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Old 4th May 2016, 11:58   #151
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Default Re: Correct technique to slow down on highways for speed-breakers?

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Originally Posted by swiftdiesel View Post
When I sense a rumbler approaching, and I'm in top gear, I use the brake intermittently to bring the speed down. By intermittent, I mean, I mildly apply brakes and then release, and continue this till I bring the speed down completely, while also downshifting. Better heat dissipation results in the above method and this greatly helps in the longevity of brake shoes and lining.
Perhaps an equally important reason to do this is to let the car behind know what you are doing via your brake lights flashing on and off - you want to make sure the driver behind is fully alive to your actions. Works only if your brake lights are, of course.

Another thing to remember when emergency braking before a speed breaker or a pothole is to release the brake just before you hit it, to let the front suspension and ground clearance rise again to its full length so it can be fully available for dealing with the bump.
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Old 4th May 2016, 13:02   #152
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Default Re: Correct technique to slow down on highways for speed-breakers?

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Originally Posted by BertieWoosert View Post
Thanks all for your replies. Good to know the different perspectives on the first point about slowing down.

if you use second, there was a real danger of stalling or else riding the clutch to prevent that, and first was too jerky
Part throttle in 1st gear is the best way forward until you cross the series of strips. That way, you can maintain the crawl speed longer without over-revving.
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Old 12th July 2016, 14:52   #153
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Default Re: The best way to use the clutch, gear and brakes

A weird problem with my Accord in the morning. With the engine switched off, I can slot the gears. But when I switch the engine on, depress the clutch and then try slotting, the shifter doesn't slot.

What could be the problem?
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Old 12th July 2016, 15:00   #154
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Default Re: The best way to use the clutch, gear and brakes

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Originally Posted by honeybee View Post
I can slot the gears. But when I switch the engine on, depress the clutch and then try slotting, the shifter doesn't slot.

What could be the problem?
I had clutch fluid leaked due to burst plumbing causing dis-engaging clutch and changing gear was not possible (no issue when engine is switched off)? A friend had same symptom developed after clutch fluid plumbing developed vacuum (meaning pipe between clutch fluid container and slave cylinder developed block like symptom!), only opening salve cylinder+ clutch bleeding problem got rectified. Both cases car was Fiesta.

Did you had any leak?
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Old 12th July 2016, 15:03   #155
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Default Re: The best way to use the clutch, gear and brakes

None that I know of. The master cylinder, which I think is common for the clutch and brakes was recently replaced and there hasn't been any hit or external damage.

With engine off the gears slot very smoothly.
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Old 15th July 2016, 19:53   #156
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Default Re: The best way to use the clutch, gear and brakes

People driving in Bangalore would know that driving at Tin factory is a constant move between 1st and 2nd gear. To reduce clutch usage, I hold on to 1st gear and don't move to 2nd gear as I would anyways have to come back to 1st gear in a few seconds. This causes the car to jerk and shudder. When I engage first gear and give continous throttle input its all good. But when I take my foot off the gas pedal, the car jerks (probably due to engine braking) or if I increase the throttle input again there is a jerk. What's the best way to deal with this? If I slot into 2nd gear, then at the next moment I would have to start off from almost zero. Or shift back to 1st gear. I drive a Duster petrol
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Old 15th July 2016, 21:18   #157
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Default Re: The best way to use the clutch, gear and brakes

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Originally Posted by rohanak1 View Post
People driving in Bangalore would know that driving at Tin factory is a constant move between 1st and 2nd gear. To reduce clutch usage, I hold on to 1st gear and don't move to 2nd gear as I would anyways have to come back to 1st gear in a few seconds. This causes the car to jerk and shudder. When I engage first gear and give continous throttle input its all good. But when I take my foot off the gas pedal, the car jerks (probably due to engine braking) or if I increase the throttle input again there is a jerk. What's the best way to deal with this? If I slot into 2nd gear, then at the next moment I would have to start off from almost zero. Or shift back to 1st gear. I drive a Duster petrol
Same experience with me as well. I try to keep it in 1st gear and when you accelerate it is fine but the moment you take off your foot from A pedal it slows down rapidly due to engine braking and when you accelerate there is a jerk. The cycle repeats resulting in jerky movement of vehicle.

This only works when there is a movement of vehicles at certain speed.

Bumper to Bumper, inch by inch move invariably forces you to use the clutch.
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Old 15th July 2016, 22:29   #158
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Default Re: The best way to use the clutch, gear and brakes

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Originally Posted by rohanak1 View Post
When I engage first gear and give continous throttle input its all good. But when I take my foot off the gas pedal, the car jerks (probably due to engine braking) or if I increase the throttle input again there is a jerk. What's the best way to deal with this? If I slot into 2nd gear, then at the next moment I would have to start off from almost zero. Or shift back to 1st gear. I drive a Duster petrol
This is true for petrol engined cars while using the 1st gear. What you can do to minimize the jerks is to lift your foot off the throttle slowly. This would minimize the jerks to a large extent though it would not get completely eliminated. Perhaps you could try and look ahead and beyond the vehicle immediately in front of you, so as to time your actions accordingly.
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Old 6th September 2016, 17:24   #159
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Default Re: The best way to use the clutch, gear and brakes

Wanted to see how the other BHP-ians operate the clutch.

I don't keep my leg on the floor and then pivot the ankle while releasing/depressing the clutch. Instead, my heel levitates off the floor and i use my entire leg while releasing/depressing. This comes naturally to me rather than the ankle pivot method. And i feel this gives me more control over the clutch. Is my method correct?

Any other BHP-ians who do it this way?
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Old 6th September 2016, 19:50   #160
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Originally Posted by a*ed View Post
I don't keep my leg on the floor and then pivot the ankle while releasing/depressing the clutch. Instead, my heel levitates off the floor and i use my entire leg while releasing/depressing.
+1.

I follow the same process for clutch pedal usage. For accelerator and brake pedal operation, I pivot my ankle.

When I use the whole leg for movement (Read engaging and disengaging) the smoothness is notch better than if I pivot my ankle.

Last edited by a4anurag : 6th September 2016 at 19:51.
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Old 9th February 2017, 14:43   #161
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Default Re: The best way to use the clutch, gear and brakes

Is it okay to accelerate a little while releasing the clutch, when the car is in 1st gear? Or is it better to get the clutch to the biting point and then release it progressively without accelerating to propel the car forward? Which out of these two methods increases the longevity of the clutch.

Also, should the clutch have a higher biting point (i.e., the bite point is high up the travel/play of the clutch and just before the leg comes off the point) or lower biting point (i.e., the bite point is a little after you start releasing the clutch)?

Last edited by a*ed : 9th February 2017 at 14:45.
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Old 9th February 2017, 17:58   #162
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Default Re: The best way to use the clutch, gear and brakes

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Originally Posted by a*ed View Post
Is it okay to accelerate a little while releasing the clutch, when the car is in 1st gear? Or is it better to get the clutch to the biting point and then release it progressively without accelerating to propel the car forward? Which out of these two methods increases the longevity of the clutch.

Also, should the clutch have a higher biting point (i.e., the bite point is high up the travel/play of the clutch and just before the leg comes off the point) or lower biting point (i.e., the bite point is a little after you start releasing the clutch)?
Not sure what you mean. If your stopped, in first gear and release the clutch, by definition you are accelerating. I assume you mean whether you should use the throttle and or let the engine rev up as you release the clutch?

Clutch wear is essentially/simply put a function of how much you let the clutch slip, for how long and at what RPM. As a general rule you should try to let out the clutch quickly, but smoothly. Adding some throttle (i.e. RPM) shouldn’t be a problem in practice. Most clutch wear is due to prolonged slippage. E.g. ridding the clutch as it sometimes called.

There is no golden/rule of thumb as to where the clutch should “bite”. It tends to be car specific. Sometime it can be adjusted to suit ones personal preference. On some cars a change in where the bite occurs could indicate clutch wear.

More and more cars have hydraulic operated clutches and most of those are self adjustable, so clutch wear won’t show on the pedal/bite. Clutches that are operated by means of a cable and or linkage are also the ones, where you might be able to adjust the bite point easily.

A very low bite (i.e. you have to push the pedal all the way in to get full clutch release) could be a problem for these mechanical system. Because with further wear of the clutch there might come a time where you can’t fully release the clutch any more.

But again, its more down to the design and personal preference than anything else.

Happy clutching!

Jeroen
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Old 23rd May 2017, 13:43   #163
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Default Re: The best way to use the clutch, gear and brakes

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Originally Posted by Jeroen View Post
Clutch wear is essentially/simply put a function of how much you let the clutch slip, for how long and at what RPM. As a general rule you should try to let out the clutch quickly, but smoothly.

Jeroen
The practise that I follow is to depress full clutch, change the gear quickly and immediately release the clutch, then only press the accelerator, don't get jerks this way, not sure if this is the right technique, but feels very smooth.

Elite i20 petrol
26Kms

Regards
Shailesh
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