Dyno Tech Talk about Dynamometers & Testing

(603) 226-DYNO

Interesting dynamometer technical articles and tips from our support newsletters, white papers, and various other sources.

       "If suggest other subjects to be covered, just send us an e-mail."

Dyno Tech Talk is a compilation or copyrighted material, however, other relevant web sites and forums are welcome to link to this index page.

DYNOmite "News" back issues (the source for several of the Tech Talk subjects below) may be viewed online. You'll need (the free) Adobe Acrobat Reader installed on your PC to open, read, or print these files.

Note: These quarterly newsletters are sent to all DYNOmite owners.

AFR Correction Formulas - Read about adjusting AFR Module readings for the effects of pressure and fuel type.

Average Performance - Dynamometer techniques to increase an engine's total "area under the curve" horsepower.

"Black Box" Recorder - Feature to recover test data - even when you have forgotten to record the test!

Cell Construction - Read tips and suggestions on planning and constructing sound dampened test cells.

 Cell Design - Important basics to consider when designing an engine or chassis dynamometer test cell.

Cloning Track Data - Read about how to create automated dynamometer tests from on-board lap recorder data.

 Corrected Horsepower - Read about correcting dynamometer hp to SAE, DIN, or other atmospheric condition standards.

Data Aliasing - Read about the phenomenon of aliasing in digitally recorded data.

Dampening Data - Read about when to average, dampen, or otherwise filter the display of dynamometer test data.

Determining Inertia - Learn to use DYNO-MAX and dyno to self-calculate the engine's polar-moment-of-inertia.

Dyno Hp Limits - Read about what limits the maximum power you can accurately read from a roller chassis dyno.

DYNO-MAX "Hot Keys" - Special PC accelerator function keyboard shortcuts speed dynamometer testing.

Flow Meter Calibration - Step by step instructions for verifying your fuel transducer's accuracy.

EGT Response Time - Read how to attaining quicker reaction times from EGT thermocouples via DYNO-MAX.

How Dynos Work - Reprint from Kart Racer magazine on the basics of dynamometer operation.

Inertia Compensation - Read about correctly using Channel Dampening in conjunction with Inertia Compensation.

Inertia Flywheels - Calculate the required polar-moment-of-inertia to simulate a vehicle's weight with a flywheel.

Inertial vs. Steady State Hp - Learn why your dynamometer shows an engine's inertial and steady state Hp don't match.

NI Board Installation - Step-by-step instructions on installing National Instrument Board Drivers for DYNO-MAX "Pro+."

Parasitic Losses - Step-by-step instructions on determining driveline parasitic loss values for any chassis dynamometer.

PID Tuning - Tips on tuning a dynamometer's electronic load control Gain, Drift, and Rate (PID) settings.

Race Simulation - Requirements for performing high power race track simulations on a chassis dynamometer.

RFI Troubleshooting - Reducing problems with ignition or other engine noise interfering with sensitive computerized data-acquisition systems.

Recalibration - Read about why, when, and how to perform recalibration of the dynamometer's torque readings.h

Repeatability - Suggestion for improving the repeatability of any dynamometer installation or test session.

 Roll Balancing - Read about some of the details to consider when balancing rolls for high-speed chassis dynamometer testing.

 Roll Diameter - Read about how roll diameter is tied to tire deformation, maximum safe speed, and power transfer capacity.

 Simulate Road Loads - Find out about running self determining dynamometer test simulations.

Smart Ratio - Feature automatically enters the correct DYNO-MAX overall gear ratio for simplified chassis dyno setup.

Sweep Rate - Tips on selecting the optimum test sweep rate for evaluating real world performance on the dyno.

Thermocouple errors - Understanding how these sensors work can help avoid invalid EGT readings.

Tire Damage - Goodyear Tire's interesting comments on tire safety and chassis dynamometer roll diameters.

Tire Slippage - Read about tips on improving traction on older chassis dynamometer rolls.

Torque Hysteresis - Read about reducing the water brake's plumbing hose loads to improve the dyno's repeatability.

Using BSFC #'s - Read about utilizing the Brake Specific Fuel Consumption data to help tune the engine.

Water Supply Tanks - Basics of selecting water supply tanks for engine or chassis dynamometers.