Details
Category: Traction Control

 

Traction Control

TMS Drag Pro 

How does it work?

The Non Self-Learning systems, like our Sportsman series, periodically compares the rate of acceleration of the driveshaft to an Adjustable Fixed Rate (AFR), known as Threshold.  If the DS RPM rate of change is in excess of that Threshold, then a correction is made.  The comparison is made every 1/8 of a turn of the driveshaft.

Basically, this Patented system looks for spikes in DS RPM that are caused by wheel slip.  If these spikes are large enough, then a correction is made, reducing the slip.

By adjusting the Threshold, the user can tune the system to correct larger slips, while not reacting to smaller, harmless, slips.  This means the user does not have to figure out the desired DS/Engine RPM and build a preset “Dot Plot” (anybody got a crystal ball?).

A typical 1/8th mile car turns the drive shaft about 300 times in a 660 ft. run. At 8 triggers per rev, that would be like building a “Dot Plot” w/ 2400 dots, and ¼ mile cars turn the drive shaft about 550-600 times in 1320 ft. run.  At 8 triggers per rev, that would be 4400-4800 dots.

Self-Learning systems, such as our Lite and Pro series, compare the rate of acceleration of the drive shaft to a calculated threshold value that is constantly updated based on the average of the previous measurements. This update occurs on every drive shaft revolution. So, if the last 1/8 of a turn of the drive shaft is faster than the average of the last full revolution, then a slip is detected. Through this very advanced Patented process, the system constantly accounts for track conditions, tire condition, etc. to constantly update the internal settings. These settings are updated as many as 800 times a second to keep the unit calibrated to exactly the right settings regardless of changing conditions.

Basically, the system learns the average rate of acceleration of the drive shaft, and if there is a sudden spike in RPM above that learned rate, then a correction is made.   With the Self-Learning feature, the user doesn’t have to try to figure out the DS RPM rate of change and set a “Threshold”, the system does it for you, every drive shaft revolution!

The user does have an adjustment referred to as “Mode” that sets the overall sensitivity of the system to make a correction based the extent of the tire. By adjusting the Mode, the user can tune the system to correct larger slips, while not reacting to smaller, harmless, slips. 

 
The biggest difference in our systems is the Speed and the Self-Learning capabilities.  Other systems “brag” that their TC works 10 times a second—our older systems worked 20 times a second, and while it would help “save a run”, it just was not fast enough to help you go faster.

The new systems (since Jan 2009) work every 1/8th  of a turn of the driveshaft. At 3000 RPM DS speed, a very critical area for tire slip, it measures the DS RPM 400 times a second, at 6000 DS RPM it measures 800 times a second! The system then processes those measurements 50 times a second (typically), and as fast as 100 times a second, to calculate acceleration change (DS RPM Delta). (We can actually use up to 30 triggers, which would be 1500 times a second at 3000 DS RPM, and 3000 times a second at 6000 DS RPM !!)

Another thing to note, Traction Control is all, we at Davis Technologies, do. Our units utilize 2 high speed processors to measure and calculate drive shaft data, and nothing else. Our patented systems are not simply a few lines of code thrown into an existing engine management system and called traction control. This is all we do, and all we have done for the past 12 years!

With tools like the simulator, which took nearly 2 years to develop, and the info we gather from helping hundreds of teams, we continue to focus our attention on nothing but traction control, and making our products better. Our motto around here - “The Better It Works On The Track, The More Likely They Are To Tell Their Friends About Us”

 
 

 

Details
Category: Traction Control

TMS Drag Sportsman MAP

Key Benefits: 
  • Adjustable Fixed Rate Of Acceleration (AFR)
  • Lower E.T. / More Consistent
  • Extremely Fast-Reacts Within 1/8 Of A Turn Of The Driveshaft
  • Single Retard Level- 0-5 volt MAP Output
  • Adjustable Starting RPM
  • Compatible w/ Most Data Systems
  • Compact size- 1.3" x 1.3" x 4.5"    (5oz.)
  • Can Easily Be Moved To Other Chassis
  • Very Affordable
  • Non Self-Learning
The TMS-Drag-Sportsman-MAP is our entry level Traction Control system.  This Non Self-Learning system monitors the drive shaft speed and reacts to any sudden increase in that speed.  The user can adjust the threshold of over acceleration that will cause a correction (AFR). 
 
The Non Self-Learning TMS-Drag-Sportsman-MAP is great for racers looking for a little help on the gear change, or when a stage of nitrous or boost comes in, or just wanting more consistency and lower Elapsed Times.
 
The TMS-Drag-Sportsman-MAP is compatible with most drag racing ignitions systems and timing accessories in use today. It is also compatible with the new AMS-2000 boost controllers.
 
The TMS-Drag-Sportsman-MAP is designed for the budget minded racer who wants the same advanced technology used by top race teams around the world, but does not need all of the advanced features of a Self-Learning unit.
 
The TMS-Drag-Sportsman-MAP is a great way to started with traction control without having to buy a more expensive  Self-Learning Lite or Pro units.  The TMS-Drag Sportsman-MAP unit can be upgraded to at any time to the more advanced units for the price difference.
 
Self-Learning (see below for explanation) units like the TMS-Drag-Lite-MAP or TMS-Drag-Pro-MAP automatically adjust to the continually changing conditions as you go down the track.
 
Price: $1995.00
 
*May not be legal in some series
 

Self Learning

Self-Learning systems, such as our Lite and Pro series, compare the rate of acceleration of the driveshaft to a calculated threshold value that is constantly updated based on the average of the previous measurements. This update occurs on every driveshaft revolution.
 
So, if the last 1/8 of a turn of the drive shaft is faster than the average of the last full revolution, then a slip is detected.
 
Through this very advanced Patented process, the system constantly accounts for track conditions, tire condition, etc. to constantly update the internal settings. These settings are updated as many as 800 times a second to keep the unit calibrated to exactly the right settings, regardless of changing conditions.
 
Basically, the systems learns the average rate of acceleration of the driveshaft, and if there is a sudden spike in RPM above that learned rate, then a correction is made. 
 
With the Self-Learning feature, the user doesn’t have to try and figure out the DS RPM rate of change and set a “Threshold”, the system does it for you, every driveshaft revolution!
 
The user does have an adjustment referred to as “Mode” that sets the overall sensitivity of the system to make a correction based on the extent of the tire slippage. By adjusting the Mode, the user can tune the system to correct larger slips, while not reacting to smaller, harmless, slips.
 
The biggest difference in our systems is the Speed and the Self-Learning abilities. Other systems “brag” that their TC works 10 times a second—our older systems worked 20 times a second, and while it would help “save a run”, it just was not fast enough to help you go faster.
 
The new systems (since Jan 2009) work every 1/8th of a turn of the driveshaft. At 3000 RPM DS speed, a very critical area for tire slip, it measures the DS RPM 400 times a second, at 6000 DS RPM it measures 800 times a second! 
 
The system then processes those measurements 50 times a second (typically), and as fast as 100 times a second, to calculate acceleration change (DS RPM Delta). (We can actually use up to 30 triggers, which would be 1500 times a second at 3000 DS RPM, and 3000 times a second at 6000 DS RPM !)
 
Details
Category: Traction Control

TMS Drag Pro MAP

TMS Drag Pro MAP

Key Benefits: 

  • Self-Learning-Automatically Adjusts For Changing Conditions
  • Multiple Retard Levels- 0-5 MAP volt Output
  • Enhanced Adjustability
  • Adjustable Starting RPM
  • Adjustable Ending RPM
  • Adjustable Null Zone
  • Lower E.T. / More Consistent
  • Extremely Fast-Reacts Within 1/8 Of A Turn Of The Driveshaft
  • Compatible w/ Most Data Systems
  • Compact size- 1.3" x 1.3" x 4.5"    (5oz.)
  • Can Easily Be Moved To Other Chassis
  • Affordable
  • Configure w/ Optional Serial Interfaces below

 

The TMS-Drag-Pro-MAP is our most advanced Self-Learning Traction Control system. By monitoring the average rate of acceleration of the drive shaft, and reacting to any sudden increases in that rate.  The TMS-Drag-Pro-MAP will automatically adjust to changing conditions, keeping the internal settings at optimal levels.  The user can adjust the overall sensitivity of unit to achieve the desired results.

The TMS-Drag-Pro-MAP is designed for the pro level racer who wants the most advanced Self-Learning technology, combined with enhanced adjustability and multi stage corrections to cut power more precisely than a single stage unit.

These units are perfect for racers looking for the unmatched precision of our Self-Learning units to get more aggressive with their tune ups, utilizing all of the adjustability that the TMS-Drag-Pro-MAP has to offer.

The TMS-Drag-Pro-MAP is compatible with most drag racing ignitions systems and timing accessories in use today. It is also compatible with the new AMS-2000 boost controllers.

The Drag-Pro-MAP is simple the best, most advanced traction control on the market today ! 

Self-Learning units like the TMS-Drag-Lite-MAP or

TMS-Drag-Pro-MAP automatically adjust to the continually changing conditions as you go down the track.

Price: $4495.00

*May not be legal in some series

Traction Control Panel

The Software serial interface is used to adjust advanced tuning features of the traction control system.

These tuning features can be used to fine tune the system to exactly what the user desires. 

On a Drag Racing system, this includes being able to tune the Drive Shaft RPM at which the system becomes active, as well as the Drive Shaft RPM at which the system can be turned off.

The user can also define a "Null Zone".  The Null Zone is a window of  DS RPM in which the unit can be set to reduce a lesser amount of power, or make no correction at all.

The user can also tune the length of corrections to fine tune the system to what works best on their vehicle.

The software based interface is priced at $149.95, and easily installs on your computer.  The Traction Control is connected to the computer via a serial cable or through a secure wireless Bluetooth connection.  Tuning is achieved through a few simple mouse clicks.

Screen shots are at the bottom of this page.

Click here to download or to install the setup program

Hand Held Programmer

The Handheld serial interface is used to adjust advanced tuning features of the traction control system.

These tuning features can be used to fine tune the system to exactly what the user desires.

On a Drag Racing system, this includes being able to tune the Drive Shaft RPM at which the system becomes active, as well as the Drive Shaft RPM at which the system can be turned off.

The user can also define a "Null Zone".  The Null Zone is a window of  DS RPM in which the unit can be set to reduce a lesser amount of power, or make no correction at all.

The Handheld interface is priced at $299.95, and may be more convenient at the track.

The Traction Control is connected to the Handheld via a small cable or through an optional  secure wireless Bluetooth connection. (Additional $150.00)

The small size, simple keypad, and backlit display make changes quick and easy.

 

 

Null Zone

The Null Zone is a window of DS RPM in which the unit can be set, to reduce a lesser amount of power, or make no correction at all.

The Null Zone is useful for fine tuning the amount of power reduced at different points on the race track. While you may need to cut 100 HP in the early part of a run, that same amount of reduction may be too much in the later part of the run. 

By using the Null Zone to tune the system, the user can keep the amount of retard optimized to where the vehicle is on the track.

Another example of how the Null Zone can be implemented is on a clutch car like a Top Fuel Dragster. At a DS RPM of say 6000 RPM, As the clutch locks up and the drive shaft and engine begin to couple one to one, the tires will often start to slip.  Reducing power at this point will cause the clutch to fully lock prematurely and actually cause tire spin.

Using the Null Zone to limit the amount of power reduced, or prevent reduction completely between 5700-6200 RPM can avoid this situation altogether.

Serial Interface

The serial interface is used to adjust advanced tuning features of the traction control system.

These tuning features can be used to fine tune the system to exactly what the user desires.

On a Drag Racing system, this includes being able to tune the Drive Shaft RPM at which the system becomes active, as well as the Drive Shaft RPM at which the system can be turned off.

The user can also define a "Null Zone".  The Null Zone is a window of  DS RPM in which the unit can be set to reduce a lesser amount of power, or make no correction at all.

The software based interface is priced at $149.95, and easily installs on your computer. The Traction Control is connected to the computer via a serial cable or through a secure wireless Bluetooth connection. Tuning is achieved through a few simple mouse clicks.

The Handheld interface is priced at $299.95, and may be more convenient at the track. The Traction Control is connected to the Handheld via a small cable or through a secure wireless Bluetooth connection.*

The small size, simple keypad, and backlit display make changes quick and easy.

While these interfaces are not necessary, they do make getting the maximum potential out of your Traction Control much easier!

Self Learning

Self-Learning systems, such as our Lite and Pro series, compare the rate of acceleration of the driveshaft to a calculated threshold value that is constantly updated based on the average of the previous measurements. This update occurs on every driveshaft revolution.

So, if the last 1/8 of a turn of the drive shaft is faster than the average of the last full revolution, then a slip is detected.

Through this very advanced Patented process, the system constantly accounts for track conditions, tire condition, etc. to constantly update the internal settings. These settings are updated as many as 800 times a second to keep the unit calibrated to exactly the right settings, regardless of changing conditions.

Basically, the systems learns the average rate of acceleration of the driveshaft, and if there is a sudden spike in RPM above that learned rate, then a correction is made. 

With the Self-Learning feature, the user doesn’t have to try and figure out the DS RPM rate of change and set a “Threshold”, the system does it for you, every driveshaft revolution!

The user does have an adjustment referred to as “Mode” that sets the overall sensitivity of the system to make a correction based on the extent of the tire slippage. By adjusting the Mode, the user can tune the system to correct larger slips, while not reacting to smaller, harmless, slips.

The biggest difference in our systems is the Speed and the Self-Learning abilities. Other systems “brag” that their TC works 10 times a second—our older systems worked 20 times a second, and while it would help “save a run”, it just was not fast enough to help you go faster.

The new systems (since Jan 2009) work every 1/8th of a turn of the driveshaft. At 3000 RPM DS speed, a very critical area for tire slip, it measures the DS RPM 400 times a second, at 6000 DS RPM it measures 800 times a second! 

The system then processes those measurements 50 times a second (typically), and as fast as 100 times a second, to calculate acceleration change (DS RPM Delta). (We can actually use up to 30 triggers, which would be 1500 times a second at 3000 DS RPM, and 3000 times a second at 6000 DS RPM !!)

 

Screen Shots

"Main" Screen

 

"Main" Screen - Advanced View

 

 

"More" Screen

 

 

"More" Screen - Advanced View

 

 

"Null" Screen 

 

 

"Admin" Screen

 

 

Copyright © 1999-2011 Davis Technologies. All rights reserved.

Information in this document is subject to change without notice.

Other products and companies referred to herein are trademarks or registered trademarks of their respective companies or mark holders.

Any components shown are for illustration or instructional purposes only. 

Davis Technologies, llc. is not affiliated or endorsed by any other ignition manufacture.

 

MSD® , HVC™ and Pro Mag® are registered trademarks of Autotronic Controls Corporation. 

RacePak® is a registered trademark of Competition Systems Inc.

FAST™ is a registered trademark of Fuel Air Spark Technology.

Bluetooth™ is a registered trade mark of Bluetooth Special Interest Group.

 
Details
Category: Traction Control

TMS Drag Lite MAP

 
Key Benefits: 
  • Self-Learning-Automatically Adjusts For Changing Conditions
  • Lower E.T. / More Consistent
  • Extremely Fast-Reacts Within 1/8 Of A Turn Of The Driveshaft
  • Single Retard Level- 0-5 volt MAP Output
  • Adjustable Starting RPM
  • Compatible w/ Most Data Systems
  • Compact size- 1.3" x 1.3" x 4.5"    (5oz.)
  • Can Easily Be Moved To Other Chassis
  • Affordable
The TMS-Drag-Lite-MAP is our most affordable Self-Learning Traction Control system. By monitoring the average rate of acceleration of the drive shaft, and reacting to any sudden increases in that rate.  the TMS-Drag-Lite-MAP will automatically adjust to changing conditions, keeping the internal settings at optimal levels.  The user can adjust the overall sensitivity of unit to achieve the desired results.
 
The TMS-Drag-Lite-MAP is designed for the budget minded racer who wants the same advanced Self-Learning technology used by top race teams around the world, but does not need all of the advanced tuning features of a TMS-Drag-Pro-MAP.
 
The TMS-Drag-Lite-MAP is compatible with most drag racing ignitions systems and timing accessories in use today. It is also compatible with the new AMS-2000 boost controllers.
 
These units are perfect for racers looking for the unmatched precision of our Self-Learning units to get more aggressive with their tune ups, or just a little help on the gear change, or when a stage of nitrous or boost comes in.
 
The TMS-Drag-Lite-MAP is a great way to get the advantages of a Self-Learning unit, without having to buy the top of the line TMS-Drag-Pro-MAP unit.  The TMS-Drag-Lite-MAP unit can be upgraded to at any time to the more advanced TMS-Drag-Pro-MAP units for the price difference.
 
Self-Learning units like the TMS-Drag-Lite-MAP or
TMS-Drag-Pro-MAP automatically adjust to the continually changing conditions as you go down the track.
 
Price: $2995.00
 
*May not be legal in some series

 

Self-Learning

Self-Learning systems, such as our Lite and Pro series, compare the rate of acceleration of the driveshaft to a calculated threshold value that is constantly updated based on the average of the previous measurements. This update occurs on every driveshaft revolution.
 
So, if the last 1/8 of a turn of the drive shaft is faster than the average of the last full revolution, then a slip is detected.
 
Through this very advanced Patented process, the system constantly accounts for track conditions, tire condition, etc. to constantly update the internal settings. These settings are updated as many as 800 times a second to keep the unit calibrated to exactly the right settings, regardless of changing conditions.
 
Basically, the systems learns the average rate of acceleration of the driveshaft, and if there is a sudden spike in RPM above that learned rate, then a correction is made. 
 
With the Self-Learning feature, the user doesn’t have to try and figure out the DS RPM rate of change and set a “Threshold”, the system does it for you, every driveshaft revolution!
 
The user does have an adjustment referred to as “Mode” that sets the overall sensitivity of the system to make a correction based on the extent of the tire slippage. By adjusting the Mode, the user can tune the system to correct larger slips, while not reacting to smaller, harmless, slips.
 
The biggest difference in our systems is the Speed and the Self-Learning abilities. Other systems “brag” that their TC works 10 times a second—our older systems worked 20 times a second, and while it would help “save a run”, it just was not fast enough to help you go faster.
 
The new systems (since Jan 2009) work every 1/8th of a turn of the driveshaft. At 3000 RPM DS speed, a very critical area for tire slip, it measures the DS RPM 400 times a second, at 6000 DS RPM it measures 800 times a second! 
 
The system then processes those measurements 50 times a second (typically), and as fast as 100 times a second, to calculate acceleration change (DS RPM Delta). (We can actually use up to 30 triggers, which would be 1500 times a second at 3000 DS RPM, and 3000 times a second at 6000 DS RPM !!)
 
 
Details
Category: Traction Control

Traction Control