Mallala track/race May 26 & 27? - Page 2 - Triumph675.Net Forums
Australia and Asia-Pacific AAP Regional forum; rides, get togethers, events

Reply
 
Thread Tools Display Modes
post #11 of 30 Old 05-20-12, 22:04
Rorz
Senior Member
 
Rorz's Avatar
 
Join Date: Sep 2009
Location: Adelaide, Australia
Posts: 1,255
Thanks: 0
Thanked 0 Times in 0 Posts
My understanding is the air in the tyres expands as the tyre warms which increases the tyre pressure as the temperature rises. For this reason, the hotter the ambient/track temp, the lower you should have the tyre pressure set as the extra heat in the tyres will mean the pressure will continue to rise out on track (to temps higher than when on the warmers) and should end up where you want it anyway. It's best to set the pressures at full temp on the warmers, then again as soon as you come in from a session to make sure they are at optimum pressure while you are actually riding.

In cold weather, if you set the pressure as low as 26 at full temp on the warmers then go out and the track temp is real cold and you get held up by slower riders, by the time you get the hammer down, the tyres could be half the temp as when they were on the warmers and dangerously under-inflated.
Rorz is offline  
Sponsored Links
Advertisement
 
post #12 of 30 Old 05-20-12, 23:02
Anon
Member
 
Anon's Avatar
 
Join Date: May 2008
Location: Adelaide, SA, Aus
Posts: 314
Thanks: 0
Thanked 1 Time in 1 Post
Can't help but think of seinfeld with this....raise the feet, get blood to the head..no raise the head get blood to the feet.

A bit of interwebz trawling just makes it more confusing as both views are given....on a cold day raise the cold pressure to maintain optimum track pressure.....no! on a cold day lower the cold pressure to get optimum track heat.

Perhaps I should hedge my bets and run 40 front, 20 rear...that evens it out....right?

(btw I'm talking stone cold temps, 26psi in warmers would be about 21 cold)
Anon is offline  
post #13 of 30 Old 05-22-12, 22:17 Thread Starter
old blue
Senior Member
Threadstarter Threadstarter
 
old blue's Avatar
 
Join Date: Mar 2009
Location: South of most people.
Posts: 5,464
Thanks: 0
Thanked 38 Times in 31 Posts
Well, I see the forecast is now a nice even top of 16 degrees with scattered showers on both days.

It's a bloody good thing we all know it never rains at Mallala, or I might be a bit daunted by that.

So who's grown a pair and committed? I am 100% there, both days.



O.B
old blue is offline  
post #14 of 30 Old 05-23-12, 07:02
xrilek
BOTM Winner
 
xrilek's Avatar
 
Join Date: Apr 2010
Location: Adelaide,SA
Posts: 544
Thanks: 0
Thanked 0 Times in 0 Posts
I'm thinking about the weather plus no one is free to pick the bike! :(

xrilek is offline  
post #15 of 30 Old 05-26-12, 01:06
xrilek
BOTM Winner
 
xrilek's Avatar
 
Join Date: Apr 2010
Location: Adelaide,SA
Posts: 544
Thanks: 0
Thanked 0 Times in 0 Posts
....So,who was brave enough and risked it??

xrilek is offline  
post #16 of 30 Old 05-26-12, 02:06
TwoWheeledWonder
Noob Hazer
 
TwoWheeledWonder's Avatar
 
Join Date: Sep 2010
Location: KC,MO
Posts: 12,037
Thanks: 71
Thanked 238 Times in 179 Posts
Yeah I want to see some pics of Blue dragging helmet.

2010 TornadoRed D675 Trackbike
~
TwoWheeledWonder is offline  
post #17 of 30 Old 05-26-12, 20:08
xrilek
BOTM Winner
 
xrilek's Avatar
 
Join Date: Apr 2010
Location: Adelaide,SA
Posts: 544
Thanks: 0
Thanked 0 Times in 0 Posts
....anyone??

xrilek is offline  
post #18 of 30 Old 05-27-12, 00:25
Davidr
Member
 
Davidr's Avatar
 
Join Date: Jan 2009
Location: Adelaide
Posts: 474
Thanks: 0
Thanked 2 Times in 2 Posts
Was scared off by the rain though looking out Saturday I am guessing it wasn't too bad.

Pity, as I was keen to try out my new GPS lap timer. Made some use of it instead by carrying it in my pocket when I went running so I could track how far I went and how slack I am - so at least I have got that part of the software sorted.
(Pity it's a different program for lap time analysis)


Was a 2008 Tornado Red D675 (got broken)
Now a red 2010 RSV4R (that used to be black)

Davidr is offline  
post #19 of 30 Old 05-27-12, 00:46
TwoWheeledWonder
Noob Hazer
 
TwoWheeledWonder's Avatar
 
Join Date: Sep 2010
Location: KC,MO
Posts: 12,037
Thanks: 71
Thanked 238 Times in 179 Posts
Quote:
Originally Posted by Davidr View Post
Was scared off by the rain though looking out Saturday I am guessing it wasn't too bad.

Pity, as I was keen to try out my new GPS lap timer. Made some use of it instead by carrying it in my pocket when I went running so I could track how far I went and how slack I am - so at least I have got that part of the software sorted.
(Pity it's a different program for lap time analysis)
I bet that RSV does awesome on the track. I am still jealous of that bike, it is my top pick if I ever go to a liter bike.

2010 TornadoRed D675 Trackbike
~
TwoWheeledWonder is offline  
post #20 of 30 Old 05-27-12, 04:17
xrilek
BOTM Winner
 
xrilek's Avatar
 
Join Date: Apr 2010
Location: Adelaide,SA
Posts: 544
Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by TwoWheeledWonder View Post
I bet that RSV does awesome on the track. I am still jealous of that bike, it is my top pick if I ever go to a liter bike.
Same here! I told that to David the last time I saw him at the track!

xrilek is offline  
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Triumph675.Net Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode


Forum Jump

Posting Rules  
You may post new threads
You may 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

 
For the best viewing experience please update your browser to Google Chrome