The Cal-look Lounge
Welcome, Guest. Please login or register.
Did you miss your activation email?
April 21, 2024, 22:48:34 pm

Login with username, password and session length
Thank you for your support!
Search:     Advanced search
350685 Posts in 28576 Topics by 6820 Members
Latest Member: chicochemxli
* Home This Year's European Top 20 lists All Time European Top 20 lists Search Login Register
+  The Cal-look Lounge
|-+  Cal-look/High Performance
| |-+  Pure racing
| | |-+  Frontrunners, wich size??
« previous next »
Pages: [1] Print
Author Topic: Frontrunners, wich size??  (Read 3345 times)
sven
Full Member
***
Posts: 149



WWW
« on: March 09, 2009, 22:29:52 pm »

Hi,

I have to order a set of frontrunners but I'm confused about the size.
Currently I'm running Michelin 135 FS 15, this is +/- a outer diameter of 23.97", still I see that the most used frontrunner slick is 22"x3.5x15??
Can anybody advise my.

Thx.

Sven
Logged
richie
Hero Member
*****
Posts: 5620



« Reply #1 on: March 10, 2009, 02:49:59 am »

Hi,

I have to order a set of frontrunners but I'm confused about the size.
Currently I'm running Michelin 135 FS 15, this is +/- a outer diameter of 23.97", still I see that the most used frontrunner slick is 22"x3.5x15??
Can anybody advise my.

Thx.

Sven

I am using 24/4.5/15 M/T its really personal preference,the smaller diameter is supposed to help R/T i believe

cheers richie
Logged

Cars are supposed to be driven, not just talked about!!!   


Good parts might be expensive but good advice is priceless Wink
sven
Full Member
***
Posts: 149



WWW
« Reply #2 on: March 10, 2009, 08:12:31 am »

Thx. Richie,
I gues R/T stands for reaction time?
Maybe this is intresting for a start like we had at SCC ( Orange-green), what system do they use at Santa Pod?

Sven.
Logged
BeetleBug
Hero Member
*****
Posts: 2836


Snabba grabben...


« Reply #3 on: March 10, 2009, 08:59:48 am »

Thx. Richie,
I gues R/T stands for reaction time?
Maybe this is intresting for a start like we had at SCC ( Orange-green), what system do they use at Santa Pod?

Sven.

The start procedure we used at SCC is called a pro start and I will be very suprised if they do not use the same start procedure at Santa Pod. For street legal races we have the possibility to choose handicap start, yellow, yellow, yellow - green.
Logged

10.41 - 100ci - 1641ccm - 400hp
Neil Davies
Hero Member
*****
Posts: 3437



« Reply #4 on: March 10, 2009, 10:22:31 am »

Thx. Richie,
I gues R/T stands for reaction time?
Maybe this is intresting for a start like we had at SCC ( Orange-green), what system do they use at Santa Pod?

Sven.

The start procedure we used at SCC is called a pro start and I will be very suprised if they do not use the same start procedure at Santa Pod. For street legal races we have the possibility to choose handicap start, yellow, yellow, yellow - green.

We call that the "sportsman tree" - the green comes on 0.5 seconds after the last yellow, whereas the Pro tree has the green light coming on 0.4 seconds after the three yellows come on together. We use the Pro tree in O/FF, but the E/T bracket classes use the Sportsman tree.

Back on topic, You can also adjust front tyre pressures to alter reaction time - the harder the tyres, the quicker reacting the car.
Logged

2007cc, 48IDFs, street car. 14.45@93 on pump fuel, treads, muffler and fanbelt. October 2017!
sven
Full Member
***
Posts: 149



WWW
« Reply #5 on: March 10, 2009, 19:27:58 pm »

Ok, I think I go for MH 24/3.6/15 with enough presure Wink

Thx.
Logged
Eric Justus
Full Member
***
Posts: 168



« Reply #6 on: March 17, 2009, 01:31:46 am »

google the word "roll out" and it will explain everything you need to know about tire size. There is a whol explanation of how your roll out affects your reaction time and your elapsed time. depending on the tree, your application and class you are racing, will depict the type of tire you need to run. I just recently spent a whole night reading up on this. its quite interesting. BTW, the tire size that Richie is running is near close to run of the mill for most applications guys are running.
Logged

Eric Justus
HotVWs, SuperVW, Let's Play VW Cal-Look features
Der Kleiner Panzers VW club
sven
Full Member
***
Posts: 149



WWW
« Reply #7 on: March 18, 2009, 20:05:58 pm »

I tried it but didn't find it, can you mention the URL.
Logged
Eric Justus
Full Member
***
Posts: 168



« Reply #8 on: March 19, 2009, 01:40:23 am »

I tried it but didn't find it, can you mention the URL.

http://www.summitracing.com/streetandstrip/tech_content.asp?ID=%7B0C714864-99B8-4C54-8531-F7708F675921%7D
Logged

Eric Justus
HotVWs, SuperVW, Let's Play VW Cal-Look features
Der Kleiner Panzers VW club
sven
Full Member
***
Posts: 149



WWW
« Reply #9 on: March 25, 2009, 21:10:28 pm »

Thx.
Seems their is alot to learn, I will need a lot of runs to test it all.
Logged
Pages: [1] Print 
« previous next »
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2015, Simple Machines Valid XHTML 1.0! Valid CSS!