nasaforums.com

Official Forums of the National Auto Sport Association
It is currently Sun Dec 17, 2017 11:07 pm

All times are UTC - 8 hours




Post new topic Reply to topic  [ 5 posts ] 
Author Message
PostPosted: Wed Nov 29, 2017 5:23 pm 
Offline
Postmeister in Chief
Postmeister in Chief

Joined: Sat Jul 17, 2004 9:37 pm
Posts: 4184
Location: Southern California & AZ
11/29/2017—NASA 2018 Super Touring 1-4 and Super Unlimited Rules Released!

The 2018 version of the NASA Super Touring 1-4 & Super Unlimited Rules will be posted in the next few hours on the NASA Rules page. https://www.nasaproracing.com/rules

As in past years, NASA Time Trial classing will mirror classing of the Super Touring and Performance Touring series, so TT drivers can use these rules for purposes of 2018 TT classing as well.

There have been some changes made in the annual revision process, and they are noted by the blue text. Competitors may notice that the actual font and formatting of the rules has been improved for easier reading. The big change for the series is the addition of the ST5 class, but with the disparity between the rules for the new ST5 class and the ST1-ST4 classes, it was decided to separate those rules into an entirely different rules file.

One of the changes to the ST1-4 rules, brought about by driver input over the season, is rule 6.2.1.1h that allows for reinforcement of suspension mounting locations for strengthening purposes only. Another is that NASA has developed its own method of measuring tire width, called the NASA Section Width measurement, along with measurement tools that will be available in every region and templates for those tools in a .pdf file on the NASA Rules page. The NASA Section Width measurement will take the place of previous rules regarding tire size, with a transition period for ST1-4, but immediately for the new ST5 class. NASA will notify competitors via a Technical Bulletin when the transition will be completed, but it is anticipated in less than 6 months. This measurement will even out some of the tire width issues we have seen over the year in part due to wheel sizing, without having to actually limit or measure wheels. There is a minor change in the Modification Factor for the 245 size or smaller (NASA Section Width 266mm or smaller) from +0.7 to +0.6, and we have added a Modification Factor for UTQG Treadwear 200 or greater tires in all classes.

The only other major change is the method of calculating the Average Horsepower (Avg HP). While a little more complicated, it should provide a better approximation of the horsepower available over a range of usable RPM. As in the past, if a competitor does not want to do any of these calculations, the Maximum Horsepower can always be used to calculate the Adjusted Wt/HP Ratio instead! The improved method has more data points to be evaluated with a switch from looking at the HP in 500 rpm increments to 250 rpm increments. As well, the number of data points used for the actual calculation will depend on the engine’s rpm redline. Larger, lower revving engines will use less data points, and the smaller engines that rev higher will use more data points giving them a measurement of a wider rpm power band.

Have a great 2018 season, and we will see you at COTA in September for the once again unified NASA National Championships!

Greg Greenbaum, M.D.
NASA National ST/PT/TT Director

_________________
Greg Greenbaum
National TT, PT, & ST Director
Nat. Medical Director
greg@nasa-tt.com


Top
 Profile  
 
PostPosted: Thu Nov 30, 2017 4:36 am 
Offline
Forum Hot Lapper
Forum Hot Lapper

Joined: Tue Apr 23, 2013 5:22 pm
Posts: 72
Greg - when will will the section width template PDF be available on the rules page?

_________________
2003 E46 M3

2017 NASA TX TT3 Champion
2014-2016 NASA TX TT3 Runner-up


Top
 Profile  
 
PostPosted: Fri Dec 01, 2017 2:35 am 
Offline
Postmeister in Chief
Postmeister in Chief

Joined: Sat Jul 17, 2004 9:37 pm
Posts: 4184
Location: Southern California & AZ
Clavette wrote:
Greg - when will will the section width template PDF be available on the rules page?

I thought they were going to be posted yesterday, but I know the folks who would actually upload them are at the 25 Hour. So, it might be a few more days. I'm going to see if they can post them today, though.

_________________
Greg Greenbaum
National TT, PT, & ST Director
Nat. Medical Director
greg@nasa-tt.com


Top
 Profile  
 
PostPosted: Mon Dec 04, 2017 7:01 pm 
Offline
Forum Hot Lapper
Forum Hot Lapper

Joined: Tue Apr 23, 2013 5:22 pm
Posts: 72
I measured Hoosier A7 245/40/18 on Arc 8 9.5" rims. They fit easily within the 266 template both on car and off car. I had some loose tires (not mounted on rims) and they were real close (close enough that I didn't trust my cardboard template).

_________________
2003 E46 M3

2017 NASA TX TT3 Champion
2014-2016 NASA TX TT3 Runner-up


Top
 Profile  
 
PostPosted: Wed Dec 06, 2017 11:31 am 
Offline
Postmeister in Chief
Postmeister in Chief

Joined: Sat Jul 17, 2004 9:37 pm
Posts: 4184
Location: Southern California & AZ
Clavette wrote:
I measured Hoosier A7 245/40/18 on Arc 8 9.5" rims. They fit easily within the 266 template both on car and off car. I had some loose tires (not mounted on rims) and they were real close (close enough that I didn't trust my cardboard template).

Exactly. That is why if you put it on a bigger wheel that it will not be compliant with the 266 template.

_________________
Greg Greenbaum
National TT, PT, & ST Director
Nat. Medical Director
greg@nasa-tt.com


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 5 posts ] 

All times are UTC - 8 hours


Who is online

Users browsing this forum: No registered users and 5 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group