster you try and shift the more likely you are to miss a shift or flat out not have the clutch all the way engaged and jam a gear.

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Unread 07-18-2009, 08:52 PM   #6
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you mean the fact I can pop my car out of gear with no clutch but it slides out as smooth like the clutch is in (happens only when I'm coasting or slowing down.. 2-5 does it no problem, no sounds, no smell, and it still shifts fine. )
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Yeah. Should hold up fine, long as you don't drive like a primate.

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Unread 07-18-2009, 10:03 PM   #7
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In your transmission you have driving gear (connected to the engine via the clutch), and driven gears (connected to your drive wheels).

The clutch is used to disconnect the power from the driving gears so that the synchronizer can adjust, or synchronize the gear speed to allow the selecting sleeve to slide to the next gear without clashing.

If you drive at a speed that produces no load on the gears, like a very gentle cruise you can pull the lever in and out of gear without clashing if you hold the throttle at exactly the RPM needed to drive that speed in that gear. BUT I don't recommend this on an ongoing basis. If their is a load on the gears when you pull it out of gear, you can damage the angled edge of the sleeve/hub that's responsible for keeping it in gear and it can start popping out of gear later.

Many years ago, up to about the '70's, some manual shift school buses had no synchronizers. Up shifts were done buy putting the clutch in and pausing a bit to allow the faster gears to slow down before engauging the next gear. It got much trickier when down shifting, you had to release the clutch when passing through neutral and rev the engine, push the clutch in at the correct RPM and engauge the lower gear. Double-clutching.

The early VW Bugs had no synco 1st gear. You could shift up into second, it was syncronized, but if you needed to shift into 1st gear you either had to stop completely or double-clutch going into 1st gear.
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Unread 07-18-2009, 10:08 PM   #8
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I accidentally did it, i rest my hand on the shift knob, I usually have a interlock that keeps it from coming out, maybe I just managed to do it just right, I can't get the car to go back into gear though, just out.
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He may have ruined his cylinder walls and compression wings.
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Yeah. Should hold up fine, long as you don't drive like a primate.

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Unread 08-13-2009, 04:10 PM   #9
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This could damage the gear box and lots of dollar will come out from pocket.

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Unread 09-11-2009, 03:05 AM   #10
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read the manual.It depends upon your speed.

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