Using your

Inertia Dyno

The Datamite system comes with excellent detailed instructions on how to hook up and run the Datamite system, follow them closely. Since these instructions are include with the Datamite we will not go into great detail about them.

Adapting the Datamite to the dyno...

Magnets and Wheel speed pickups

Only one pickup is required for the flywheel however we are presently using both channels 2 and 3 in order to assure a clean, noise-free signal. After a run is made if you find that the channel 2 data is noisy you can switch to channel 3 from within the software. Only one of the magnets is needed, epoxy it to the side of the flywheel near the outer edge (accuracy increases as you move the magnet farther from the flywheels center) and attach the pickup to the dyno frame according to the Datamite instructions to ensure good signals.

Inductive pickup (IPU)

Connect this to the Datamite harness according to the instructions. Mount the IPU box to the frame of the dyno. Use tie-raps to attach the purple pickup wire to the spark plug wire just like a Digatron pickup.

1. Do not remove the spark plug wire to kill the motor, the spark will take the easiest path to ground which will be through the Datamite, install a kill switch wire instead.

2. Keep the cut end of the wire away from the spark plug, may want to put some heat-shrink over it also.

3. Unplug the serial download cable when making a run, this will not protect the Datamite, but will protect your computer from errant signals.

We've not had any problems since following these guidelines.

Update FEB. 2001
 Performance Trends now has an "optical isolator" that hooks up in series with the serial port download cable, which will prevent any stray voltage spikes from getting into your computer. Well worth the investment.......

This section was used to go into a long explanation of how to "lie" to the computer to make it think that the dyno was actually a moving vehicle, However since the "Dyno" version is now available, this procedure is no longer needed.
I will not do any explaining of how the software is actually used as the manuals supplied with the system are VERY good and walk you right through the process with very little effort.
If you should come up with any questions,pleasse feel free to contact TDKMotorsports or Performance Trends.

Finally you're ready for the simplest and most exciting part of the whole deal, actually doing a dyno "run". If you've done everything correctly up to this point, all should go well.
There is a bit of technique to this, and you will need to make a few practice runs before you get the "hang" of it.

Start the engine, and warm to operating temperature.

Slowly raise the engine rpm to bring everything up to speed and let the clutch lock up.

Hold the rpm steady, push the "clear memory' button on the Datamite "control panel" this will clear all data in memory and start the recording.

Open the throttle completely and allow the engine to accelerate to the maximum rpm you wish to test

Close the throttle, push the "record" button again to stop the recording. (The record button is used to start and stop recording without clearing the memory, allowing you to record several "runs" before downloading them to the computer)

Apply the brake to stop the flywheel and shut off the motor.

Now you will select "get data" on the computer, the computer downloads the information from the Datamite recording module.

At this point you can process the data to get the actual Hp/Tq, and any other information you would like. All the data from each "run" is stored in the computer, allowing you to extract any of it at a later date if needed. All of this sounds very complicated, however after you are familiar with how to do it, the whole process only takes only a couple minutes to get the "hard numbers" from each "run".