Thread: Gear Vs Brakes

Hi,

I have had this doubt for a long time and no one was able to explain this ti me in a proper way. Here it goes....

1.
While parking/stopping the car, its suggested not to put the gear in neutral position so that the car wont move. So, why doesnt it move? The wheel is engaged with the engine,. but does that mean that no force can over power the stopped engine?? What if we pull the car by a crane or something? Even in this case will the wheels be locked??

2.
Hand brakes-When are these brakes recommended?

3
Driving mountain terrain.
Is it good to drive with the gears dowm, or frequent braking is okay??

1. On a steep slope, leaving the car in gear as well as applying the handbrake is an added safety measure. Of course your car will move if you apply enough force to it! Only with an auto gear box, with the lever in "P" position is the transmission truly "locked"

2. Whenever the car is stationary for more than a very short time.

3. I am not a mountain driver, but... car manuals usually recommend to drive down steep slopes in the same gear that you would use to drive up them. Your car is more stable under engine-braking (lower gear) because brake-breaking (sorry for the clumsy word causes the weight to be put on the front, thus increasing the chance of a skid.

Never to use clutch, not too much breaking but on lower gears..
depends you are coming down or going up..

source:- personal exp.

What about double clutching??
Anyone aware of the technic? Will this really help to ease the JERK while shifting gearss? How about just throttling the accelarator, with out moving to neutral? Wont this work?

the ones i have written are recommended stuff in hills...

btw most recommended is you take services of a local driver...

Originally Posted by nevinjohn

Hi,

I have had this doubt for a long time and no one was able to explain this ti me in a proper way. Here it goes....

1. While parking/stopping the car, its suggested not to put the gear in neutral position so that the car wont move. So, why doesnt it move? The wheel is engaged with the engine,. but does that mean that no force can over power the stopped engine?? What if we pull the car by a crane or something? Even in this case will the wheels be locked??

2. Hand brakes-When are these brakes recommended?

3 Driving mountain terrain.
Is it good to drive with the gears dowm, or frequent braking is okay??

Nick_H has already explained and I will reiterate some of the things said.

1. When the car is stopped/parked, keeping it in gear gives additional safety. It takes great force to move a car in gear but yes, it will move even when parked in gear. The lower the gear the greater the force required. When cars are picked up by cranes, they usually pick the car from the side that have the transmission. For most modern cars, the drive mechanism is to the front wheel; so cranes usually pick the car from the front.
   
   But I usually park in neutral gear unless the car is on slope.
2. Hand brakes are recommended at any time when the car engine is shut off or you are stationery on a spot for more than a minute. Depends upon your own choice.
3. On steep slopes, it is advisable to drive in lower gear as lower gears control car speed much better than brakes. Frequent braking may also cause the brake pads to overheat and even burn out.

Hand brakes are recommended at any time when the car engine is shut off or you are stationery on a spot for more than a minute.

At signals, I am a great believer in ... handbrake on; neutral gear; foot off clutch.... in fact, foot off all pedals, and relax!

What about double clutching??
Anyone aware of the technic? Will this really help to ease the JERK while shifting gearss?

First, if there is a jerk, it is because you are not engaging the clutch smoothly while simultaneously adjusting the engine speed with the accelerator. There should be no jerk --- but we're all jerks occasionally

double de-clutching is the name of the technique. Ask your grandfather!

Once upon a time... there was no syncromesh mechanism in car gear boxes. That meant that you had to get the above gear change technique exactly right, or the gear would not even engage. The double de-clutch technique is supposed to make this easier.

1. depress clutch.
2. shift to neutral
3. release clutch
4. rev engine
5. depress clutch
6. engage gear

Now I'll admit that I can't actually do it

I have once driven a car that had a non synchro gearbox. Changing up was easy enough, changing down was almost impossible. I was only a teenager at the time; I guess it would have come with practise.

Both my parents could do it. My dad (1913-1992) once demonstrated driving a car without using the clutch at all. It was a windy road with hills too. Get the engine speeds exact and you can: the slightest error and horrible grinding noises happen.