Continuing with the previous post here are the pictures of the 1st January 2010.
All the pictures are courtesy Harbeer Singh Chadha.
Same as always the meetup place was Signature Towers NH8. The meetup time was noon but by the time we guys left Signature Towers it was 15mins to 1PM. From here on I’ll let the pics do the talking
Following are the pics of Bobbie in is, well it used to be referred as the Black Mamba but after painting it yellow, I am not sure what to rename it…
Seen in the following pics Bobbie is eager to check the latest addition to his jeep, the 33” Yokohama MT’s followed by me in my CJ3B in 31” Maxxis Mudzillas being looked upon by eager villagers
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2011 starts with a big bang OTR. a glimpse of pics to come…
We guys went for another off-roading session on the 1st of January 2011 to,,, well break-in the new year and here is a glimpse of what we did that day.
Over the course of the next couple of days I would be uploading a series of pictures and some videos about that days activities.
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I’ve been driving a stock CJ3B since the past 2 years. All this while on stock 6.00 X 16 Non Directional Mud & Snow tyres, more commonly known as NDMS Tyres.
Picture curtsy: Sukhpal Khlabanda
Recently I came to know that a friend of mine was disposing off a set of 4 tyres of his vehicle I decided to buy and try them out on my CJ3B.
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I am really sorry for delay in posting the second part of the pics and videos. So without further delay heres the second and final set of pictures and videos for that day events.
So after negotiating the water on one side of the embankment we headed to the other side of the trail and we could see lots of water and it looked very inviting.
I having completed water crossing on one side, maybe got a little over confident and well… l
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As the 17th of November 2010 was a holiday due to Id, so some of us from the NIOC gang thought lets get together and go for some off-roading. Having heard lots about the river bank around the DND Expressway (Delhi-Noida-Delhi Expressway) but never been at this track, this place was chosen for the the days excursion.
Being a holiday we guys took it easy and started the OTR around 11am ish.
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This thing is quite confusing for me as well, so I thought that I might as well share some information that I am still trying to understand, for the benefit of all.
I would at present just tabulate the info as and when I get my hands on it and later on I might put it properly.
Most of the info is from teambhp and I would also be posting the relevant link along with the information I update
Also to note is that I would be changing, editing the info on this page from time to time. Therefore overtime the information on this page might change
The difs can be 5.38, 4.88, 4.22, etc
5.38 gives max torque and lower speed.
4.27 gives less torque and more speed comparatively.
Now, your 4.88 is a perfect compromise for speed and torque. However, this suitable for the OE 215/75/15 tyres which are approx 29.5″ in diameter.
Thus, for every rotation of your tyre, your axle moves 4.88 times. Or you can say that your axle needs to rotate 4.88 times to move your tyre by one revolution.
Your 31″ tyres now will cover more ground per revolution. Thus you will get more on-road speed. But, when you come to off road terrain, you will loose power since they axle has to work more to rotate the tyre and also the 31″ tyre is very heavy.
Thus, to come back to the same efficiency as the original 4.88, when you put 31″ tyres, you have to change your dif to 5.38.[/quote]
So as per the above I have checked my CJ3B and the diff ratio is 5.38 or 44:8
4.27 is 47/11 and 5.38 is 43/8.
MM540 came with 5.38:1. MM540 / MM550 with XD3P engine came with 4.88:1. Even today, Bolero SLX 4 wheel drive comes with 4.88:1 only.
Let Consider the total Toque Developed including the gearing at each wheel
For KMT-90-4WD & 4.27
(3.986 X 2.46 X 4.27 X 15.5kgm)/4 (no. of Wheels)= 162.2 Kgm per Wheel.
For KMT90-4WD & 5.38 = 204Kgm per Wheel.
The Advantage of 5.38:1 is
1) Better torque on the wheels
2) Better Crawl Speed (Slower the better)
3) compensates the Wheel Speed for taller Tyre (31″)
New Tyre OD / Old Tyre OD X Diff-Ratio = Corrected Diff-Ratio
31/28(standard for JEEPs) X 4.88 (standard for XD3P) = 5.40:1
Any thing Lower you will Lower End grunt end and gain Top End speed.
Its been a long time since I updated this thread. Barring some petty issues not much has happened since my last update!!!
I took the CJ3B for another OTR on the 21st of June 2009. It was actually a recce off the Bherampur track(not sure whether its Bherambur or Badshapur, I always get confused between the two But this is the track where we take a left from Haldiram on the NH8). Found a really nice extension of the track and this is where we are planning the forthcoming OTR on July 19th. We guys started early in the morning around 6 and were finished around noon!!!
The CJ3B preformed wonderfully never letting me down. Managed to do all the obstacles with relative ease.
I got a flat tyre. Driver side front!!! I guess I dint get them checked after the Faridabad OTR and went to another OTR after that with just topping up the air pressure. So Changed the tyre. A while later Amit’s jeep also had a flat. His 540 was also there at the Faridabad OTR. Now we were 3 jeeps with only 1 spare tyre to go. Luckily the tyres on all were NDMS 6 X 16’s.
We decided that if we get another flat, we’ll head back home as there’s no point taking unnecessary risk’s.
Just before we were leaving, checked up on the water level and just about less than half a pint was added to the radiator. The outside temperature must have been about 44 degrees but felt much more. It was Very Very HOT. The temp gauge was constantly at 60-65 degrees, occasionally rising upto 80 when were driving slowly or were stationary.
This I perfect I guess??? I can now say that the heating issue is resolved for good!!!