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Old 14th December 2008, 18:10   #1
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Default How come Swift DDiS and Indica Vista have such soft clutch?

There used to be a saying that diesel cars have a very hard clutch which can be unforgiving during long drives.
But to my surprise, i didn't find the clutch of Swift DDiS, DZire DDiS and Indica Vista any harder than my 800/WagonR/Santro Zipplus/Alto.
Is it to do something with the clutch being hydraulic? Is that the case in both Swift and Vista but not in the other MJD - Palio MJD ? I find Palio's clutch heavy and truly Diesel car like.

Whats the secret
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Old 14th December 2008, 21:51   #2
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Guess its due to hydraulic assist, but yes they are heavier compared to say Swift P :P
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Old 14th December 2008, 22:05   #3
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Are they hydraulic clutches? The swift P has a cable operated one IIRC.
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Old 14th December 2008, 23:22   #4
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yeah, Jaggu has said it.
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Old 14th December 2008, 23:47   #5
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I've heard people say that the Swift Diesel has a hard clutch: I have never found mine to be hard, just sort-of-normal
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Old 15th December 2008, 01:28   #6
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Is it generalised that all hydraulic clutches are soft ?? What about my accord why is it so tight inspite of being hydraulic !! It s a real pain to hold it in traffic accord owner s can confirm that i am sure !!
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Old 15th December 2008, 01:34   #7
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Actually this is something I find very dicey. In the Indica V2 NA version the clutch is extremely easy. Its just like in any other car.

And yet in the Turbo DLG the clutch appears at least 5 times harder. It gives a pain in the shins if I have to work it continuously in heavy traffic. I asked TASS guys as well as a Tata engineer once about this difference. But I am not sure any of them knew why it is so.
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Old 15th December 2008, 06:48   #8
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Quote:
Originally Posted by Zappo View Post
Actually this is something I find very dicey. In the Indica V2 NA version the clutch is extremely easy. Its just like in any other car.

And yet in the Turbo DLG the clutch appears at least 5 times harder. It gives a pain in the shins if I have to work it continuously in heavy traffic. I asked TASS guys as well as a Tata engineer once about this difference. But I am not sure any of them knew why it is so.
is it ? I drove the NA indica only for a while in driving school , so dont remember much about it.
the turbo does have a bigger dia clutch. could that be the reason?

and we should ask bouncer about the clutch in the vista TDI

Last edited by greenhorn : 15th December 2008 at 06:50.
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Old 15th December 2008, 13:17   #9
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Forgot to add mHawk Scorpio to the list. Very easy clutch.
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Old 15th December 2008, 13:48   #10
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Its just coz of using hydralic pressure to operate the clutch assemble rather than cable,
seen few bikes also to make the clutch operation easy with hydralic system.
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Old 15th December 2008, 13:50   #11
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Yesterday i was driving a friends 2months old indica diesel,i did not find the clutch as smooth as the petrol cars???but i found it was much smoother than the Sumo DX i used to own absolutely no idea about the Swift DDiS as never drove one.

"Or might we are getting stronger day by day"
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Old 15th December 2008, 13:59   #12
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Quote:
Originally Posted by DCEite View Post
Forgot to add mHawk Scorpio to the list. Very easy clutch.
Easy clutch? That's a spurprise !!!!!

In my CRDe, its pretty hard, on long drives and in city if I drive in thick traffic for long hours, gives me a pain in the knees. When I complain, the ASC does some tinkering but after a while its back to being hard, though it's hydrolic. Compared to my earlier car Ford Fusion and present Wagon R, working on the Scorp clutch is a pain.

So it's a surprise that it has improved all that much in the mHwak.

--Ramky
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Old 12th July 2009, 20:04   #13
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help from gurus needed
what is the experience on the clutch tightness in vista(TDI)?
how can we make a hard clutch soft?
thanks in advance
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Old 12th July 2009, 21:02   #14
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Generally speaking, all other things remaining constant; the higher the engine torque, the bigger the clutch required, and thus more the effort required to operate it (keeping foot travel constant).

Once this is understood, one can mitigate this by playing with leverage ratios (of the clutch pedal), orifice diameters (of clutch master cylinder and slave cylinder).

For the technically minded, one can browse "Light and Heavy Vehicle Technology by Malcolm Nunney" online : Light and heavy vehicle technology - Google Books

A nice primer at Exedy's site http://exedy.co.uk/techinfo/jtunerad.pdf

Cheers,

FourWheelDrift
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Old 12th July 2009, 21:33   #15
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Softest of the lot - Punto.
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