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      01-21-2013, 08:14 AM   #1
lightning
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Perfect shifting

Hi guys,

I've been doing some research about Aryton Senna and some other pro drivers and I heard that they can up shift and down shift a manual car w/o using the clutch. It's called "perfect shift".

Anyone tried it b4? After reading up a little, it seems like you would need to match the engine speed w the gearbox speed.. Anyway it's just for discussion ans information purposes before I get pelted w stones
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      01-21-2013, 10:59 AM   #2
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I used to upshift without the clutch in my RX-8 occasionally after reading about that and it was surprisingly easy. I never dared to to downshifts that way. In the RX-8, the shifter would easily pop out of gear with gentle input once I lifted off the throttle and would then pop right into the next gear as soon as the revs had fallen enough to match. It was pretty cool. I played around with it in normal driving, but never on the track and never accelerating fully. That is also a low torque car.

I think you would be begging to break something in the 1M if you did it under hard acceleration. I haven't tried it in the 1M because the shifter seems to ask for a little more precision, especially on the 1-2. I have also had about 3 occasions where 3rd gear ground on me, apparently from lifting the clutch a slit second too soon, before the gears were fully engaged. The funny thing is that it has never happened when shifting fast or accelerating fast, always when I am driving slowly and just being smooth (or not!)

Ayrton Senna (God bless him) didn't have to pay for anything he broke!
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      01-21-2013, 11:36 AM   #3
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Quote:
Originally Posted by lightning View Post
Hi guys,

I've been doing some research about Aryton Senna and some other pro drivers and I heard that they can up shift and down shift a manual car w/o using the clutch. It's called "perfect shift".

Anyone tried it b4? After reading up a little, it seems like you would need to match the engine speed w the gearbox speed.. Anyway it's just for discussion ans information purposes before I get pelted w stones
More commonly called "speed shifting."

My advice -- don't do it.

Neil
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      01-21-2013, 03:42 PM   #4
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Below is the article from Car and Driver on how to drive a stick without a clutch. I'll save this experiment for the next time I rent a car in Europe.


http://www.caranddriver.com/features...thout-a-clutch
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      01-21-2013, 04:06 PM   #5
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Not sure how doable it is in a performance oriented car but did it all the time in an old ford ranger.
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      01-21-2013, 06:48 PM   #6
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Quote:
Originally Posted by P7X View Post
Not sure how doable it is in a performance oriented car but did it all the time in an old ford ranger.
Guess this says it all
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      01-21-2013, 07:20 PM   #7
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      01-26-2013, 08:03 PM   #8
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With a good gearbox it's very simple, not recommended, but simple.
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      01-27-2013, 02:59 PM   #9
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I've done it on my 1m... accidently..
I was driving with something on my mind and shifted into 4th from 3rd without clutch and I was like "what just happened?"
Tried it again and.. lets just say don't do it hahahah
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      01-27-2013, 03:05 PM   #10
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In a good gearbox it's easy, also easy to F up. I used to upshift and down shift w/o the clutch in my STi which had an awesome gearbox. In a BMW... Don't do it
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