[vinod_nookala]

Originally Posted by DHABHAR.BEHRAM

Dear all - the major differences between NGCS and old chassis are as follows. NGCS has 2.5 times more torsional rigidity as compared to the old chassis. The rear spring centre line and frame centre line are concentric in the NGCS which is not so in the old chassis which uses outriggers. The rear spring shackles are located in the main NGCS itself which is not so in the old chassis. The tubular cross members of the NGCS are located in trepanned holes in the long members, which is not so in the old chassis.

Old chassis is history.

Best regards,

Behram Dhabhar

Sir,
To add to what you have said, Spring sets are wider and i think the gearbox cross member is a little higher than old C section chassis. I think the driveline geometry is also different and so are the axles with thinker tubing and rear being FFRA. Plus Army NGCS have different and lower perch points than even the NGCS civilian chassis. This allows to accommodate large wheel and articulation without rubbing any where

Please confirm if the suspension articulation of the newer army NGCS will match the old one.

Also can you elaborate how is the new suspension behavior different from the older one? I read some where that NGCS leaf springs have lower pitching than older springs in slow speed translating to better ride quality

[ex670c]

NGCS - New Generation Chassis & Suspension

Specs

1) Chassis - As DB Sir mentioned.
Further It Is "inspired" by the JEEP Wrangler YJ. The Rear End of this Chassis has been C-in-C ed into the AWB Scorpio.

2) Suspension - Wider Leaf Springs (Armada/Grand/Bolero)

3) Steering - MRCBT (Manual Re-Circulating Ball) the new M&M Non PS setup.
Eliminates 3 Ball-Joints over the older Idler Arm Setup.

4) Front Axle - 57" Dana 44 OKBJ with 4.88:1 Diff (19 Spline)

5) Rear Axle - 53" Track Dana 44 FFRA with 4.88:1 Diff (19 Spline)
If these MM550XDs had the Track-Lok LSD,

it will interesting to see if the 19 Spline Axles were converted to 30 Spline or
the Side-Gears in the LSD were converted to 19 Spline.

6) Gear Box & T-Case
2004-2006 - 4 Spd KMT90+T18 (Military Housing is considerably heavier/stronger).
2006-2008- 5 Spd Isuzu + T-Case (Weaker Aluminium Gearbox from Bolero 4WD).

Regards,

Arka

PS - DB Sir & Spike please correct me, if I am wrong.

[SPIKE ARRESTOR]

Originally Posted by ex670c

NGCS - New Generation Chassis & Suspension
4) Front Axle - 57" Dana 44 OKBJ with 4.88:1 Diff (19 Spline)

Arka, I have seen an other type of OKBJ which comes with 10 splines, which 19 spline OKBJ are you referring to? Please specify.

Spike

[ex670c]

Originally Posted by SPIKE ARRESTOR

Arka, I have seen an other type of OKBJ which comes with 10 splines, which 19 spline OKBJ are you referring to? Please specify.

Hi Spike,

M&M Makes 2 OKBJ (Live Axle)

i) 51" OKBJ Dana 44 for Major (10 Spline Hub & 19 Spline Side Gear).

ii) 57" OKBJ Dana 44 for Bolero/MM550XD and others (10 Spline Hub & 19 Spline Side Gear).

If there is a 10 Spline Side Gear OKBJ that would be new info to me.

Hope this clarifies.

Regards,

Arka

[vinod_nookala]

Originally Posted by ex670c

5) Rear Axle - 53" Track Dana 44 FFRA with 4.88:1 Diff (19 Spline)
If these MM550XDs had the Track-Lok LSD,

it will interesting to see if the 19 Spline Axles were converted to 30 Spline or
the Side-Gears in the LSD were converted to 19 Spline.
.

Spike,
Please clarify if 53" FFRRA rear axle on NGCS had LSD, also clarify the spine count

[SPIKE ARRESTOR]

Originally Posted by vinod_nookala

Spike,
Please clarify if 53" FFRRA rear axle on NGCS had LSD, also clarify the spine count

IIRC 53" FFRA come with 19 splines and the ones with LSD come with 30 splines.

Spike

P.S. Vinod, You are making my life difficult with tongue twisters Spike,Spine,Spline

[ex670c]

Originally Posted by SPIKE ARRESTOR

IIRC 53" FFRA come with 19 splines and the ones with LSD come with 30 splines.

P.S. Vinod, You are making my life difficult with tongue twisters Spike,Spine,Spline

Hi Spike,

If you don't show some spine, I will spline you for additional strength.

Then you will become FLUTED.

Hope that clarifies.

Regards,

Arka

PS - i) Tell us about the 10 Spline OKBJ
ii) Did the NGCS MM550XD have rear fitted LSD?

[SPIKE ARRESTOR]

Originally Posted by ex670c

PS - i) Tell us about the 10 Spline OKBJ
ii) Did the NGCS MM550XD have rear fitted LSD?

Arka, i don't remember the model for which the 10 spline OKBJ was used, may be it was a prototype used for testing purpose, I saw it lying dismantled in the scrapyard area, as i am not sure if NGCS MM550XD came with LSD,i refrain myself from making any comments.

Spike

[twistwrist]

Please clarify if 53" FFRRA rear axle on NGCS had LSD, also clarify the spine count

Hi Vinod , NGCS 550 never came with LSD.

[joshguy]

Originally Posted by vinod_nookala

Sir,
To add to what you have said, Spring sets are wider and i think the gearbox cross member is a little higher than old C section chassis. I think the driveline geometry is also different and so are the axles with thinker tubing and rear being FFRA. Plus Army NGCS have different and lower perch points than even the NGCS civilian chassis. This allows to accommodate large wheel and articulation without rubbing any where

Please confirm if the suspension articulation of the newer army NGCS will match the old one.

Also can you elaborate how is the new suspension behavior different from the older one? I read some where that NGCS leaf springs have lower pitching than older springs in slow speed translating to better ride quality

Hi Vinod,Here comes the next question

FFRA Full floating rear Axel? whats that and are there other types?

[susan3004]

@Master uio.
I hope this photo of the same plate helps.
I will decipher the details on the plate and mail it to you, which I feel should sort out the issue.

[master uio]

Dear Friends,

I understand from my Painter that the vehicle was always White and no trace of Green is under the skin anywhere - Which indicates that this amongst the Indian Army vehicles belonged to the Military Intelligence.

The vehicle is good. Using it extensively.

Sateesh (Hyderabad)

[Blue Thunder]

Sateesh, you are one lucky guy, to be driving around in an NGCS ex-Army 550 XD (in white, probably did UN duty)...a dream for me.

I think painting the insect mesh black would enhance the looks further.

[fazalaliadil]

Sateesh,

Congratulations! This is an immaculate 550 CLII. If it was in white before the repaint then it probably belonged to DRDO or MH. Not intelligence or UN.

It has a beautiful body line and a nice paint job. Get the head lamp guards, indicator guards, grab handles the same colour as the body and also the insect mesh seems whiter than the body.

The wheel rims are 160 PCD as on all latest army Jeeps, a very original ex-army.

Post photographs of the engine bay and the interiors too. Hope to see it in person soon.
Regards,

[chanu]

Originally Posted by master uio

Dear Friends,

I understand from my Painter that the vehicle was always White and no trace of Green is under the skin anywhere - Which indicates that this amongst the Indian Army vehicles belonged to the Military Intelligence.

The vehicle is good. Using it extensively.

Sateesh (Hyderabad)

Wow! simply superb! Nice find and no doubt you are a lucky guy to find this jeep in this condition. How did you find this beauty, any more of this kind still available ? I am very curious to know more about this fella.

Off late I am dreaming about 550 as my next project and looking at you jeep the torch of desire in my heart is going high flame. Congratulations on your ride and am definitely envying you for this.

Your jeep makes me feel this is the best amongst the rest in this class. How about some pictures from all sides, inside, outside (I think you got it) I also suggest you as Fazal sir said get the head lamp guard painted in white which will further enhance the look, try to put orange and red marker lights on the sides it will add up looks (ref pic of my jeep with red circles) Grote is a good brand and is available in Hyderabad. Hope to meet you sometime in person.