Our Complete Shock Dyno features include:
We also offer the sensors, electronics and software as a "retro-fit" kit for your existing shock dyno, described at bottom of this page.
Overlay Graph of 5 Shock Tests (+ and - velocity), with Cursor to Pin Point Values
The Shock Dyno Retrofit Kit provides a load cell and length sensor, plus electronics to record both channels. Once data is recorded, you can create reports or graphs of the results. You can also overlay graphs from several different shocks for comparison.
Graph with just + Velocity
The program has several options, including:
You can graph results either absolute velocity (typical of most shock dyno programs) or versus velocity with direction. This 2nd choice lets you pin point differences on the graph more easily with the cursor.
Modern USB electronics for easy installation on newer computers.
Overlay plots for comparison.
Infra-red (non-contact) temperature sensor (optional with Plus software).
Start testing immediately or when a user selectable temperature is reached (temperature requires Plus software).
Summary of results as shown below, for max Compression and Rebound force, Stroke, RPM, Test Cycles, Average/Max/Min temperature, etc.
Programmed or user selected test time.
Over-Force shutdown safety. If the system detects a force greater than user selectable limit, the motor is turned off. This can happen if you install the shock incorrectly.
The program is compatible with Windows XP, Vista, Windows 7 or Windows 8, which means it is easy to use and you will be able to print the results on most any printer, usually in color if your printer supports it.
The software provides for an optional Plus version, which adds several features:
Real Time Graphing - Green dots are current readings, black lines are from
"Football" graph of Force vs Position for 2 different shocks
Some customer's have asked how results on our dyno compare to other dynos. Most people consider the Roehrig tm dyno the industry standard. We ran a couple shocks on our Performance Trends dyno and a Roehrig 3VS dyno and the results are displayed below. I think you can see that our dyno produces the nearly same results as the Roehrig, and the difference could be easily explained by the small differences in shock temperatures. When you consider the Roehrig tm costs about 3 times as much as our dyno, we definitely offer the best testing value.
Performance Trends Dyno - QA1 shock tested at 93 deg (produced with v1.1B Plus software)
Roehrig tm Dyno - QA1 shock tested at 73 deg
Performance Trends Dyno - Penske shock tested at 102 deg (produced with v1.1B Plus software)
Roehrig tm Dyno - Penske shock tested at 80 deg
People sometimes wonder if a 1.5 HP motor is strong enough for testing some of the high rate shocks used in current circle track racing. The graph below is for a JRI shock on the left front of a CRA Super Late Model, at 2 different and relatively high rebound settings, 7 and 9. You can see we are easily measuring almost 2000 lbs at about 6"/second velocity. We also have the 2.0 HP 220 VAC motor option for even higher performance.
Here's a picture of what happened to one of our shocks we used to test the durability of our Shock Dyno design. Yeah, we're tough.
What You Need:
Computer with Windows XP, Vista, Windows 7, Windows 8, Windows 10.
What You Get with the Retro-Fit Kit:
The shock dyno kit expects your dyno to use a slider crank (like piston in an engine) or Scotch yoke design to cycle the shock, but does not need a variable speed motor. We very accurately measure the speed of the shock as it goes through its cycle up and down. When it is at the top of its cycle, it has stopped and then changed direction to go back down. As it goes back down, it picks up speed to maximum speed at mid stroke, then slows down when it gets to the bottom of the cycle. Then this whole process is repeated in reverse.
So, as the motor turns at a constant RPM, we can measure the velocity and force at all points of the cycle, and produce a complete shock dyno graph with force at all velocities. This makes it very easy for the electrical motor, just set it to something like 150-300 RPM with a 1" to 3" stroke, get it up to speed and press F1 on the keyboard. The software records several cycles and then presents the data.
SDyn-SSAK Three piece "Adapter Kit" for mounting production style shocks on the shock dyno. Kit handles top stud/bottom cross bar type of front shocks, and top cross bar/bottom bolt hole rear shocks.
SDyn-IR Shock Dyno infrared (non-contact) temperature sensor with bracket. If you order the retro-fit kit, we typically sell you the DT2-IRA, which is the same sensor but without the bracket.
More Information, Movies, Download Demo:
for some movies on setting up and operating the shock dyno Shock Dyno Movies.
to download a FREE Shock Dyno Demo.
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Call 248-473-9230. Visa and Mastercard accepted. Performance Trends can provide you an "unlocking code" number to activate all features (bring it out of demo mode). When newer versions are released, you can download the latest demo and activate all features with this same "unlocking code".
The "on screen" help explains all features, inputs and outputs.