Home Mobile Forum News Cookbook FaceBook Us T-Shirts etc.: Europe/Worldwide. eBay Motorsport Links Advertising Live Chat  
Site Partners: SpotterGuides MotorsportAds MotorsTV (Sky 447)  
Related Sites: Your Link Here  

Go Back   TenTenths Motorsport Forum > Saloon & Sportscar Racing > Australasian Touring Cars.


Reply
 
Thread Tools Display Modes
Old 5 May 2017, 03:58 (Ref:3731117)   #46
Axeman444
Veteran
 
Axeman444's Avatar
 
Join Date: Jul 2006
Australia
Calling a spade a spade...
Posts: 3,696
Axeman444 should be qualifying in the top 10 on the gridAxeman444 should be qualifying in the top 10 on the grid
And people wonder why threats get made...

So, Barbagallo as a highly abrasive circuit, but relatively low speed, is tyre wear anywhere near that at the high speed but relatively normal abrasiveness of PI?
Axeman444 is offline  
Quote
Old 5 May 2017, 14:43 (Ref:3731244)   #47
RedZedMikey
Racer
 
Join Date: Oct 2004
Australia
Victoria, Australia
Posts: 322
RedZedMikey should be qualifying in the top 10 on the grid
Quote:
Originally Posted by Axeman444 View Post
So, Barbagallo as a highly abrasive circuit, but relatively low speed, is tyre wear anywhere near that at the high speed but relatively normal abrasiveness of PI?
My understanding (which may not necessarily be correct) is that tyre WEAR at Barbagallo would be greater than PI. Tyre FAILURE, as opposed to wear, was high at Phillip Island due to excessive stresses on the tyres internal construction. I haven't seen any references to tread wear on the PI tyres so have no idea what sort of conventional wear they had - the treads may still have been OK?

What disappoints me is that I remember reading before Clipsal that Dunlop were recommending reducing the amount of negative camber, but if anything it seems the teams pushed the other way. Then the majority of fans seem to want Dunlop's head on the block?

If your engine builder said we recommend you don't go over 7500rpm, but you say nah, we'll push it to 8000rpm, do you blame the engine builder if it goes pop?
RedZedMikey is offline  
Quote
Old 5 May 2017, 23:39 (Ref:3731365)   #48
V8 Fireworks
Veteran
 
V8 Fireworks's Avatar
 
Join Date: Jan 2009
Posts: 621
V8 Fireworks should be qualifying in the top 10 on the grid
Quote:
Originally Posted by RedZedMikey View Post
If your engine builder said we recommend you don't go over 7500rpm, but you say nah, we'll push it to 8000rpm, do you blame the engine builder if it goes pop?
I imagine they can probably handle 9000rpm actually, NASCAR run that, just the cam profiles will not be optimised for such rpm at the moment. Racing is all about pushing the limit and ignoring manufacturer specifications, but I agree they all must now strictly adhere to camber and pressure requirements.

Anyway, I am still looking to Dunlop for my road car tyres. They are the only ones who offer a 91Y spec that is 2kg lighter per tyre than the common 94W spec (have to import it from Europe though). They perform near the top of all the tyre tests, on par or better than the Michelins, Pirellis and Continentals, and best in the wet.

I'm considering these, even though stung by sister tyre Goodyear before. Also, excellent in the tyre tests and indeed excellent when new (as tested by the tyre tests), but seems to have lost grip as it has worn and worn fairly quick for a road tyre.
V8 Fireworks is offline  
Quote
Old 8 May 2017, 01:22 (Ref:3732093)   #49
Just Do It!
Veteran
 
Just Do It!'s Avatar
 
Join Date: Sep 2003
Location:
New Zealand
Posts: 4,075
Just Do It! should be qualifying in the top 5 on the gridJust Do It! should be qualifying in the top 5 on the gridJust Do It! should be qualifying in the top 5 on the grid
Quote:
Originally Posted by V8 Fireworks View Post
I'm considering these, even though stung by sister tyre Goodyear before. Also, excellent in the tyre tests and indeed excellent when new (as tested by the tyre tests), but seems to have lost grip as it has worn and worn fairly quick for a road tyre.
Power down tractions issues from the pilot, maybe?
Just Do It! is offline  
__________________
Tranquillity - What happens inside Shane's race car. Chaos - What happens outside Jamie's race car.
Quote
Old 10 May 2017, 06:54 (Ref:3732591)   #50
GTRMagic
Race Official
1% Club
 
GTRMagic's Avatar
 
Join Date: Dec 2002
Australia
Sell me this pen....
Posts: 41,515
GTRMagic is going for a new world record!GTRMagic is going for a new world record!GTRMagic is going for a new world record!GTRMagic is going for a new world record!GTRMagic is going for a new world record!GTRMagic is going for a new world record!GTRMagic is going for a new world record!
AusGT Allow Tyre Warmers

But read the justification...

Quote:
Originally Posted by the article
“We are allowing the tyre warming cupboards at the endurance rounds following a review of the circuits we are competing at and in consultation with Pirelli,” said category manager Ken Collier.

“The latest GT3 cars are developing much more aerodynamic down force than in previous cars and this results in higher corner speeds and greater load on the tyre.

“Also, there have been occurrences of tyre damage through low pressures and/or excessive camber set-up which is a problem in qualifying sessions.
“Tyre warming is permitted in many GT races in Europe and it has been found to extend tyre life and assist in reducing the occurrence of set-up related damage to the tyres.
Is this a solution?
GTRMagic is offline  
__________________
Lawrence Garfield: I love money. I love money more than the things it can buy. There's only one thing I love more than money. You know what that is? OTHER PEOPLE'S MONEY.
Quote
Old 10 May 2017, 07:10 (Ref:3732596)   #51
Tourer
Subscriber
Veteran
 
Tourer's Avatar
 
Join Date: Aug 2003
Australia
Sideways
Posts: 2,184
Tourer should be qualifying in the top 5 on the gridTourer should be qualifying in the top 5 on the gridTourer should be qualifying in the top 5 on the grid
Quote:
Originally Posted by GTRMagic View Post
AusGT Allow Tyre Warmers

But read the justification...



Is this a solution?
Possibly but that'll depend on Dunlop's view after the investigation of the tyres sent to Japan I would imagine. Tyre warming systems have long been outlawed in V8's - primarily on grounds of cost containment and also the challenge of cold tyres from a sporting point of view.

Need to bear in mind that F1 of course use tyre blankets and Pirelli has had the odd issue there too - remember the tyres disintegrating at Silverstone a few years ago?

Phillip Island clearly presents something of a challenge for tyre manufacturers - hopefully for Pirelli lessons learned last time will help this time and the same goes for Dunlop - neither has done a bad job necessarily, it's simply development of the product to suit extreme conditions.
Tourer is online now  
__________________
“We’re far from having too much horsepower…[m]y definition of too much horsepower is when all four wheels are spinning in every gear.” ― Mark Donohue
Quote
Old 10 May 2017, 07:56 (Ref:3732611)   #52
mayhem
Veteran
 
Join Date: Mar 2003
Aruba
On that Island in LOST.
Posts: 2,171
mayhem should be qualifying in the top 5 on the gridmayhem should be qualifying in the top 5 on the grid
Out of interest, is the only place this supposed Bathurst tyre test has been mentioned is from the keyboard/mouth of James Phelps?
mayhem is online now  
__________________
The Jerk Store rang...
Quote
Old 11 May 2017, 02:08 (Ref:3732748)   #53
ford71
Veteran
 
Join Date: Feb 2006
Australia
Adelaide
Posts: 830
ford71 should be qualifying in the top 10 on the grid
Pretty certain a Dunlop representative has spoken of the intention of testing and working with VASC to have it done at Bathurst or PI.
Maybe it was on Inside Supercars? I cant recall.
ford71 is offline  
__________________
.......just waiting for CHAZ MOSTERT to chalk up his first V8SC Championship!
Quote
Old 11 May 2017, 05:10 (Ref:3732755)   #54
V8 Fireworks
Veteran
 
V8 Fireworks's Avatar
 
Join Date: Jan 2009
Posts: 621
V8 Fireworks should be qualifying in the top 10 on the grid
Quote:
Originally Posted by Just Do It! View Post
Power down tractions issues from the pilot, maybe?
Haha, nope.
V8 Fireworks is offline  
Quote
Reply

Bookmarks




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Finding the correct tyre pressures for dunlop r5's Andrew Mitchell Racers Forum 44 14 Aug 2009 06:49
Dunlop Race Tyre Resellers GBRM Historic Racing Today 6 17 Apr 2007 13:23
driver faults sunflower Road Car Forum 33 19 Aug 2003 15:22


Powered by vBadvanced CMPS v3.2.3

All times are GMT. The time now is 10:41.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Original Website Copyright © 1998-2003 Craig Antil. All Rights Reserved.
Ten-Tenths Motorsport Forums Copyright © 2004-2016 Royalridge Computing. All Rights Reserved.