01-21-2013, 07:14 AM | #1 |
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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 |
01-21-2013, 09:59 AM | #2 |
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Drives: e82 1M, f87 M2cs
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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, 10:36 AM | #3 | |
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Quote:
My advice -- don't do it. Neil |
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01-21-2013, 02:42 PM | #4 |
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Car and Driver
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, 05:48 PM | #6 |
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Guess this says it all
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"The mark of a great car is one whose overall competence exceeds what you should expect from its individual components and the 1M does just that", Chris Harris.
BMW 1M-SOLD-: TECH: Evolve Race+N55mids, Evolve IC, Michelin PSS, ER cp, aFe filter, CDVx, Vorshlag camber plates, BMS OCC EXTERIOR: trunk spoiler, blacklines, black grills, IND goodies INTERIOR: Alcantara steering wheel, steel pedals, custom mats, MPower e-brake. |
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01-27-2013, 01:59 PM | #9 |
First Lieutenant
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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, 02:05 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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