Tuesday, July 14, 2009

Learning to Drive: Clutch bite and roundabouts

Ok well it's been a while since I last posted, so I think it's a good time to talk about how far I've come with my driving lessons. Now, the clutch on a manual (or stick shift.. yuk!) is something that to me, is an arcane and somewhat cantankerous piece of engineering that should have been engineered out of existence about 50 years ago. So why is it still here, in this age of the anodised aluminium unibody Macbook Pros and high definition OLED televisions? It all comes down to the E word... the Environment.

The majority of automatic gearboxes produce more carbon dioxide than the equivalent manual variant. This is of course forgetting the magic DSG gearboxes that have two clutches, but they cost many monies. The reason (non double clutch) automatics haven't found their way into all cars is because they can sap the power of the engine, making the 0-60 time higher. Also, automatics aren't as efficient at handling the engine's power, so economy drops too. Basically, automatics should be avoided if possible (except the Jaguar XKR's ZF box).

So, unless you are very lazy or otherwise impaired, I'd suggest you learn manual. Well, atleast, that was my view until I started driving. It has taken weeks and weeks and weeks before finally managing to get the car moving off without it grumbling horribly. If you haven't driven, you probably won't know what clutch bite is, also, if you are a fairly experienced driver you too probably also don't know what I'm on about, since your foot automatically finds it out of muscle memory. It is that point in the clutch's travel where moving it any further would initiate the much enjoyed pastime of driving.

Clutch bite is a bit of a pain when you have to consciously think about it, and it can become nigh on impossible to find it quickly if you grip the wheel too tight. My previous lesson was all about junctions on a gradient, so for example when pulling out into a main road from a side road on a hill. This requires finding the clutch bite so that the car doesn't roll back. You'd think pressing the foot brake would suffice, but once you get your foot on that pedal, it's going to be really hard to re-find the clutch bite and move over to accelerator when you see a gap.

I am also working on my roundabout skills. These hideous creations still scare me, and I think the hardest part is spotting when it is safe to pull out, and having to make the decision as to whether or not one can pull out. It can be very tricky especially when cars don't indicate.

Roman

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