Shifting without the clutch

[Yaris Hilton]

Originally Posted by sickpuppy1

Truckers do it all the time, but the dont have sychro's and they are designed for this type of shifting after leaving low gear, I've heard its not good on the synchronizers also, but I'm no tranny expert. Funny, heres a video for ya, its called rev matching.
http://www.youtube.com/watch?v=jLw0h...=youtu.be&a%29

Rev matching = double clutching. The idea is to make the two shafts spin at the same speed before they come together. You can do that during the time the transmission's in a "neutral" state between gears without the clutch, but unless you can control the throttle so the gears have zero load on them as you're disengaging and engaging them, you're going to stress them more. The clutch is there to be used. Clutchless shifting is something to do in an emergency.