Dynapack software download to read dyno files

This data can be exported for use in other programs such as Notepad or Excel. Road Load Ctrl-F2 provides a resistance-load equivalent to the load the vehicle would experience rolling along a smooth straight road at the current speed.

As the speed increases the load increases in response, simulating the rolling resistance and aerodynamic drag on the vehicle. Road Acceleration Ctrl-F3 simulates driving the vehicle on a smooth straight road. The selected Road Gradient and the calculated Road Load are displayed live pictured below and logged for in-depth analysis later. As long as you are above the minimum throttle setting that is required to achieve that RPM, you can apply as much throttle as you want and the RPM will not rise above that point — all the way up to the full maximum rated torque capacity of the dyno.

The dyno will then display the real-time torque and horsepower being absorbed, as well as other real-time relative data. You would then input the RPM hold point and bring the throttle up until the dyno is holding the speed, and you have reached your throttle setting. The dyno will hold this RPM point for as long as you like. You can now gradually adjust your fuel mixture at that data point and directly see the results of your actions. All of this is happening even though the vehicle is not accelerating.

Once you have found the maximum torque at this data point, you are ready to move on to the next data point. The tuning of fuel and timing maps that appear complex are now easy to work through and can be optimized without guesswork.

This cannot be said about any inertia dyno. Our method is faster, easier, produces more consistent results and can be precisely duplicated at any time. In the two-wheel mode, you can see the difference in torque applied to each side. It is important to note that our four-wheel models can be operated in the two-wheel mode by simply using only the two primary pods.

A four-wheel-drive vehicle can even be switched in and out of four-wheel-drive as you wish. There are no straps to place additional loads or restrict suspension movement under varying torque conditions. You can actually see the suspension geometry react to the torque load and the effects of anti-squat geometry etc become readily apparent.

You can also look at the individual data for each dyno run by changing the "Data source. You can also export the data from this screen into a spreadsheet. Play with the software and you'll probably prefer it to a spreadsheet. Export the data if you wish into a spreadsheet, and make your own graphs. Save it in the same location as above. Categories Biography Who is PencilGeek? Pages Photos. We have heard of cases where the ratcheting tie-down straps were loosened by two clicks and the measured power increased by ten horsepower.

What if the straps stretch — either from run to run, or during the run itself? Street wheels and tires spinning at high RPM have a large amount of inertia. A large steel drum spinning at the same ground speed has much more inertia.

What you end up with is a giant, heavy flywheel attached to your engine. The inertia is such that just trying to accelerate the mass of the roller is a substantial load for the engine. Accelerate a known mass to a measured speed over a given time and it can be calculated to equal a certain amount of power. There is nothing wrong with this theory, but like many theories, its application in the real world can be troublesome. How do you think your measurements will be effected by being subjected to this large heavy flywheel phenomenon?

Will small fluctuations be noticeable? In a word, no, the flywheel effect tends to take small rapid variations and smooth them right out — as energy that should be going into the dyno is being wasted trying to accelerate a large lump of steel. What if you eliminated this flywheel effect? The inertia of a Dynapack is practically zero! Another benefit of having virtually zero inertia is the ability to change the rate of acceleration at will. In many situations, you may want to accelerate the vehicle at a different rate to simulate a specific condition.

With a few simple keystrokes, we allow you to make the vehicle accelerate very quickly, slowly, or anywhere in between. Because of our lack of inertia and total control of the engine speed, we give you choices that none of our competitors can even dream of — and as you know, choices are good! The hubs of the vehicle are directly attached to hydraulic pumps. We can apply a variable but precise load with all of the potential holding power that hydraulics possess.

The wheels are removed from the vehicle. Our variable fit hub adaptors are bolted to the vehicles axle. The hub adaptor is then directly attached to a hydraulic absorption unit. We can apply a variable but precise load to the axle s of the vehicle. Simultaneously, we are monitoring pressures and measuring hub RPM, so we can determine the amount of work being performed.

It sounds easy until you realize that all of these calculations are very complex and are happening very quickly. Add to this, all of the data logging functions and real-time full-color graphics that are also being calculated and you begin to realize that what appears to be simple is actually very complex…being the best is never easy.