Dynojet 198: Kart and ATV Dynamometers - Manual (Page 44)

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Making a Test Run
Dyno runs provide safe, reliable road testing right in the shop.
The dyno allows you to measure, record, and diagnose
performance problems quickly. The dyno combined with WinPEP
7 produces consistent, easily interpretable power graphs. Use the
following instructions to ensure repeatable and accurate
measurements.
1. Verify the vehicle is secured properly.
2. Place the vehicle in a low gear and release the dyno brake
using the hand held pendant.
3. Slowly accelerate the vehicle to 20 m.p.h.
4. Test the tachometer operation.
• Rev the engine. The gauges on the computer screen should
be moving. If the tachometer is moving but not registering
the correct RPM values, the number of degrees of
revolution of the crank shaft (the plug fires number) is
incorrect.
• Stop the vehicle, return to the MakeRun Configuration
dialog box, and enter the correct value for plug firing order.
5. Press the red brake button to apply 100% braking and slow
down the vehicle.
CAUTION: Using the vehicle’s rear brake to stop the drum at
speeds over 30 m.p.h. can severely over heat the rear brake parts.
Dynojet dynamometers with the air brake or eddy current brake
accessory can be used to slow the vehicle and drum to a full stop
at any speed. The vehicle’s brake should be used in an emergency
stop situation only.
6. Shut the engine off and put the vehicle in gear (manual
transmission) or neutral (automatic transmission).
7. Set the vehicle’s parking brake and leave the dyno brake on.
8. Perform a final inspection.
• Verify the drive tire’s alignment on the dyno drums.
• Make any adjustments to the tie-down straps as needed.
• Perform any other safety checks that you deem appropriate
to your particular situation.
You are now ready to make a high speed run on the dyno. Refer to
your WinPEP 7 User Guide for more detailed instructions.