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Chapter 20: Trouble Shooting & FAQ’s
Trouble Shooting- Common Issues (cont.)
Brake dyno shows significantly lower power readings when ramping as oppose to steady state testing.
Inertia of dyno provides significant losses that should be accounted for by setting an Inertia value in “Setup/Hardware”
and selecting “Brake Inertia Correction” in in “Setup/Hardware” also. This is particularly noticeable when testing lower
powered vehicles such as bikes, the inertia of the brake dyno can be as high as many inertia dyno.
Low readings when using calculated inertia value.
It is more than likely the expectations are higher than the ability. Be wary of inflated power figures that are used within
the industry (unexplainable correction factors) or a lack of understanding of the test procedure used to gather the
manufacturer’s data. If you need to comply with a particular norm then it is known for users to ‘trim’ their calculated
inertia value to align the test numbers with expectations (we don’t suggest this but it is certainly common practice)
RPM gauge not displaying a reading.
Rotation of the dyno shaft/roller/flywheel above a minimum speed is required for the data to be transmitted if the RPM
source is derived from the main DYNertia3 sensor. Run the vehicle (drive the dyno) to confirm.
Certain software options are ‘greyed out’ and unable to activate.
Some software features are only enabled when other choices are active. For example, the dyno may need to be in
‘Brake’ mode rather than ‘Inertia’ for certain functions (such as ‘Point by Point’ steady state testing mode)
How do I create and rename folders and files for my runs?
Folders are created within our ‘DYNertia3 File Explorer’; Windows Explorer can also be used just like with any other
program.
When I go to view graphs a warning about not being able to load the trace appears, what does this mean?
If there is no actual data saved in the file (Run not performed) or the file has been renamed or relocated then obviously
DYNertia3 will have problems finding and opening it. If DYNertia3 can’t open all of the files selected for graphing it will
clear all so that you can re-select from their new location. If only some test Runs (not all) won’t load then just reload the
altered ones again, selecting from the new location. Moving/renaming the ‘default’ folder being used should be avoided.
The DYNertia3 screen does not fill the whole PC’s screen.
The DYNertia3 Window does not size itself to the PC screen, if you wish you can adjust your PC screen resolution to
best suit (Program Window size is1024 x 768)
When In DYNertia3 File explorer I cannot get a file to load into graph screen.
The usual issue is not ‘Left Clicking’ on a file to highlight it and then ‘Right Clicking’ to actually load it into the Graph
Window.
Gauge/ trace scaling is not ideal
Please see the menu choices under “Scales“ to set the gauges and charts to suitable scale ranges.
Note: When the gauges are used for analysing graphs (showing the value at the cursor) their scale is automatically
selected based on the scales used in the GRAPH Window, not this setting.
Consider the start and end settings you have used in the ‘Record Settings’ field in the main DYNO Window. You can
also see the chapter on ‘Loading/Viewing Files’ and ‘Trim, Merge & Join Runs’ for information on adjusting scales and
permanently changing the tests Run start and end points.
Certain Screens appear on top of others
DYNertia3 is optimal with two monitors; many Windows will be displayed across to the second monitor (if fitted). If
viewing with a single monitor then please note the PC’s taskbar (at bottom of screen usually) shows what Window are
open and you can select between them from there.
After a ’crash’ of my PC I lose settings
DYNertia3 saves all of its settings when the program is shut down, not necessarily when an individual window is closed.
We suggest during / after you do your initial setup you close DYNertia3 down so that it saves the settings fully.
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