Mr K
Posted a lot
Posts: 2,993
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Jan 30, 2006 18:35:23 GMT
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A few probably silly questions: What is double declutching? does this differ to double clutching? and what does it acheive? Also, what is the advantage to left food braking? Heel and toe? (i think?) what is it? Also, am i right in thinking that: Front wheel drive car starts to understeer, let off the power, and bring it back in gently, and not wind on too much lock? Over steer in a front wheel drive car, cause by lifting off - best to bring the power back in? the above two methods seem to work, - just wanted to be sure that this is correct! I think that years of driving cars around fields has tought me well! i seem to be able to correct things without even thinking about it - which is good....
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Jan 30, 2006 18:46:57 GMT
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Left food braking, is when you see something like a Cadbury's selection box or a plate of spaghetti bolognese abandoned at the side of the road, and you deliberately slow down in order to grab it for yourself.
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Last Edit: Jan 30, 2006 18:47:34 GMT by Mr_Bo11ox
1972 Fiat 130 1985 Talbot Alpine 1974 Lancia Beta Saloon 1975 + 1986 Mazda 929 Koop + Wagon 1982 Fiat Argenta 2.0 iniezione elettronica 1977 Toyota Carina TA14 BEST CAR EVER!!!!!!!! 1979 Datsun B310 Sunny 4-dr 1984 Audi 200 Quattro Turbo 1983 Honda Accord 1.6 DX GONE1989 Alfa 75 2.0 TS Mr T says: TREAT YO MOTHER RIGHT!
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Mr K
Posted a lot
Posts: 2,993
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Jan 30, 2006 18:48:38 GMT
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lol
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SteB
Posted a lot
Posts: 1,408
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Jan 30, 2006 20:44:36 GMT
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Lift off oversteer.... great fun for all you lowered early polo owners ;D Best corrected by letting off and clinging on for dear life whilst trying to control the kick!
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slater
Club Retro Rides Member
Posts: 6,390
Club RR Member Number: 78
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Drivingslater
@slater
Club Retro Rides Member 78
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Jan 30, 2006 20:49:57 GMT
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Double declutching is hard to explain but you only have to worry about it if you have a box without syncro because the syncro basicly does it for you Some people like to brake with their left foot so that they can push brake and acelerator at the same time. Its useful in fast corners where you don't need to change down a gear but need to 'balance' the car before taking the corner. Often you need a bit of brake but you don't want to take your foot off the throttle as you then get full engine braking and that may cause you to loose more speed than you want. geddit? Heel-toe is pressing the brake and throttle pedal at the same time with one foot. You do it when your changing down the gears and braking at the same time to aviod locking the driving wheels due to engien braking and to halp get a smoother downchange and balance the revs. You will brake and blip the throttle as you releace the clutch from each downchange. try it it takes a bit of practice to get right but you will slow down alot more smoothly an be able to keep the car under control under much heavier braking.
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Jan 30, 2006 20:51:41 GMT
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heel and toe is to keep your heel in one place on the floor and pivot your toes 'tween brake and accelerator pedals (I think, I keep getting proved wrong recently). its supposed to be faster, least it is on the track. left foot braking means you can keep the engine on cam/boost while braking for a corner, 'cos you've still got the skinny pedal mashed to the floor ;D
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Jan 30, 2006 21:35:22 GMT
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Double declutching is a way to make sure that engine speed is matched to gearbox on down changes. As slater says you don't need to do it on cars with sycncro but I always do anyway to save gearbox wear. Also if you practice it it means you can drive your car without a clutch should the cable snap. Take notice of your cars engine speed in different gears at different speeds (easy with a rev counter, without listen to the engine). For example 5th gear 2000 RPM 50mph= 4th gear 3000RPM 50mph= 3rd gear 4000RPM 50mph. In 5th gear at 50 dip the clutch put it into neutral lift the pedal increase the engine revs to 4000rpm and hold it at that then dip the clutch put it into 3rd and release the clutch. Sounds complicated but its not really Oversteer and understeer the same rule applies for both try to take away the cause of the skid to get control of the car.
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Nick
Posted a lot
Posts: 2,483
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DrivingNick
@rearwheelnick
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don't learn heel and toe. cos otherwise you will do it all the time and make fuel economy even worse. yeah i think its good to learn all these techniques really, add another one clutchless gearchange
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idea stolen from rattely eddie.
this weeks car count "5"
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heel and toe is to keep your heel in one place on the floor and pivot your toes 'tween brake and accelerator pedals (I think, I keep getting proved wrong recently). its supposed to be faster, least it is on the track. left foot braking means you can keep the engine on cam/boost while braking for a corner, 'cos you've still got the skinny pedal mashed to the floor ;D No, it's what slater said above your post
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Skyline: 1963 - 1973 - 1983 Sunny: 1982 450SLC: 1973 Navara: 1992 Gloria: 1992
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Jan 31, 2006 11:10:16 GMT
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It's all habit now after learning and passing my test in an old morris minor with no syncromesh... double declutch, heal and toe. Not that you need to, but heal and toe is not possible in many modern cars as the accelerator is set back from the brake.
If you can double declutch properly, you can also no-declutch or clutchless change both up and down the gears.
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There is nothing more expensive than a cheap Mercedes
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Jan 31, 2006 13:04:01 GMT
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double-declutch, left foot braking and heel'n'toe are all useful techniques to master if
a - you plan on rally or circuit driving b - you plan on driving a 20+ year old car as a daily driver. I've used all of the above techniques to keep some damn old banger from stalling in the winter commute!
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1941 Wolseley Not Rod - 1956 Humber Hawk - 1957 Daimler Conquest - 1966 Buick LeSabre - 1968 Plymouth Sport Fury - 1968 Ford Galaxie - 1969 Ford Country Squire - 1969 Mercury Marquis - 1970 Morris Minor - 1970 Buick Skylark - 1970 Ford Galaxie - 1971 Ford Galaxie - 1976 Continental Mark IV - 1976 Ford Capri - 1994 Ford Fiesta
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Odin
Posted a lot
Posts: 1,406
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Jan 31, 2006 14:32:40 GMT
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double-declutch, left foot braking and heel'n'toe are all useful techniques to master if a - you plan on rally or circuit driving b - you plan on driving a 20+ year old car as a daily driver. I've used all of the above techniques to keep some damn old banger from stalling in the winter commute! So very true - winter in my Golf forced me to learn heel-toe etc to just keep it alive. I've taken to using the handbrake instead of the footbrake in stop-go traffic now too, so I can keep the revs on whilst using the clutch. Something to note is that you'll realise the full extent of curse word brakes without engine braking helping. eeep
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