PICS: Tata begins testing Nano Twist Active AMT

blue_pulsar · 20th April 2015, 18:22

Quote:

Originally Posted by Motard_Blr

The updated Nano look good, the AMT and the hatch are good additions to make the Nano the perfect city car. But in terms of functional upgrades, I was expecting disc brakes at the front and a 5 speed gearbox. These would have been great improvements to the Nano. Nevertheless, I'm eager to test drive the new Nano and consider whether to upgrade my 2011 Nano to the Easy Shift model.

The disk brakes would have been perfect.

But, on the fifth gear, the 4th gear itself so unusable in the Nano. It is just for cruising with no acceleration whatsoever.

condor · 20th April 2015, 22:45

The AMT version is said to have a FE of 21.9 kmpl. This is about 12% lower than the MT version. Is this difference a litttle too much ?

Quote:

Originally Posted by blue_pulsar

TBut, on the fifth gear, the 4th gear itself so unusable in the Nano. It is just for cruising with no acceleration whatsoever.

But that fourth is on the MT version. The AMT version would have a different gear ratio ?

blue_pulsar · 20th April 2015, 22:54

Quote:

Originally Posted by condor

But that fourth is on the MT version. The AMT version would have a different gear ratio ?

I doubt that would make much difference. The real issue with the nano is that it has a very small engine. The engine should have been upgraded. A missed opportunity for Tata Motors.

Motard_Blr · 21st April 2015, 09:50

Quote:

Originally Posted by blue_pulsar

The disk brakes would have been perfect.

But, on the fifth gear, the 4th gear itself so unusable in the Nano. It is just for cruising with no acceleration whatsoever.

Quote:

Originally Posted by blue_pulsar

I doubt that would make much difference. The real issue with the nano is that it has a very small engine. The engine should have been upgraded. A missed opportunity for Tata Motors.

The problem with 4th gear is that it's too highly geared (km/h/1000 rpm). So unless you're doing at least 40 km/h, 4th gear can't be used. What's really needed, in my opinion, is 5 gears with the first 4 being slightly lower than the existing 4 and a new 5th that slightly higher than the existing 4th.
The lower gears would help the Nano climb up slopes with less effort and the taller top gear would help it cruise better.

The AMT kit is an add-on to the existing gearbox. There would not be any changes in gearing.

condor · 21st April 2015, 10:01

Quote:

Originally Posted by Motard_Blr

The problem with 4th gear is that it's too highly geared (km/h/1000 rpm). ... The AMT kit is an add-on to the existing gearbox. There would not be any changes in gearing.

The AMT is said to have 5 gears. If true, then this problem will be taken care of, at least to some extent.

condor · 21st April 2015, 14:55

Update / Correction:
The 5 gears are 4+1.
Got this confirmed today.

FourWheelDrift · 21st April 2015, 18:58

Quote:

Originally Posted by blue_pulsar

I doubt that would make much difference. The real issue with the nano is that it has a very small engine. The engine should have been upgraded. A missed opportunity for Tata Motors.

I wonder if any of the reputed tuners in India have worked their magic on the Nano engine, to liberate a few more horsepower ?

Maybe even remove the speed limiter ?

I think the 2 cylinder engine has been around long enough for someone to have tried and figured out what works.

Cheers,

FourWheelDrift

john doe · 21st April 2015, 23:24

Quote:

Originally Posted by FourWheelDrift

I wonder if any of the reputed tuners in India have worked their magic on the Nano engine, to liberate a few more horsepower ?

Maybe even remove the speed limiter ?

I think the 2 cylinder engine has been around long enough for someone to have tried and figured out what works.

The speed limit is not to protect the engine, but rather to protect the wheel bearings which have a certain upper limit of speed.

It might not be that much fun to have the speed limit removed, I suspect

FourWheelDrift · 22nd April 2015, 08:28

Quote:

Originally Posted by john doe

The speed limit is not to protect the engine, but rather to protect the wheel bearings which have a certain upper limit of speed.

It might not be that much fun to have the speed limit removed, I suspect

Not sure that this is fact or myth.

If that is indeed the case, I wonder how many Nano owners have had issues with wheel bearing failures ?

Cheers,

FourWheelDrift

john doe · 23rd April 2015, 11:00

Quote:

Originally Posted by FourWheelDrift

Not sure that this is fact or myth.

If that is indeed the case, I wonder how many Nano owners have had issues with wheel bearing failures ?

Cheers,

FourWheelDrift

Logically, no Nano owners will report wheel bearing failures since the speed limit in the car prevents over-speeding. Right?

FourWheelDrift · 23rd April 2015, 19:35

Quote:

Originally Posted by john doe

Logically, no Nano owners will report wheel bearing failures since the speed limit in the car prevents over-speeding. Right?

Well, not really.

If the bearings were as failure-prone above 105 kmph as you say they are, then those driving their Nanos on highways at around 90-100 kmph regularly (well within the cruising speed of the Nano, given it's tall gearing), would see reduced wheel bearing life with high mileage usage ... correct ?

Is that indeed the case ?

If the speed limiter were to be increased to say 115 kmph, to enable a 100-105kmph cruise on a highway, do you believe that would drastically reduce the life of the bearings ?

Cheers,

FourWheelDrift

uday.ere · 24th April 2015, 15:15

As per a post on the Tata Nano Facebook page, the unveil is supposed to happen today.

Pic from their facebook page -

ottocycle · 24th April 2015, 15:37

If I understand correctly. The launch is scheduled for today only. However, wasn't able to find the timing of the launch. Many people have asked about the timing on nano facebook page.

madhu33 · 24th April 2015, 17:07

Sharing some more details .
This as per me is a very good option for many routine chores in day to day life.
Please remember the increasing costs of rickshaws and taxis.
The ladies in the house might just love the practicality.

The improvements highlighted also are significant.
Its good to see Tata making some improvement on the safety front .
However as is the case with most of the launches in india no sta rratings of the crash tests being published.
Still would like to believe the Gen x Nano being a little more safer:

uday.ere · 24th April 2015, 17:22

Quote:

Originally Posted by madhu33

Sharing some more details .
This as per me is a very good option for many routine chores in day to day life.
The ladies in the house might just love the practicality.

Thanks for sharing. The ladies may also like the new "Persian Rose" shade that they have indicated here. The purple was already very popular.

21st April 2015, 14:55	#171
condor Distinguished - BHPian Join Date: Jun 2006 Location: Speed-brkr City Posts: 15,864 Thanked: 16,017 Times View My Garage	Re: PICS: Tata begins testing Nano Twist Active AMT Update / Correction: The 5 gears are 4+1. Got this confirmed today.
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24th April 2015, 15:15	#177
uday.ere BHPian Join Date: Aug 2008 Location: Bangalore Posts: 676 Thanked: 2,692 Times	Re: PICS: Tata begins testing Nano Twist Active AMT As per a post on the Tata Nano Facebook page, the unveil is supposed to happen today. Pic from their facebook page - Attached Thumbnails
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24th April 2015, 15:37	#178
ottocycle BANNED Join Date: Mar 2010 Location: Hyderabad Posts: 491 Thanked: 589 Times	Re: PICS: Tata begins testing Nano Twist Active AMT If I understand correctly. The launch is scheduled for today only. However, wasn't able to find the timing of the launch. Many people have asked about the timing on nano facebook page.
	() Thanks

24th April 2015, 17:07	#179
madhu33 BHPian Join Date: Aug 2013 Location: Mumbai Posts: 350 Thanked: 298 Times	Re: PICS: Tata begins testing Nano Twist Active AMT Sharing some more details . This as per me is a very good option for many routine chores in day to day life. Please remember the increasing costs of rickshaws and taxis. The ladies in the house might just love the practicality. The improvements highlighted also are significant. Its good to see Tata making some improvement on the safety front . However as is the case with most of the launches in india no sta rratings of the crash tests being published. Still would like to believe the Gen x Nano being a little more safer: Attached Thumbnails Last edited by madhu33 : 24th April 2015 at 17:11.
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