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I heard this this term on TV while this drag racing thing was going on:
Clutchless transmission

What is it?
How does it work?

 
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wrong forum
are you talking about the semi-auto tranny?? Paddle shift??
Be more explicit...

 
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If it's a semi automatic then it's like having a manual transmission without the clutch pedal. You can just upshift & downshift without hitting the extra clutch pedal. I guess it's like playing a video game. Paddle shifting means you upshift & downshift by flicking the two paddles on either side of the steering wheel. It's pretty much the same like a regular semi automatic.

 
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Nope I'm talkingt about a clutchless tranny, they use it in Drag racing. Thats all Iknow about it. Paddle-shift is still manual and it has a clutch. Auto also has a clutch.

 
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I know that in many professional drag racing, a lot of people use the G-Force transmission. The G-Force transmission is like a semi automatic. There is no clutch pedals for it.

 
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^^ bingo, I think he's got the info you're looking for...it shifts like a triptronic, but gives the feel of a paddleshift...amazingly quick shifts if you have the $$

 
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I think he might be also thinking of those funky transmissions they use in drag racing that there is no actual shift gates. Instead of having to shift all around a gate in the center console, there's a seperate shifter for each gear. So, as you need to shift gears, you yank on the shifter and it upshift. So you'd have 3 or 4 different shifters in the cabin. Is that making sense? I'll hunt for a picture.

*edit* Maybe something like this?

 
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Must have really beefy syncros.

I wonder how you downshift?

 
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you don't...put it in neutral and let the parachutes do the rest

well, your brakes too...and the trans brake...

 
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Wow! Taz you need a bigger sig! I only had to scroll down half a page to read the next post!

 
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me is nearly as big. if he would follow the rules, they would be equal

 
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i like the 2 speed power glides.. badass on muscle cars..

 
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You're not maybe referring to CVTs are you? I haven't heard much of anyone using those for drag racing, but I don't imagine they'd be too bad as long as you beefed up the pulleys/internals a bit.

 
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the top fuel pro dragsters use a clutchless transmission, cuz a clutch would just melt instantly with 7000+ hp those guys put out... hmm ill try to find a link

whoops they use clutches, i was thinking of a centrifugal(?) clutch like on go-karts and such haha

still looking for a link for that tranny that uses the levers for each gears like in funny cars

 
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my friend claims to have this auto-clutch thing for his cougar. im not too sure what it is cause i have never driven it though. he has the 5-speed stick and claims when he runs the revs up all the way (doesnt have a redline on his stock tach???) that he can just shift and doesnt need to use the clutch. i saw him do this once. anyone know whats up with that?

 
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make that 7000+hp*

 
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when you are at the right revs, you can upshift and downshift without using the clutch, because the syncros are lined up... something like that
sry to ***** the thread, ill edit my posts from now on


apparently its more than likely an automatic tranny, or it uses a clutch and its a manual tranny, or its like the f-1 racecars and uses paddle shift which uses, to make it short and sweet, an automatic clutch..

 
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That's called semi automatic. It's the same concept as the Porsche's tiptronic transmission. It's actually still an automatic transmission but you can change gears. It's still using a torque converter instead of clutch. Those type of semi automatic isn't any faster than regular automatic. The gear change is still not as fast as manual transmission. Most of the semi automatic gearbox you see out there in newer cars use the same concept except for BMW (The SMG Transmission), Ferrari, & Audi. Their transmission is actually a manual transmission with computer controlled clutch just like the F1 racing gearbox.

 
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A real Clutchless Transmission is where you have a stick shift car and not have to push in a clutch. Its not like paddle shifters or rachet.

 
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i dont think they care anymore. its been almost 3 years.

 
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BigD001

 
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Way to ressurect a 3 year old dead thread, batman.