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Old 25th February 2011, 15:20   #1036
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Default Re: Mahindra Thar : Test Drive & Review

@ BD , I knew it was not that easy and you would definitely advise against it , but each time I look at the Thar from the rear ,the rear track kind of disturbed me ,I was just wondering if there was a safe and easy way to even the rear track and now the case is rested and I will never ever think about a spacer again in my whole life
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Old 25th February 2011, 17:02   #1037
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Default Re: Mahindra Thar : Test Drive & Review

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Dear Mr. Behram..is there any rear axle from the Mahindra stable (SF or FF) which is a straight fit on the Thar?
An uncle of mine had fitted the rear axle on an FC on to a 2WD CJ-500D.
Dear Cpbopanna - the current Thar axle is actually a straight fit from one of our other models. That's why project cost is low so vehicle cost is competitive. We need to respect articulation clearances also. My brief to my engineers was not to change the way the vehicle looks so no changes to skin panels. Put a wider track axle, you get into articulation hassles, so you redesign body panels, so the shape changes, so the vehicle does not look like it was meant to, then we go into a design related project spin? No ways! I hope you understand.

The Thar CRDe engine's torque will break an FC axle like a twig in 1 minute flat. The aggregates are as different as apples and oranges. I can rattle off all the design differences between the two axles including gear modules and pressure angles but this is not the thread to do so.

What I am trying to impress upon you and everybody is that the "good old days" are now gone - forever. They will never come back. We need to drastically change our mindset. I know that it is hard to accept but we must do it. I trust that you / everybody will take my comments in correct prespective. I hope that one more loop of arguments does not start because it really leads nowhere. Thar CRDe is in a class of its own. Request, please do not make comparisons.

Best regards,

Behram Dhabhar
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Old 25th February 2011, 17:08   #1038
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Default Re: Mahindra Thar : Test Drive & Review

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Originally Posted by cpbopanna View Post
Dear Mr. Behram..is there any rear axle from the Mahindra stable (SF or FF) which is a straight fit on the Thar?
An uncle of mine had fitted the rear axle on an FC on to a 2WD CJ-500D.

Hi Bops,

You can fit the 53" FFRA from the Bolero VLX aka Storm.

How ever the orientation of the T-Case Output to Diff-Pinion maybe a few degrees off .

Regards,

Arka

PS - After changing the Differential Ratio.
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Old 25th February 2011, 17:30   #1039
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How ever the orientation of the T-Case Output to Diff-Pinion maybe a few degrees off .

PS - After changing the Differential Ratio.
1 degree to be precise.

Spike

PS-Arka, Storm comes with 2 pinion or 4 pinion differential?
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Old 25th February 2011, 17:35   #1040
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1 degree to be precise.

Spike

PS-Arka, Storm comes with 2 pinion or 4 pinion differential?
Spikey, you ARE the M&M ENGINEER

BTW, 1 degree should not make a difference right?
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Old 25th February 2011, 17:52   #1041
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Default Re: Mahindra Thar : Test Drive & Review

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1 degree to be precise.

Spike

PS-Arka, Storm comes with 2 pinion or 4 pinion differential?
Hi Spike,

AFAIK the 4-Pinion Carrier is for 3.73 and Below.

My Guess is Bolero "Storm" has the 4-Pinion Carrier.

Regards,

Arka

@ Headers, you are BE & MS from UK, watch it, 1Degree is enough to cause Prop-Shaft Vibration.

Last edited by ex670c : 25th February 2011 at 17:55.
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Old 25th February 2011, 18:10   #1042
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Default Re: Mahindra Thar : Test Drive & Review

Dear Arka - thanks for your comment which I knew was coming. "After changing the differential ratio", only one such axle exists and I think you know which vehicle it is fitted to. . I think you also know how that vehicle zooms past everything else.

There are many design parameters which are classified like the involute profile, the tooth shear strength, the tribology details etc. People have presented papers in international conferences like SAE International / FISITA and we have argued for hours on end just on one parameter out of these. I wish I could start a thread on all this but I shall not do so for obvious reasons. Just because the ratio is same, it does not mean that it is technically correct. .

Dear all - now you decide, would you as loving owners of brand new Thar CRDe vehicles want to play around with it after knowing all this? Did any other OEM even tell you this much? Think about it. It's a jungle out there. I only request you to please be careful.

Best regards,

Behram Dhabhar
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Old 25th February 2011, 18:34   #1043
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Dear Arka - thanks for your comment which I knew was coming. "After changing the differential ratio", only one such axle exists and I think you know which vehicle it is fitted to. . I think you also know how that vehicle zooms past everything else.

There are many design parameters which are classified like the involute profile, the tooth shear strength, the tribology details etc. People have presented papers in international conferences like SAE International / FISITA and we have argued for hours on end just on one parameter out of these. I wish I could start a thread on all this but I shall not do so for obvious reasons. Just because the ratio is same, it does not mean that it is technically correct.
Hi DB Sir,

53" FFRA + 4.3:1 Diff-Ratio ????I pray please tell me which vehicle.

You can share the Axle/Diff related information on http://www.team-bhp.com/forum/4x4-te...le-debate.html (The Axle debate)

Regards,

Arka
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Old 25th February 2011, 19:08   #1044
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Default Re: Mahindra Thar : Test Drive & Review

BD sir Since the topic of offsets etc is up i'd like to ask you if the Alloys on the Thar Adventure are, according to you, correct?

I would eventually be interested in installing alloys.and it would be good to know which ones are good.

I believe they have a lesser offset than +55 because of the way the tires are jutting out of the vehicle.
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Old 25th February 2011, 20:45   #1045
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Default Re: Mahindra Thar : Test Drive & Review

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Dear Arka - thanks for your comment which I knew was coming. "After changing the differential ratio", only one such axle exists and I think you know which vehicle it is fitted to. . I think you also know how that vehicle zooms past everything else.
Quote:
Originally Posted by ex670c View Post
Hi DB Sir,

53" FFRA + 4.3:1 Diff-Ratio ????I pray please tell me which vehicle.


Dear Sir, Please share details - IIRC it is a Maroon NEF 2.49 VLX CRDe running 16" Wheels and 4.3:1 differential ratio running a different REMAP? 120 BHP?

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@ Headers, 1Degree is enough to cause Prop-Shaft Vibration.
OMG, then what is the variance due to suspension travel and articulation of the axle w.r.t the Chassis/GB? There must be a tolerance upto which the design parameters would not permit prop shaft vibration. So is the tolerance in minutes then? LOL
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Old 26th February 2011, 01:55   #1046
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Default Re: Mahindra Thar : Test Drive & Review

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Originally Posted by ex670c View Post
Hi Bops,

You can fit the 53" FFRA from the Bolero VLX aka Storm.

How ever the orientation of the T-Case Output to Diff-Pinion maybe a few degrees off .

Regards,

Arka

PS - After changing the Differential Ratio.

Thanks for the info Mr. Behram/Arka.
One more quick question.
The FC mini-trucks those days had Perkins P-4 or Cooper engines which when compared to the MD-2350 in the regular CJ-500s had tremendous torque. Any idea about the actual torque of the Perkins/Cooper engines?? Just to compare torque with that of the Thar CRDe engine!
Regards,
Bopanna
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Old 26th February 2011, 12:39   #1047
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Default Re: Mahindra Thar : Test Drive & Review

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Originally Posted by ex670c View Post
Hi DB Sir,

53" FFRA + 4.3:1 Diff-Ratio ????I pray please tell me which vehicle.

You can share the Axle/Diff related information on http://www.team-bhp.com/forum/4x4-te...le-debate.html (The Axle debate)

Regards,

Arka
Dear Arka - there is a certain brown Bolero with TeamBHP / AKC stickers on the tail gate which very regularly does the Nasik - Mumbai - Nasik stretch, the differentiating performance as compared to other vehicles brings a quiet smile on somebody's face. . It belongs to yours truly. .

Best regards,

Behram Dhabhar
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Old 26th February 2011, 12:48   #1048
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Default Re: Mahindra Thar : Test Drive & Review

^ Yes, i can vouch for that bolero. She kept up most of the the time with the ML on the bombay - pune expressway with cyrus at the wheel. She was fast.
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Old 26th February 2011, 13:39   #1049
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^ Yes, i can vouch for that bolero. She kept up most of the the time with the ML on the bombay - pune expressway with cyrus at the wheel. She was fast.
What is ML?

Can we get some specs of "that" bolero please?
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Old 26th February 2011, 13:47   #1050
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What is ML?

Can we get some specs of "that" bolero please?
ML: Mercedes ML class.

I guess it has the same ratio as the thar. BD or cyrus can elaborate further on the specs.
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