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Racepak Help & Tips - Click on one of these titles:
1. Seting engine RPM to be the record trigger 2. Sample rates
3. Power Gid Channels 4. Pressure Sensor Plug Installation
5. Correcting duplicate O2 cyl1 6. Mounting VNet Modules
7. Quick review of Racepak Datalink Graph 8. Changing number of magnets in shaft collar
9. V300 / V300SD Frequently asked questions 10. Strange Ultra case sensor installation
11. Stick / Clutch RPM sensor info 12. Pressure Sensor Facts
13. Benefits of the Racepak V-net system 14. Backing up your Racepak data logs
15. MSD 7761 pulse count passed to RP 16. How to get an average of one data channel
17. How to program the Racepak IQ3 18. Download Jetsize spreadsheet
19. How to measure for the DS collar 20. Using V300SD clutch input as TBevent
21. Changing G-meter settings for reverse mount 21. How to E-mail a Racepak data log
22. Adding new V-net sensor (READ V-NET procedure) 23. Shock Sensor Setup
23. Intresting Data Logs 25. You got a new laptop
26. Machining a collar to a new size 27. How to get the Sportsman system id

Changing the record trigger to Engine RPM

1. Hook up your laptop with the serial/stereo-type plug to your Sportsman with the power on the Sportsman
2. Open Data Link Software
4. Select Sportsman Sportsman (or a different name if your use something different)
5. Right Click on the top left channel button which is Sportsman
6. In the System Options section in the bottom left sub-window highlight Record Enable Channel.
7. On the right a drop down will appear with your current trigger item - change it to Engine RPM (You go upwards)
8. One line down within System Options, highlight Start recording When Channel Exceeds Value.
9. A text box will appear on the right where you enter 5000 or whatever you choose.
10. click on Send Configuration (which sends this to the Sportsman)
11. Click on FILE/SAVE




This occurs anytime two identical V-net ID's are installed on a system. Weather it is two AF-1's or two Carb pressures it essentially the same response

Screen shot showing duplicate error

Click on OK

Screen shot showing the O2 as a serial number

Right Click on that serial number

This screen will appear and you change the V-net to Cyl2

1. Left click on drop down
2. Left click on + of Fuel System category (screen shot shows -)
3. Left click on AF2 or whatever cylinder you want

You have changed the vnet Id and need to send it to the module and to your laptop

1. Left Click on Send
2. Left click on OK

screen showing that the o2  received the new info
Now you see the  AF2 on the channel button.

Last step is to save the config to you laptop
1. Left Click on Floppy disk Image


Quick Review of a RP graph

The Racepak software is called DataLink (actually DataLinkII) . It provides download, view, overlay, print, export and search capabilities.

   V-net Mounts

  1 1/4" x 1 1/4" x 1/8" Aluminum


Bolted in place

V-net modules ty-wrapped


 Changing Driveshaft Pulses Per Revolution

1. Connect PC to V300SD / Sportsman unit with serial cable (9 pin on one end and stereo end on the other and use your USB converter if necessary)
2. Turn power on the the recorder
3. Open DataLink software on your laptop
4. Go to File, Open Car Configuration
5. A box pops up for you to select your recorder & Config file
6. The second button on the screen is the DS RPM - Right Click on it.
7. Near the bottom of the lower left section is Pulses Per Revolution - left click on it.
8. This will open up a box on the right containing the number of magnets it is currently set for. change it to the desired number.
9. Left click Send Configuration near the bottom right.
10. A message log window will appear and start scrolling numbers very fast.
11. When a message appears Device Programmed Successfully, left click OK
12. Select File up at the top left of the Datalink screen
13. Left click on Save to save the change to your laptop.
14. Cycle power off/on the recorder to lock the changes in.

Also, you can change change existing runs recorded with a 8 magnet collar but the setup still on 2 by:

  1. Load the run into data link.
  2. Right click on DS RPM
  3. Find the box towards the right that says Raw data value B 1 will become 1
  4. Put .250 in the second box so that it reads Raw data value B 1 will become .250
  5. Click on OK on the bottom right.
  6. Click on the Save icon (looks like a floppy disk)

Read V-net procedure

  • Hook USB converter & serial cable (with stereo end) to V300SD/Sportsman
  • Power on all Racepak devices, o2’s etc (and Grid if attached to RP)
  • Go into Datalink on your laptop
  • Click on File/Open Car configuration – and pick yours – this will load your setup
  • Click on the READ icon (about 5th item down on the tool bar on the left)
  • a box should pop up saying devices read successfully.
  • Click on File/Save


7761 setup to send the correct number of pulses to the Racepak


Sample Rate

Vnet sample rate is a per channel setting you have a choice of 25, 50 or 100. Right click on the channel button in your config and select the desired rate and click send config.


Getting the average of any of your channels (example is AF)

1. activate the AF channel
2. select the AF channel in the file/grid box at the top of the graph area.
3.  place the cursor on the start point and left click, then push the [ key on the keyboard - you wil see a verticle red dot dash line appear
4. place the cursor on the end point of the time of interest and left click, then push the ] key on the key board another verticle red dot dash line will appear

to remove or change the time points hit ] then [


You got a new laptop

  1. Go Racepak web site and download & install the latest version of Datalink - www.Racepak.com/downloads. Take all the defaults except when you get to the screen asking what Racepak gear you have - check off what you have.
  2. If you have a V300sd re-install the security disk (details here...)
  3. Update the configuration with all the sensors in the car:
    1. Hook the laptop to the car.
    2. Start up datalink and load your configuration - Sportsman.RCG if you have a sportsman and V300_xxxx if you have a V300SD.
    3. Go to FILE/Default Config - now this config will always load when you start datalink
    4. Click on READ on the toolbar on the left
    5. You should get a message saying new sensors found - say no for now.
    6. you should have on your screen your new config with all your current sensors
    7. click on FILE/SAVE
  4. Your laptop is now ready for downloads.
  5. If you want to copy your your old runs from old to new laptop follow these steps (this takes some computer expertise - if you don't already know how to copy and paste files get help - dont call me when you are halfway tru and don't know what you did - just do it all from the start or get someonw to help you that knows computers):
    1. Get a USB thumb or flash drive from an office supply store. Put it into the old laptop and windows will pop up a discovery message - click on open folder to view files and then minimize that window.
    2. Navigate to your C drive - C: (sometimes OS C:)
    3. then to RacePakData
    4. then Sportsman or V300_xxxx
    5. Highlight the year(s) and right click/copy
  6. Activate the widow for the thumb drive and paste the folders.
  7. Reverse the copy process on the new laptop.



How to E-mail a Run

  1. Go into your E-mail system.
  2. Start a new e-mail to your intended recipient
  3. click on Attach or possibly Insert (frequently has a paperclip icon)
  4. If a choice comes up select file/attachment NOT pictures.
  5. Use the Browse function to navigate to Computer
    1. then C: (sometimes OS C:)
    2. then to RacePakData
    3. then if you have a Sportsman to Sportsman, If an IQ3 Drag then IQ3. If a V300SD to V300SD_NNN (your serial number)
    4. then to the year & track and run (so if you are familiar with it the path would be something like C:\RacePakData\Sportsman\2015\atco\Spatc010115Q1.rpk
  6. add any message then click Send

If your laptop can not access the internet you can copy the selected file to a USB memory stick or flash drive then go to another computer and e-mail the fire from the USB drive.

If you have a V300, V300SD, LDX you will have to give your security key to the recipient (unless it's Racepak & RP dealers.To Do that:

  1. Open Datalink
  2. Click on Security
  3. Click on Show/Edit Security Keys
  4. In bottom left of this new screen find your serial number like V300 5252
    To the right is your 10 digit security code
  5. You have to manually copy the number and enter it into an E-mail to him (Windows Copy & Paste does not work). You could send it a text message or simply read it to him as well.
    Also in the e-mail tell him the type (first Colum)
    The recipient has to do the same steps except at the top of the screen put your info in and click Add. He must add the type too.
    Click DONE



Change G-meter settings for reverse mount

  1. Go into Datalink
  2. right click on the Accell G meter
  3. in the top right hand corner of the box there will be a box labelled Specify Linear Conversion and it will have 4 numbers/boxes.
    now in the second box of Raw data value B where it defines what it will become put a - (negative symbol) before the number.
  4. Click on Send Configuration in the bottom right
  5. Clich in File / Save



Shock sensor setup

First right click on the shock sensor channel in question in your config.

In the top right box where this one says 8 that should match the full travel of your sensor - in inches.

Also the second box is the enable which is changeable once you highlight the Channel Mode.

If you do change anything click on Send Config (must be hooked to car).


How to get your Sportsman systemID

  1. Hook your laptop to the Sportsman & turn power on to Sportsman
  2. go into DataLink and open your config (usually SPORTSMAN.CFG)
  3. Click on the READ icon on the tool bar on the left (or Edit-Read V-net)
  4. Right-click on the Sportsman channel button
  5. Highlight the system ID line within the System Options box in the bottom left
  6. Your system ID will appear in a box on the right - in the example below : x1a4604
  7. To get a channel upgrade, you will need this and Product Version and Max Vnet channels allowed.


Machining a collar to a new size

  1. Use .040 spacers between halves (without the spacers the collars are not round. They measure true across the parting line)
  2. keep heat down as 200*F will hurt magnets
  3. if you remove magnets make sure you get south side facing out



How to measure for the DS collar

Factory yokes usually do not have a concentric spot. They need to be machined or replaced with an aftermarket yoke.