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Dyno
We house a state of the art SuperFlow 845 chassis dynometer that can accurately measure 1500+ rwhp and speeds of 200 mph using the latest technology in electronic data acquistion and practical engine function graphing techniques. A chassis dyno, or dynamometer, to be precise is an automotive tool designed to simulate a road in which an automobile is driven. It’s main purpose is to provide a means in which an automobile can be accelerated, cruised, and generally driven while remaining stationary in. A chassis dynamometer is used in this manner to achieve several objectives ranging from performance tuning to diagnostics. .
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Motion Performance is Manitoba’s premier horsepower testing and dyno performance tuning center featuring a state of the art Superflow SF 845 autodyn chassis dyno
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Spending money on a bolt on such as an intake or exhaust mod, camshaft, ported heads, forced induction, or nitrous does not guarantee horsepower.
Horsepower testing and performance by Sheldon Root at Motion Performance, using the SuperFlow SF 845 dynamometer guarantees accurate results.
Now spending money on a Magnaflow exhaust system, lunati roller camshaft, aftermarket throttle body, Brodix ported heads, big Manley valves, Pro-Charger, supercharger, roots style blower, twin 88’s, or NOS system provides you proof in the form of a print out with your results in both graph and analog format.
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Safety
A technician can safely test and tune a car repetitively without having to drive the car at unsafe and illegal speeds. Many automotive performance tests consist of running the vehicle at wide-open throttle and at high speeds. Even if a technician has access to a test track and professional test driver, the issue of safety still exists. Not to mention the wear on the vehicles tires, brakes and suspension. Chassis dyno testing and tuning complements track testing.
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Efficiency and Accuracy
A chassis dyno provides an automotive technician a platform in which to repetitively test, evaluate and tune a vehicle in a relatively short amount of time. Using the dyno’s load functions, a technician can tune a vehicle across the engines entire operating range and performance envelops. Modern chassis dynamometers such as the SuperFlow 845 operate with cutting edge software technology to provide accurate, efficient and repeatable testing. A dyno used in conjunction with current electronic engine management systems and tuning software provides a technician or enthusiast a complete toolkit to evaluate, adjust, re-evaluate and perfect a vehicle’s tuning parameters.
Baseline and Successive Testing
An automotive enthusiast wishing to improve vehicle performance can use a chassis dyno to determine the vehicles baseline performance before any modifications are made. After each stage of modifications are performed, successive dyno test are conducted to evaluate and determine the effectiveness of the modifications. A performance aftermarket vendor involved in developing performance products should use a chassis dyno to help test the products design and effectiveness in improving performance.
Diagnosis
Certain symptoms of vehicular problems are many times exhibited only when the vehicle is driven and only during specific speeds, RPM, gear, etc. A chassis dyno can aid a technician by simulating the same conditions in which the symptoms are exhibited while the vehicle is driven on the street without the safety and legal issues.
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What is a Chassis Dynamometer?
Certain engine or vehicle development tests require testing the vehicle in similar conditions as on the road, but while remaining in the shop. A chassis dynamometer (also called “rolling road”) is capable of simulating driving situations in a controlled environment. Chassis dynamometers typically consist of rolls driven by the wheels of the vehicle and connected to a power absorber capable of controlling the load applied to the rolls. Electronic instrumentation and computer control software is now common, and the operator has a hand-held device to control some of the dynamometer functions while driving the vehicle. The chassis dynamometer has distinct advantages, the most important of which is the possibility of testing complete vehicle performance or engine performance as installed. There is no requirement to take the engine out of the vehicle, which simplifies both the test procedure and the environment required to support the test. Another feature of a chassis dyno is that you are testing with the vehicles fuel and ignition systems, this allows you to verify their proper operation.
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Chassis Dynamometers Are Typically Used For:
Checking Horsepower & Torque
Supplement to engine dynamometer testing
Checking Air Fuel Ratios
Measurement of driveline losses
Checking Fuel Pressure Boost Levels & EGT’s
Testing With a Power Absorber
Simulate real-world driving conditions by testing under load with a power absorber.
When you test with a Super-flow power absorber, torque is measured based on data from a strain gauge. The strain gauge is precisely calibrated and provides very accurate repeatable results. The power absorber allows you to test vehicles under operator or computer controlled load. Test at varying rates of acceleration, at steady speeds, at part or full throttle. Simulate circle track, road course and high-performance street applications. The power absorber lets you reproduce real-world driving conditions. You are not limited to full-throttle testing. Finally, you can tune for part-throttle, coming-off-the-corner acceleration that is so important to circle track and road course racers.
Commonly Asked Questions
Q. Do your customers always drive their cars at wide-open throttle?
A. No, of course not. So why would you tune their vehicles on a dynamometer that tests that way? AutoDyn with its optional computer-controlled power absorber, allows you to test vehicles under real-world driving conditions. AutoDyn lets you test under load at part-throttle settings, in different gears, steady rpm’s… almost any test you can imagine. Now you can properly jet carburetors, and adjust fuel injection for drive ability, trouble shoot timing, clutches and surging problems.
Q. Do you want to know all the conditions that affect the power output of your engine during a test?
A. Yes, AutoDyn can measure airflow, humidity, air temperature, oil temperature, and other pressures and temperatures that influence the power output of the engine. AutoDyn records all the information sensed. You can use this data to understand why the engine acts the way it does.
Q. Do I need to measure air temp, humidity, water temp and oil temp to run my tests?
A.Yes, while the Autodyn automatically measures air temperature, barometric pressure, and humidity in order to give the operator SAE corrected data, it is equally important to measure the engine operating temperatures (water temperature, oil temperature, cylinder temperature, and exhaust temperature). This way, you can make sure you are testing under the same conditions from one test to another. We all know as the engine oil warms up, the engine “makes” more power. If you were to change ignition timing from one test to another and you didn’t start out each test with the engine oil at the same temperature, you might conclude that the timing change gave you 2 more HP. In reality, the timing change may have given you a decrease of 1 HP while the increase in oil temperature gave you an increase of 3 HP. Starting each test with the same set of testing parameters (those you have control of) will make your testing very repeatable and accurate.
Q. Why do I need an Eddy Current Power Absorber on my Dynamometer?
A. If you have ever had the need to do partial throttle testing under load, then you have to have an eddy current power absorber. The absorber apples a load on the roll, reproducing conditions that the vehicle would encounter on the road. An inertia-only dyno cannot do this. With fuel injection becoming more popular you can’t do a full-throttle acceleration test to check the jetting. Now, you have to test for partial throttle drive-ability. The other advantage with an eddy current is the ability to test at a steady speed or RPM. How many times has a customer complained about a “miss” or “stutter” at about 45 MPH? With an eddy current, you can reach 45 MPH and remain there at various throttle settings. Now you have a way to fully test the entire range of fuel and ignition systems without racing past the problem area.
Q. What’s the difference between manually controlling an Eddy Current power Absorber and having the computer control it for you?
A. The SuperFlow AutoDyn software uses a computer to control the load of the eddy current power absorber. If you ask the computer to maintain a speed of 60 MPH, the computer controls the eddy current to ensure that exactly 60 MPH is maintained, which saves you time. With a manually controlled absorber, you will have to constantly adjust it to maintain 60 MPH.
Q. Do you have time to continuously adjust your power absorbers load during a test?
A. No. The computer should do it for you. AutoDyn’s, eddy current power absorber is controlled by a high-performance computer. It dynamically adjusts load to maintain a steady speed as you change the throttle. If you want to simulate road power, the computer dynamically adjusts the eddy current load, taking into consideration speed, dyno windage, vehicle aerodynamic losses and tire losses.
Q. What types of tests can I perform using an AutoDyn?
A. Inertia: Wide-open throttle single gear or all gear performance runs. These tests are a function of the inertia of the system and the power developed by the vehicle.
Absorber: Controlled acceleration, speed step, drive-cycle, deceleration, and track simulation, plus the two inertia tests listed above.
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