HOME FORUM RULES CONTACT
     
   
   

Go Back   CLASS RACER FORUM > Class Racer Forums > .90 Heads Up Class Racing Tech


Reply
 
Thread Tools Display Modes
Old 11-13-2021, 03:53 PM   #1
reknapp52
Junior Member
 
reknapp52's Avatar
 
Join Date: Nov 2008
Location: Cascade, CO
Posts: 48
Likes: 22
Liked 7 Times in 5 Posts
Default How Much Info Is Needed

Until recently I have used a hand held weather station, and paper graphs to make TS predictions. I'm retired now and want to step up my game if I can. For those of you who have onboard computers, what info do you track that you feel is most necessary for consistent tuning?
reknapp52 is offline   Reply With Quote
Old 11-13-2021, 07:15 PM   #2
Tom Goldman
VIP Member
 
Tom Goldman's Avatar
 
Join Date: Jan 2003
Location: Allentown,PA
Posts: 2,433
Likes: 770
Liked 696 Times in 201 Posts
Default Re: How Much Info Is Needed

With a data recorder you need to look at what is necessary for performance and what is nice to have for peace of mind .
Voltage, tach and G-meters are standard with the RacePak Sportsman .
Oil pressure ,water temp fall into the peace of mind category, nice to have but not a tuning aid .
Fuel pressure and Vacuum fall somewhere in between , both can show performance related symptoms .
A 8 magnet driveshaft collar & pickup is in the necessary category to determine tire slippage on the line and down track.
O2 sensors are invaluable in determining tuning changes due to weather and for confirming results from changes . ... at least one channel is necessary ,preferably two.
EGT is nice to have as well if you're on alcohol .
__________________
Tom Goldman 1500 SG , 1506 STK
Tom Goldman is offline   Reply With Quote
Liked
Old 11-13-2021, 08:02 PM   #3
Keith 944
VIP Member
 
Keith 944's Avatar
 
Join Date: Feb 2006
Location: Dela-where?
Posts: 2,112
Likes: 999
Liked 1,635 Times in 517 Posts
Default Re: How Much Info Is Needed

All you need is Matty box, mine works great!
__________________
KEITH MAYERS
2 X somebody
many X nobody
Keith 944 is online now   Reply With Quote
Old 11-14-2021, 10:07 AM   #4
Charlie Yannetti
Senior Member
 
Join Date: Jan 2005
Location: Alpine, NJ
Posts: 557
Likes: 178
Liked 179 Times in 77 Posts
Default Re: How Much Info Is Needed

Many people, like myself, have installed a RacePak Sportsman onboard data recorder, AND, use the Crew Chief Pro weather station and software.. I think this may have actually answered your question..

Tom has hit on the important sensors, and which ones assist in tuning, and thus, consistency..

NOTE: it is a weeeeeee bit different from a hand-held, but definitely worth it..
Charlie Yannetti is offline   Reply With Quote
Liked
Old 11-16-2021, 03:41 PM   #5
reknapp52
Junior Member
 
reknapp52's Avatar
 
Join Date: Nov 2008
Location: Cascade, CO
Posts: 48
Likes: 22
Liked 7 Times in 5 Posts
Default Re: How Much Info Is Needed

Thanks guys--

Charlie, I did purchase a Computech weather station at the beginning of this season, but have experienced some difficulties with it and will be sending it back to see if they can straighten it out. Biggest issue I had was it would show a 294 degree wind direction and therefore a non-existent tailwind when wind was actually a 270 degree direct crosswind. I set it up with a fan in the garage and the 90, 180, and 0 degree info seemed to be acceptable. So, been reverting to the old Tag that I've been carrying for the past 17 years.
reknapp52 is offline   Reply With Quote
Old 11-16-2021, 09:42 PM   #6
Keith 944
VIP Member
 
Keith 944's Avatar
 
Join Date: Feb 2006
Location: Dela-where?
Posts: 2,112
Likes: 999
Liked 1,635 Times in 517 Posts
Default Re: How Much Info Is Needed

What the others have said here is very good info. And of course I was kidding around.
But now I do have to add some insight on your wind issues. Forget about using it!
You probably don’t get the reading from the racing surface anyway. A basic average speed and direction are what you need but only at the track surface itself. Go stand at the 1000 ft and look for a flag or wind sock. Personally I have a good idea in the lanes
Then make my final adjustments after watching my own burnout smoke. Hope this helps, I really don’t like giving away hard learned tips
__________________
KEITH MAYERS
2 X somebody
many X nobody
Keith 944 is online now   Reply With Quote
Liked
Reply


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


All times are GMT -4. The time now is 07:08 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright © Class Racer.com. All Rights Reserved. Designated trademarks and brands are the property of their respective owners.