DRAG-Pro N2O For ELECTRONIC TRACTION CONTROL USER MANUAL TELEPHONE 828.645.1505 FAX 828.645.1525 WWW.MORETRACTION.
Disclaimer……………….....................2 Introduction……………................... 3 How Does It Work………………………. 4 Installation………………................. 6 Testing……………………………............8 Sensor Test:…….........................................8 RPM Window Test:……………........................8 Forced Activation Test:…………….....…......9 Tuning………………………………..........11 Configuring……………......................15 Trigger Count: (default= 8)………………….15 Starting RPM: (default 1500 rpm)………...15 ending RPM: (default 9900 rpm)…………….
DISCLAIMER This product is sold "as is." No warranties express or implied, including any implied warranty of merchantability and any implied warranties of fitness, are made with respect to any products manufactured, sold or supplied by Davis Technologies LLC ("DAVIS"). Davis shall not in any event be liable for incidental, consequential or punitive damages of any nature whatsoever, including personal injury and lost profits.
Introduction We would first like to thank you for your purchase of our system. We believe it is the best system available to you on the market today. This system balances effectiveness with ease of installation, broad field of uses, and cost. As with all technical devices such as engines, shocks, carburetors, clutches etc., the product’s performance is based largely on your ability to use it properly.
How Does It Work? This system differs from other systems that you may be familiar with because it does not use any external wheel or ground speed sensors. Instead it uses a patented method that simply monitors engine speed or driveline speed to determine when wheel spin occurs. This process is a very simple way to effectively detect wheel slippage and evoke a means of correcting the slippage. In this case reducing the Nitrous Injected degrades the engine performance.
them. The driver simply has to accept the fact that the microprocessor in the system is much faster than his/her reflexes. In fact the system detect wheel spin in 1/100th of a second, and the microprocessors used can process 5 million commands a second!! This system is not simply a few lines of code added to an existing fuel injection or ignition system, and called traction control.
Installation Installation of the system is very simple. It is very important to make all connections correctly. Improper installation could result in poor system performance or damage to the unit. Keep all wires away from any spark plug wires and coils or other sources of electrical noise and heat. The unit should be mounted away from any sources of electrical noise or high heat. It can be easily mounted using the mounting flanges on each side. Make the connections as follows: 2 Pin Connector (power in) 1.
If another type of sensor is used, check with the manufacturer to determine connections. (IMPORTANT--The sensor must be capable of 15Khz resolution!!) 3 Pin Connector (Input/Output) 1. Connect the pin marked “A” (BLUE wire) to the Trans Brake wire. (Coming from the trans brake switch) 2. Connect the pin marked “B” (YELLOW wire) to the Nitrous Controller “Input 2” (RED wire). 3. Connect the pin marked “C” (PINK wire) to the data system or a LED to indicate when the system is making corrections.
Testing After installation it is recommended that you test the system. To do so please follow these instructions step by step. (Temporarily set the “% Cut” dial to 100 and “Ramp In” dial to 9 for testing) Sensor test: This test is useful for setting up the trigger ring and sensor if used. 1. Set the “M” dial to “0” 2. Rotate the RPM trigger- The LED will flash each time a trigger is sensed. The unit is not active in any other way and no corrections will be made.
Forced Activation Test: This test is useful to check both stages of cut. The progressive controller must be configured prior to executing this test. (Activate the “Traction Control” option in the progressive controller’s software, and set the ramp to 100%, and uncheck the “RPM Connected” box for this test). This is also useful to test the connections to a data system if used. 1. Set the dial to any setting between 1 to 8. 2. Turn “on” the power to the unit, the LED should begin to flash. 3.
show the firmware version. Note: Be sure to restore settings that were changed in the controller software to race settings after test is complete! If unit does not pass all test, recheck all connections and test again.
Tuning Traction Control Parameters: Different tracks, cars, conditions, etc. may require different settings for the system to function effectively. The dials on the unit is used for this setting. The values are referred to as Threshold “T”, and Mode “M”. The TM-4000-Drag Pro incorporates two different methods to control wheel spin.
than zero. This method simply looks for a threshold of acceleration change to be exceeded and the outputs will be triggered. The higher the number the more sensitive the system is. A good starting point is 4. Valid settings for threshold are 1-9. (When using this method the Mode setting has no effect on the system, with the exception of Mode 0, or Mode 9). Starting RPM is a user adjustable setting that allows the racer to set the point at which the unit begins making corrections.
correction made. Null Mode 0- Traction Control makes corrections in the normal manor. Null Mode 1- Traction Control only makes Step 1 (small) corrections within the set RPM range. Null Mode 2- Traction Control will not make any corrections within the set RPM range. The Buffer setting is another feature that can be used to fine tune the system. The buffer sets the number of consecutive errors required to cause a correction. Buffer 0 will react to each error in acceleration.
Nitrous Control Parameters: The % CUT is the setting that controls the amount of the Nitrous Oxide that will be cut. This is the percent of N20 on the stage that the progressive controller is connected to only. The percent that the stage is cut can be adjusted from 10% to 100%, in 10% increments. Once the slip condition is corrected, the N20 is ramped back in until the original progressive ramp is re-established.
Configuring Trigger Count: (default= 8) The unit must be configured for the number of counts it will receive per revolution of the driveline. Once set the value will remain until changed by the user. To change the value, follow these steps. 1. Set the “Mode” dial to “4” 2. Hold down the “Test” button 3. Turn the power On 4. While holding the “Test” button down, move the dial to the desired number of triggers divided by two. (example- 8 triggers/2=4) 5. Release the “Test” button.
2. Hold down the “Test” button 3. Turn the power On 4. While holding the “Test” button down, move the “Mode” dial to the first digit of the desired Starting RPM. (example- 1500rpm - first digit=1 / 3000rpm - first digit =3) 5. Release the “Test” button, The led will flash to show the value has been accepted. 6. Now move the “Mode” dial to the second digit of the desired Starting RPM, then press and release the “Test” button. (example- 1500rpm - sec. digit=5 / 3000rpm sec.
changed by the user. The RPM is set in 100 rpm increments, (example 9900 rpm, divided by 100= 99). To change the Ending RPM value, follow these steps. 1. Set the “Mode” dial to “9” 2. Hold down the “Test” button 3. Turn the power On 4. While holding the “Test” button down, move the “Mode” dial to the first digit of the desired Ending RPM. (example- 9900rpm - first digit=9 / 8500rpm - first digit =8) 5. Release the “Test” button, The led will flash to show the value has been accepted. 6.
Null Mode: (default= 0) The Null Mode sets how the Traction Control will make corrections in the Null Zone. To set the Null Mode, follow these steps. 1. Set the “Mode” dial to “6” 2. Hold down the “Test” button 3. Turn the power On 4. While holding the “Test” button down, move the “Mode” dial to the desired Null Mode value. 5. Release the “Test” button, The led will flash to show the value that the Null Mode is now set to. Valid settings are 0-2.
3. Turn the power On 4. While holding the “Test” button down, move the “Mode” dial to the first digit of the desired Null Low RPM. (example- 4000rpm - first digit=4 / 3500rpm - first digit =3) 5. Release the “Test” button, The led will flash to show the value has been accepted. 6. Now move the “Mode” dial to the second digit of the desired Null Low RPM, then press and release the “Test” button. (example- 4000rpm - sec. digit=0 / 3500rpm sec.
2. Hold down the “Test” button 3. Turn the power On 4. While holding the “Test” button down, move the “Mode” dial to the first digit of the desired Null High RPM. (example- 6000rpm - first digit=6 / 7200rpm - first digit =7) 5. Release the “Test” button, The led will flash to show the value has been accepted. 6. Now move the “Mode” dial to the second digit of the desired Null High RPM, then press and release the “Test” button. (example- 6000rpm - sec. digit=0 / 7200rpm sec.
3. Turn the power On 4. While holding the “Test” button down, move the dial to the desired buffer value. 5. Release the “Test” button, The led will flash to show the value that the buffer is now set to. Valid settings are 0-3. (Buffer 2= 2 blinks) (zeros are indicated by shorter blinks) Sample Rate: (default= 3) The Sample Rate can be set to change the sensitivity of the unit. This should only be changed under the advice of tech support. Valid settings are 1-5.
Checking Settings: The current setting for the different adjustments can be verified at any time using the Test button and the LED. This process is divided into 3 sections. Standard, Advanced and Null Zone. The different sections are chosen by the position by the dial when the verification is started. The Standard values can be verified at any time by following these steps. 1. Turn the power “On” 2. Set “Mode” dial any position from 1-7. 3. Press the “Test” button and HOLD DOWN. 4.
The Advanced values can be verified at any time by following these steps. 1. Turn the power “On” 2. Set “Mode” dial to “OFF”. 3. Press the “Test” button and HOLD DOWN. 4. First, the value of the Starting RPM is shown. The LED will blink for the first digit followed by a short pause, then the LED will blink for the second digit.(1500 RPM = 1,5 Blinks) (zeros are indicated by shorter blinks). 5. After a pause, The value for the Ending RPM is shown.
The Null Zone values can be verified at any time by following these steps. 1. Turn the power “On” 2. Set “Mode” dial to “9”. 3. Press the “Test” button and HOLD DOWN. 4. The LED will Flash the current Null Mode setting, followed by a pause. (Null Mode 0- Traction Control makes corrections in the normal manor. Null Mode 1- Traction Control only makes Step 1(small) corrections. Null Mode 2- T/C will not make any corrections within the set range). 4. Next, the value for the Null Low RPM is shown.
Factory Reset All settings can be restored to Factory Defaults at any time by following these steps. 1. Set the “Mode” dial to “5” 2. Hold down the “Test” button 3. Turn the power On 4. While holding the “Test” button down, move the “Mode” dial to the “Off“ position. 5. Release the “Test” button, The LED will flash rapidly to indicate the Factory Settings have been restored.
Appendix A Another advantage of these systems is that they are actually able to detect wheel slip better than most wheel speed sensor based systems. The reason for this is that our systems monitor the rotation of the driveline. With 8 triggers on the driveline you can measure slip within 1/8 of a rotation. Now factor in a 5:1 final drive (rear end) ratio and tire rotation can be measured within 1/40 of a turn (that is about 2-3 inches on most tires).
RING & SENSOR If using a Davis Technologies Ring & Sensor, use the following installation guidelines. Sensor set to .
