sudeepd

Gearshift Related Questions

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Hi Everyone,

            I am back with more questions.

 

1. Should the Gear Lever be Brought to Neutral Position everytime while shifting? 

   Example=While shifting from 1st Gear to 2nd Gear, should the lever be brought to Neutral Position (From 1st Gear) First and then shift to 2nd or the lever should be pulled in a straight line all the way left?

 

3. While shifting between Gears, is it necessary to take a brief pause (0.5-1 second) at the Neutral Position or shift within milliseconds?

     Example=While shifting from 2nd Gear to 3rd Gear, should I pause at Neutral Position or shift from 2nd Gear to 3rd Gear within milliseconds without taking any pause?

 

4. Can I shift to any Gear from any Gear bypassing middle gears?

     Upshifting- Means suppose if I drive upto 70-80kmph in 3rd Gear, can I shift directly to 5th bypassing the 4th Gear.

     Downshifting- Also can I downshift from 5th or 4th Gear directly to 2nd or 1st Gear, irrespectively (I dont know opposite of respectively, so I wrote irrespectively. Correct Me, if wrong) bypassing the middle Gears? Means if I want to shift from 5th to 1st Gear, can I?

 

 

More to Come.

-Sudeep

 

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1. It is not necessary to bring the gear lever to neutral position while shifting. In quick gear shifting, lever goes through the neutral position itself. Straight line push from 1st. - 2nd. is ok.

2. No need for a pause.

3. Yes, you can bypass, 4th.

If you are at a speed , you should not downshift abruptly  to 1st. or 2nd. without reducing speed, it will cause damage to gearbox.

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.
If you are at a speed ' date=' you should not downshift abruptly  to 1st. or 2nd. without reducing speed, it will cause damage to gearbox.
[/quote']

          I meant the following=

        I am Driving at 80-90kmph. I hit the brakes with full power. I didnt press clutch to avoid making the car Neutral (Skidding). Then after coming to around 10-20kmph, can I shift directly to 2nd without going this way 5-4-3-2?

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Ans 1 No

Ans 3 (or is it (2)) No

Ans (4) (or is it (3)) The answer is yes. By one's experience he/she knows which gear has to be engaged at a particular speed. So if you're doing 100kmph or more at the 5th gear and you suddenly slow down to 20kmph for whatever reason, you'll know instantly whether you can engage the second gear to move at 20kmph.

The gear increase while accelerating is always step by step 1,2,3,4,5 (or 6th if the car has it). But while reducing speed, it amy mean bypassing a few gears if the deceleration is sudden (braking and so on). If the speed is gradually reduced then a step by step climbdown is possible.

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1. Should the Gear Lever be Brought to Neutral Position everytime while shifting?

Not strictly necessary since it happens automatically. I have developed a style where I do give a momentary pause in Neutral. It was deliberate some years ago, but is now automatic. (remember we column shifts, and my first four-on-the-floor was an Escort in 1973) The result is that I find even baulky gearshifts behaving.

3. While shifting between Gears, is it

necessary to take a brief pause (0.5-1 second) at the Neutral Position

or shift within milliseconds?

Addressed above.

There is no. 2

4. Can I shift to any Gear from any Gear bypassing middle gears?
 Strictly a no-no but we all do it.

Earlier in the Amby and FIAT first gear did not have a synchromesh so you were forced to either crunch it or blip the throttle while shifting.

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1. Should the Gear Lever be Brought to Neutral Position everytime while shifting?
Not strictly necessary since it happens automatically.

 

I meant should the Gear Lever be brought to Neutral Position while shifting from 1st to 2nd and vice-versa (2nd to 1st) or the Gear Lever should be brought from 1st to 2nd and 2nd to 1st in a straight line?

 

  2. While shifting between Gears' date=' is it necessary to take a brief pause (0.5-1 second) at the Neutral Position or shift within milliseconds?
I have read somewhere that a brief pause should be taken to avoid damage to gearbox.

3. Can I shift to any Gear from any Gear bypassing middle gears?
 Strictly a no-no but we all do it.

3.What is the reason for not to shift directly bypassing the middle gears?sudeepd2008-08-08 17:04:04

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Dont bother too much over gear shifts, do as they come, be a little firm & hard on them. No need to handle in a girlie manner !

1. Shove the gear hard from 1st. - 2nd. , no need to stop at neutral position & straight away go from 1-2, neutral position gets passed automatically in the way.

2. During upshifts you can safely bypass middle gears.

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1. Shove the gear hard from 1st. - 2nd. ' date=' no need to stop at neutral position & straight away go from 1-2, neutral position gets passed automatically in the way.

[/quote']

 Almost all Cars in India have following shape of pattern

           1                 3                  5

                                               

                              N

                  

            2                4                  R

          Then how does Neutral come in way while shifting straight from 1st to 2nd or from 2nd to 1st?


2. During upshifts you can safely bypass middle gears.

What about while downshifting?

Can bypassing be carried out while downshifting without harming the gearbox?

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Neutral runs through like a line from 1-5, automatically while shifting, one has to go through it.

If you are going fast & without braking or reducing speed, you shift to a smaller gear, chances are that gearbox would suffer damage.

There is a funda of assisted breaking with gears, but that is done in a calculated way.

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@anjan

Means one should not skip middle gears while upshifting.

But one can skip middle gears while downshifting. Right?

Yes sudeep thats what I wanted to make clear. You are the best judge for every engine you drive- its ways and likes and dislikes and manners. So with this backdrop for every engine you can select the gears that can be skipped while downshifting.

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see

see

see..

its all about rotation of your engine's crank..,what u read as the RPM on your Tacho.

you can very well find different speed corresponding gears..

say 0-20 first gear.

15-30 second gear..n so on..

so whenever you are accelerating or decelerating  you jst hav to keep in mind about the corresponding gear with your speed..

n trust me after a while u learn driving..,you don't even have to look down for the gear number..,you just drive and u can change gears just by feeling the rpm with which ts speeding up.

Regarding neutral- see its not any hard n fast rule of bringing the gear lever to neutral every time you gearing up or down..its in fact non-convenient for you to practice such shifting....

i hope this solves your problem..

take care..,ride safe

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1. the gear lever invariably comes to the neutral position everytime you change gear.

2.the mechanism of the gear box does not require a brief pause between shifts.

3.while up shifting it is advisable to change gear progresively. while down shifting the syncromesh gear allows to change as you wish. it is safer and good for the gear box if you shhift from 5th to 1st when you brake and then accelerate.

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While up shifting it is advisable to change gear progressively. 

 

In the August 2008 issue of "What Car?", on page no.33 a article is given ""How to Save fuel"".

 

In that article, the tip no.5 says that ".........Use the highest gear possible without letting the engine labour and try changing straight from second to fourth gear or third to fifth - this not only saves fuel but also prevents wear and tear of the clutch."

 

Any comments on this are welcome.
sudeepd2008-08-19 16:05:23

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One more question.

 

After shifting to a higher gear or a lower gear then how long (in metres) should the vehicle (Bike or Car) travel before again shifting to another gear (higher or lower) to avoid damage to gearbox?

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This is true, even I drive in the highest gear possible & occasionally shift from 1st to 3rd, 2nd - 4th & 3rd to 5th.

There is no need to calculate distance in order to shift gears, it all depends upon the speed.

speed2008-08-19 16:15:14

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In continuation to the topic, I have another question: while I am in 4th gear, at a speed of 50KM, I am above to stop at a signal, say 200mts, is it advisable to press the clutch after I bring the speed down to 20 KM and then change the gear?

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In every Road Test of Autocar India, it is mentioned that so-and-so vehicle has Short-Throw Gearbox, or so-and-so vehicle has Long-Throw Gearbox.

 What is the meaning of both Short-Throw and Long-Throw Gearbox?

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Short throw gears are exactly what it says, when you shift from 1st to 2nd the distance the gear lever to be thrown to shift from 1st to 2nd if short it is a short throw, if the distance is long it is a long throw gear box. Short throw gear boxes are more convinient to use as you can shift rapidly.

BY THE BY shifting from 1st to 3rd or from 3rd to 5th or from 5th to 2nd or any which way can be done very easily.

You have to be VERY CAREFUL when you move from the higher gear like 5th to a lower gear say 2nd, it should depend on the RPM, if say you are speeding at 80 at 3000 RPM and you suddenly brake for a ditch and your RPM reaches 1500 you should depress the clutch and can get it in to 2nd. similarly if you reach max RPM in 3rd you can shift to 5th since the RPM range for the 5th gear covers the RPM range of the 3rd gear.

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Anijog,

          Thanks for answer.

Yes sometimes, I skip the gears while up shifting as well as downshifting depending upon RPM.

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I don't know whether to put this query in this thread or the Highest Fuel Effi. you got for your Bikes & Cars thread.

Mods : Do the needful.

So my query is

Most of the people say that in Higher Gear the Fuel Efficiency is More and in Lower Gear it is Less.

     Lets Take Example.

     Car A and Car B are identical cars.

    Suppose if a car A is driven at 1500rpm in 2nd Gear and car B is driven at 1500rpm in 3rd Gear in same operating conditions. Which car will give more FE since both are at identical 1500rpm albeit in different gears?

Also what happens in case of Bikes?

     There are two Identical Bikes, Bike A and Bike B.

     Suppose a Bike A is ridden at 3000rpm in 2nd Gear and Bike B is ridden at 3000rpm in 3rd Gear in same operating conditions. Which bike will fetch more FE?

EDIT:

      Does this apply to all vehicles which are run at identical rpm?

      Higher Gear the Fuel Efficiency is More and in Lower Gear it is Less.

        I am confused since the stress put on the engine must be the same at identical rpm (albeit different gears).

sudeepd2009-04-08 14:07:49

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As a thumb rule its said moving in higher gear gives more FE but provided the engine always has the required torque to pull in the higher gear.If not u may need to down shift and then come to higher gear to make ur engine running comfortably.

If the thumb rule is OK by all means u will have best in class FE if u do the following exersise.

Move the vehicle directly from 3rd or 4 th gear and immediately shift to 5 th gear.

Do u think u will have positive results?

Certainly not since the vehicle will have less torque to pull in higher gear.So it will consume lot more fuel and yields only negative results.

So as said it should be related to ur engine performance and can be best done only with ur experience with that vehicle.

Hope this answers all ur ques.

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Pritm,

         I asked different question and you answered different.

        Now again I will put this way.

     Suppose there are two cars C1 and C2.

            Car C1 is driven at 1500 RPM in 2nd Gear and

            Car C2 is driven at 1500 RPM in 3rd Gear.

   Which of the above cars will fetch more FE since both are running at identical 1500 RPM (but in different Gears)?

     Suppose there are two bikes B1 and B2.

            Bike B1 is ridden at 3000 RPM in 2nd Gear and

            Bike B2 is ridden at 3000 RPM in 3rd Gear.

   Which of the above Bikes will fetch more FE since both are running at identical 3000 RPM (but in different Gears)?

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