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From: boltar2003 on 17 Jun 2010 10:46 On Thu, 17 Jun 2010 13:34:44 +0100 bod <bodron57(a)tiscali.co.uk> wrote: > Most modern autos have a manual selector, why not use that at a >roundabout or whenever necessary? Most of them are manual in name only. In mine it'll still change up and down when it pleases even in manual mode. It just holds onto the revs a bit longer before it does so or before I change it myself. Makes the whole thing a bit of a pointless feature check list exercise really. B2003
From: Tim Downie on 17 Jun 2010 13:01 Mortimer wrote: > "Adrian" <toomany2cvs(a)gmail.com> wrote in message > news:87s0ftFpioU53(a)mid.individual.net... > >> A DSG is nothing like those. >> >> It's basically a manual with electronic control. Plenty of others of >> that type around - going back to the hydraulic semi-auto in the DS >> in the mid '50s. Strap two of 'em together, and you're getting >> closer to the DSG. > > As a matter of interest, how easy is it to control the speed of a car > with a DSG when you are travelling VERY slowly - eg manoeuvring or > crawling forward in traffic? As easy as any automatic. If you're creeping up on traffic too fast a dab on the brake pedal disengages the clutch. > > In a manual, you'd slip the clutch if you wanted a speed that was > slower than you could achieve in a given gear with the engine idling. > In a conventional automatic, you'd have a torque converter to cushion > the start and to provide a bit of slippage. But how does a car with an > automatically-controlled conventional clutch handle this? Automatically. ;-) > > Do you have to rev the engine beyond the point at which the clutch is > triggered to engage, and then hold the car back on the footbrake > and/or come off the power once the car is moving? No. The clutch will engage even at idling speed (just like a conventional auto). To stop it creeping you just dab the brake pedal as required. > Can you get the > precision of movement to inch the car along when backing up to a > trailer? Not easily. It *is* possible to use throttle and brake together but the electronics damps down the power output from the engine. I've never felt the need to do this to hitch up a trailer though. > When you are doing a hill-start, is there a definite transitional > point at which you feel the clutch *beginning* to bite, so you know > that this is the point to release the handbrake? Like any car, it'll squat slightly as the clutch starts to bite. > > Maybe for perfect control a DSG should have a manual clutch pedal for > setting off and manoevering, and an automatic clutch for transitions > from first to second, second to third etc ;-) That would be nice for starting off. One of the most annoying aspects of my particular DSG gearbox is the slow engagement and lack of control when pulling out of side roads etc. On the other hand, you're less likely to stall halfway out of a junction. ;-) Tim
From: Ret. on 17 Jun 2010 13:57 Mike P wrote: > On 16 June, 18:26, %ste...(a)malloc.co.uk (Steve Firth) wrote: >> Adrian <toomany2...(a)gmail.com> wrote: >>> The 75 is over a decade old - and the sizes of cars, >>> segment-to-segment, have grown hugely in that time. >> >> The quality of cars has also improved hugely. But Kevin has developed >> cellar palate where the car he currently drives is, in his mind, the >> only one that gets it right. His comment on the C-class Merc showed >> that up. The Merc has one major fault, it's ugly as sin. Other than >> that it's a much, much, much better car than the Rover ever was. >> Kevin however could not see past "isn't a Rover". > > My dad's just bought a new C-Class. It's a *nice* motor. The shape is > a bit ugly, but it's a damn nice car. I have never claimed that the C-Class is not a good car. What I have said is that it is not the car for me because I prefer a car with more comfortable seats and a softer ride. I much prefer my 75 to the C-Class because it provides what I want from a motor car - comfort and a good ride quality. That does not mean that I consider the 75 to be a better car than the C-Class. What happens to be the perfect car for one person is rarely the perfect car for another. It it was we would all be driving the same car. -- Kev -- Kev
From: Ret. on 17 Jun 2010 13:59 boltar2003(a)boltar.world wrote: > On Thu, 17 Jun 2010 13:34:44 +0100 > bod <bodron57(a)tiscali.co.uk> wrote: >> Most modern autos have a manual selector, why not use that at a >> roundabout or whenever necessary? > > Most of them are manual in name only. In mine it'll still change up > and down when it pleases even in manual mode. It just holds onto the > revs a bit longer before it does so or before I change it myself. > Makes the whole thing a bit of a pointless feature check list > exercise really. I've never owned an auto with a 'tiptronic' type of manual change. I know several people who do, however, and they never use it. What is the point of having an automatic gearbox and then changing gear manually? -- Kev
From: Mortimer on 17 Jun 2010 14:23
"bod" <bodron57(a)tiscali.co.uk> wrote in message news:87uj33Fiu1U10(a)mid.individual.net... >> My main problem with an automatic, as a seasoned manual driver, is >> gauging how much power to apply as I come out of a roundabout, so as to >> give good acceleration but without engaging kickdown into second gear >> when in a manual I'd have held onto third and floored the accelerator. > > Most modern autos have a manual selector, why not use that at a > roundabout or whenever necessary? The last time I drove an automatic was about 8 years ago and the car (a Ford Focus) didn't have a manual selector to allow manual control of gearchanges - it just had PRNDL positions to allow a low gear to be selected when going downhill. I imagine that a modern automatic would be easier because you could slip the lever sideways into manual and it would hold whatever gear it was currently in until you manually nudged it up or down a gear. |