This page allows you to check and correct your software settings
when troubleshooting or installing software.
Now that you have your new dynamometer, take the time to understand the software.
With patience and practice, you will soon be an expert on it's operation. Then you can begin the best
part of dyno tuning, trying different combinations and parts in search of more power and torque.
Computer start up:
Turn on the SP1 processor box. Turn on computer.
Open the Sportdevices software by clicking on the Icon on the desktop.
Check that the SP1 connected symbol (green symbol at bottom center of screen) is displayed to allow processor to comunicate with computer.
Go to the Y axis box and click on the down arrow to open the torque selection box.
Take your mouse pointer and select the HP,FT*LBS. setting by clicking on the bottom setting.
Next, click on options and then advanced configuration. Check that the settings are correct and click OK at the bottom of the screen.
Press the F5 key on your keyboard, this will bring up the gauge screen . Enter the correct ratio for the type of motorcycle engine to be tested. (ratio box is located in the lower center of the gauge screen) Enter the weather conditions in the box provided. Next you may want to enter customer name, type of motorcycle and any notes about the bike or modifications.
To begin testing:
Testing should be done by the dyno operator, sitting on or in the vehicle to be tested. With the start /stop button wrapped around handle bar or steering wheel, the operator should start in first gear and slowly accelerate through the gears until the highest gear is reached that will not exceed 4,000 rollor rpm or 160 mph wheel speed. Press the start/stop button and the gauge screen will appear, while maintaining a constant 1,000 rpm rollor speed. Next, push the button again and at the same time slowly roll the throttle wide open to the throttle stop and hold until the desired rpm or rear wheel speed is reached. Then slowly roll off of the throttle and push the button again to stop the test. On most vehicles the rear brakes can be applied gently to help bring the rollor speed down safely.
Test ratio settings: Located at the lower center of the gauge screen. The test ratio is used to calculate torque readings and align rpm's along the bottom of graph screen. Every effort has been made to allow you to get a torque reading from most motorcycles and still keep the software and electronics affordable. After you do the test ratio setting a few times you will understand that the software wants to know two things:
1. What is the engine rpm and 2. What is the roller rpm in the gear that you are going to test.
If your test bike has a tachometer: Click on test ratio to bring up test ratio screen, the default setting in the rpm box is 6000. You may double click on the box and type in any rpm that you want. Look at the tach and determine the redline or max rpm that you will run the engine during full throttle testing.
Example: if you are testing sportbike that redlines at 12,000, just leave the 6,000 rpm setting in place. If you are testing a large Vtwin bike that redlines at 6,000, simply type in 3,000 in the rpm box. The rpm setting that you use should be 1/2 of max rpm. This will allow you to set the test ratio without running the engine to Maximum rpm. With test ratio screen open, start motorcycle and slowly accelerate up through the gears until you reach the gear that you will be using for your test. Watch the rpm reading on the motorcycle tachometer and slowly bring up the rpm's to the setting (3,000 or 6,0000) on test ratio screen and then press the red start/stop button. This will select your test ratio and you can begin testing from here.
If your test bike has no tach, but you can reach a spark plug wire: Attach the red rpm lead to the spark plug wire similar to using a timing light, next make sure the lead is plugged into SP1 data box. Start engine and let idle, use you mouse pointer to open rpm test window. Located on gauge screen just to the top right of the RPM dial. Click on this small window to open the different settings available and select each of the settings and observe rpm readings while the engine idles. Most bikes idle about 900-1100 rpm, so select a setting that displays this rpm. Next, run engine up through the gears as if you were crusing down the highway. In high gear, watch the tach on the computer screen to see if the rpm's appear to be correct for crusing. Now select the gear that you will be using for testing and slowly bring up the engine rpm's while observing the roller rpm's on the dial to the left of gauge screen. Example: 3,000 engine rpm might equal 1200 rpm roller speed. You will need this info to select the test ratio. Now you knowledge of motorcycles will have to be applied.
With the proper rpm factor selected and you are testing a Vtwin bike, simply go to the test ratio window and type in 3,000 rpm and accelerate slowly through the gears until the test gear is reached. Bring up the engine speed until the correct roller RPM (1200) is displayed and then press the red start/stop button. This will select the test ratio and you can begin testing.
If you test bike has no tach and no spark plug wire, such dirt bikes or street bikes with coil sticks:
These bikes will need to be tested in a rpm simulated mode. This is done by using your knowledge of this motorcycle to estimate the maximum rpm of the engine to be tested. Large Vtwins still can use the 6,000 rpm redline while other engines will have to be determined by you the operator. This knowledge is what separates you as a tuner from the amateurs. Many inline four engines from 600 to 1300cc will redline from 10,000 to 15,000 rpm's. Dirt bikes will usually redline from 10,000 to 13,500. Try to determine if the engine has a
rev-limiter installed before you begin your full throttle test. Now you need to make a full dyno run to maximum rpm. In the test gear, run engine to max rpm that you dare or until the rev-limiter is reached. Now, shut off the engine and look at the test. Select the dyno roller rpm setting at top left of screen to display maximum roller speed on the test. Example: If the max roller speed was 1900 rpm, divide by two to get 800 rpm roller speed.
Now, open test ratio window and run motorcycle in test gear to 800 rpm roller speed and press the red start/stop button and the software will select the test ratio and you can now begin testing.
Remember, HP and rear wheel speed/roller speed are not effected by the test ratio setting.
The test ratio only effects the torque and rpm reading. Most motorcycles will have a tachometer or a spark
plug wire for testing. When using the simulated torque readings, remember that you now have a torque reading to compare your tuning to. Dyno tuning is all about taking a reading at the rear wheel and trying to improve it. So if you make changes to increase HP and Torque, it will be displayed on your test runs.
Reprogramming the SP1 processor: If you should experience abnormal HP/Torque readings, or if you experience power problems to your facility it may be necessary to reprogram your box. To do this, select
options and then advanced configuration. Check that settings are still correct, make sure SP1 box is turned on and click the reprogram button located in the SP1 configuration section. Next, click Yes and then OK. Click on the OK button at bottom of screen to proceed. Also, count the number of gear teeth attached to the dyno roller and be sure that number is entered in the SP1 configuration section under advanced configuration before reprogramming box.
Displacement adjust: This software option is not used on the Dayton Dyno dynamometers. The option should not be checked and should be de-checked when re-installing the software or installing software on another computer.
ISO 1585, ISO2535 Option: This option is used to correct HP/Torque readings based on weather conditions and should be used. Be sure this option is checked under the options window.
Software settings
