Team-BHP > 4x4 & Off-Roading > 4x4 Excursions


Reply
 
Thread Tools Search this Thread
Old 27th August 2009, 18:53   #106
Senior - BHPian
 
ex670c's Avatar
 
Join Date: Nov 2004
Location: Chennai
Posts: 2,467
Thanked: 1,864 Times
Default The Threat That Works

Quote:
Originally Posted by vinod_nookala View Post
So where do tyres come here? Well, tall tyres of sanjay gave 540 almost match 3bs breakover angle and allowed him to go low tyre pressures (he could have still gone lower). Never found his sand tyres zooming off and my tyres struggling for grip in the same section. Floatation is the key on sand , thread is not! HT's are pathetic in slush and mud i agree but on sand i didnt find any difference!

4x4 gurus can throw some light...

p.s- Iam looking forward to this discussion as this would decide my next tyre, else Arka will not allow me participate next time
Vinod,

Now I know how to threaten you, put you on the O-Team, break your winning streak.

On the note of the tyre, Flotation is key on any soft surface, it is decided by,
Primary Contact patch (the obvious 7"/8" Section width X length of contact section)
Secondary contact patch is determined by the Tread Pattern, because of undulation (treads) the contact patch increase by 10-30%.

The tread has a paddle or rudder effect.

Paddle is good for scooping the surface and increasing acceleration, though its very wasteful (in the pure design) and for climbs, did you see the Salem vehicles (JONGA & CJ5) float & climb, excluding the driver errors.

Rudder is good for steering i.e the centre rib, and absorb most of the road bumps.

Most tyres are combination of Paddle & Rudder e.g NDMS/NDCC even the Maxxis Trepador/Mudzilla/CreepyCrawler Simex Jungle Trekker/ Extreme Trekker, Tractor Rear Tyres, Tratcor Front Tyres.

The break-over angle factor can be manged with a bit of driver input, as your front wheels cross, rev up to clear the crest so that the nose comes down, even if you are stuck its easier to recover.

DO NOT TRY THIS IF YOU HAVE NOT WALKED THE TERRAIN.

or

as Dr. Jones correctly observed in the clay pits reverse up the slope, the cross-member is further behind as to frontal approach, hence you get longer reach before cross member fouls

I would suggest 7.50X16 NDMS if you intend to keep only one set.
If you want to keep 2 sets then 7.50X16 NDMS & 7.50X16 Apollo Bullet.

Regards,

Arka

Last edited by ex670c : 27th August 2009 at 18:57.
ex670c is offline  
Old 28th August 2009, 11:34   #107
Senior - BHPian
 
vinod_nookala's Avatar
 
Join Date: Aug 2007
Location: Mumbai
Posts: 1,737
Thanked: 424 Times
Default Gyan that works!

Now that was some serious Gyan

Would first like to see NDMS 7.50/16 performance on sand before deciding on the tyres. AFAIK no one has tried it till now. I cannot afford to have 2 sets of tyres. Would prefer having a tyre that is more or less an all rounder, good on sand and slush. Maxxis seems to be the best bet, but costs a bomb. May go in for Apollo bullet as suggested before next palar, but i think they are pretty bad in slush and slippery grass.

Last edited by vinod_nookala : 28th August 2009 at 11:35.
vinod_nookala is offline  
Old 7th September 2009, 12:32   #108
Senior - BHPian
 
headers's Avatar
 
Join Date: May 2006
Location: Greater Chennai
Posts: 4,631
Thanked: 483 Times
Default

Guys, TPC09 report on the Hindu Supplementary
headers is offline  
Old 7th September 2009, 13:30   #109
Senior - BHPian
 
headers's Avatar
 
Join Date: May 2006
Location: Greater Chennai
Posts: 4,631
Thanked: 483 Times
Default

Anybody could scan or post the link here?
headers is offline  
Old 7th September 2009, 13:33   #110
Senior - BHPian
 
beejay's Avatar
 
Join Date: Apr 2009
Location: The Nilgiris
Posts: 1,922
Thanked: 117 Times
Default

I was just going to ask the same. I got Arkas message in the morning. Unfortunately my town does not carry the supplement of the Metro Plus in the Hindu. Tried to search for it in the e paper, but in vain.
beejay is offline  
Old 7th September 2009, 16:07   #111
Senior - BHPian
 
ex670c's Avatar
 
Join Date: Nov 2004
Location: Chennai
Posts: 2,467
Thanked: 1,864 Times
Default The Hindu - Metro Plus Chennai (07-09-09)

Hi Guys,

A writeup in The Hindu on The Palar Challenge 2009.

the link --
The Hindu : Metro Plus Chennai / Events : Roughing it out
Attached Thumbnails
THE PALAR CHALLENGE 2009: Event Report-hindu-070909.jpg  

ex670c is offline  
Old 18th September 2009, 13:13   #112
Senior - BHPian
 
ex670c's Avatar
 
Join Date: Nov 2004
Location: Chennai
Posts: 2,467
Thanked: 1,864 Times
Default SS Music - Car n Bike Show

Hi Guys,

A full episode about TPC09 is being aired by SS Music in the Car n Bike Show.

The Schedule
18th Friday - 1200hrs
19th Saturday - 2245hrs

SS MUSIC

Regards,

Arka

PS - If any of you can record it, that will be very helpful.
ex670c is offline  
Old 18th September 2009, 13:32   #113
Senior - BHPian
 
14000rpm's Avatar
 
Join Date: Dec 2007
Location: Helsinki
Posts: 1,951
Thanked: 1,064 Times
Default

Quote:
Originally Posted by ex670c View Post
PS - If any of you can record it, that will be very helpful.
+1 to that. I'll not be able to watch it and would appreciate if we can find an alternative way to watch it apart from the show on SS Music.
14000rpm is offline  
Old 18th September 2009, 13:45   #114
Senior - BHPian
 
svsantosh's Avatar
 
Join Date: Mar 2008
Location: Hosur
Posts: 3,476
Thanked: 2,390 Times
Default

thanks Arka for the SMS.

Too bad I dont have SS music on TATA SKY !!!! Hope for some youtube uploads later.
svsantosh is offline  
Old 23rd September 2009, 11:25   #115
Senior - BHPian
 
esteem_lover's Avatar
 
Join Date: Jul 2006
Location: Madras/Py
Posts: 7,555
Thanked: 465 Times
Default

Quote:
Originally Posted by svsantosh View Post
thanks Arka for the SMS.

Too bad I dont have SS music on TATA SKY !!!! Hope for some Youtube uploads later.
Same here. No SS Music on Airtel Digital either.
esteem_lover is offline  
Old 23rd September 2009, 21:20   #116
Senior - BHPian
 
14000rpm's Avatar
 
Join Date: Dec 2007
Location: Helsinki
Posts: 1,951
Thanked: 1,064 Times
Default

Quote:
Originally Posted by esteem_lover View Post
Same here. No SS Music on Airtel Digital either.
So how many did get to see this telecast?
14000rpm is offline  
Old 23rd September 2009, 21:55   #117
Senior - BHPian
 
headers's Avatar
 
Join Date: May 2006
Location: Greater Chennai
Posts: 4,631
Thanked: 483 Times
Default

Quote:
Originally Posted by 14000rpm View Post
So how many did get to see this telecast?
I got to see it sat night. It was a mixture of the Vintage car meet where they interviewed Raghu and his Jag E Type and a little bit of Palar where there were snippets of some of our vehicles.

They interviewed Sundar - The owner of the ATVs, who claimed the ATVs do 0-100 in 4 seconds

The ATVs are good but not that good!

Guess the press guys were there more for the glamour than witness the real stuff. Anyways, there's always a next time.

Overall, an eye opener for many who did not know such an event existed!

Cheers to the organising team
headers is offline  
Old 30th September 2009, 01:24   #118
BHPian
 
mazdayar's Avatar
 
Join Date: Jul 2009
Location: Hyderabad
Posts: 91
Thanked: 5 Times
Default

Quote:
Originally Posted by vinod_nookala View Post
Mazdayar,
That was Ragav taking a short ride on ATV. He wasnt competing. I was present at the location and he was pretty slow, rather just getting a taste of ATV and was posing for the pic thats it! For a pic you need to be without helmet..doesnt it? :-)))
Never seen a king pose without his crown.
I strongly believe that if someone is on a machine with its engine running, he should be in full safety gear. Atleast a helmet.
mazdayar is offline  
Old 8th October 2009, 06:51   #119
Senior - BHPian
 
foby.sebastian's Avatar
 
Join Date: Feb 2008
Location: Thrissur/Kochi
Posts: 2,622
Thanked: 2,282 Times
Default

awsome offroading snaps
foby.sebastian is offline  
Old 16th October 2009, 14:39   #120
BHPian
 
DesertKing's Avatar
 
Join Date: Mar 2008
Location: Jodhpur, Rajasthan
Posts: 460
Thanked: 20 Times
Default

A picture speak more than a thousand of words.. and what about a video??? Check this out the first official video of TPC...

DesertKing is offline  
Reply

Most Viewed
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Copyright 2000 - 2020, Team-BHP.com
Proudly powered by E2E Networks