Quote:
Originally Posted by tracerit
now that it's hot in southern California, it's a bitch driving with the AC on. RPMs drop so quick and my 1-2 shifts are so sloppy :/
|
I live in SoCal too, it is indeed hot right now. I hate it. But having the AC on or off should not affect your driving. It doesn't for me anyway. Maybe a tad if the engine and tranny are cold.
As others have said before, it's all about feathering when moving out of standstill and the 1 -> 2 shift. Putting the clutch in and moving the shifter from 1->2 can happen almost simultaneously. You need to do that part quickly. The slow and smooth part is when letting the clutch out with gas. I think that can be misleading to new drivers. It's not really a perfect teeder-todder motion. I get to the engagement point a slip second before the throttle responds. This way the clutch helps brings the engine speed down.
If you don't feather it, it'll jerk. Even if you timed it perfectly.
If you dropped the clutch even when the engine and tranny speeds are matched, it'll STILL jerk.
Think of it this way.
A moving object that instantly comes to a stop will jerk. Obviously.
But also, an accelerating object that instantly comes to a constant speed will also jerk.
Thats what's happening in the engine. The prime mover of the engine, is slowing down once you let the clutch in. It's decelerating. If you let the clutch out too fast without feathering, then your forcing the decelerating engine to instantaneously start moving at a constant speed. Thats what causes the jolt. The transmission is loading the engine, rather than the other way around. I think people are so keen on making their clutch last, that they forget it's designed to slip and provide smooth transitions.