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Dyno blog

Latest dynamometer software update

Mon 08 May 2023
About 40% of our dynamometer users haven't updated their software to the latest version. We strongly recommend an update.

Dynamometer grip is critical for EV cars

Thu 24 Nov 2022

Electric cars have broken into the market without any conventions. They are there and that's the way it is. Hundreds or even thousands of newton metres of torque have become a reality. Whereas previously these parameters were reserved for dragsters, today a BMW i3 or an Audi e-Tron can burn a tyre on a dynamometer.

Chassis dynamometer vs 'portable road dyno'

Tue 22 Nov 2022

A chassis dynamometer is standard equipment for serious tuners. It is hard to imagine remapping cars without thorough verification of the results. Without true feedback, engine safety and claimed performance cannot be guaranteed.

2021.12 Dyno Control Update

Tue 26 Oct 2021

Besides changes and new features in new dyno software, our latest version includes "forced coast-down" controlled by eddy-current brake and calibrated via tensometer. It vastly speeds up measurements.

Which dyno to buy? How to choose a right one.

Thu 09 Jan 2020

How to compare dynamometers available on the market?

Every chassis dynamometer consists of three components: hardware, software and the measurement technology used. These three elements must work perfectly together. Furthermore, a lack of hardware capability cannot be "fixed" by software or technology and vice versa. All components must be perfect.

4wd dynamometer with linked axles (axle synchronization) – is that good?

Fri 16 Aug 2019

All VtechDyno 4wd (4x4) dynos have full front to rear synchronization as standard. This means that front and rear rolls rotate with exactly the same speed (of course only if sync axles, so called „synchronization” is enabled). Such linked axles functionality is offered usually as option by other dyno manufacturers, or is not available at all. The question is: is such synchronization important for nowadays cars?

How to read dyno graph

Thu 26 Jul 2018

Reading the graph of the chassis dynamometer pull is not difficult. Typical chassis dyno (rolling road) graph is arranged like this: the horizontal axis shows the engine speed (or alternatively – car speed) and the vertical (or two vertical, mainly on the left and right side of the graph) power, torque and optionally other logged parameters (eg. turbo pressure, lambda, AFR, exhaust gas temperature or the rate of smoking, OBD logs etc/).

Pros and cons of buying an used dyno

Sat 15 Jul 2017

As new, modern modular rolling roads may be expensive, especially at the beginning of a new business, used dynos for sale are listed in various internet pages. There are some better and worse developed dynamometers, but in most cases the whole idea of chassis dyno is common – a steel crate with rollers, sometimes twin-rollers. 4Wd (4x4) dynos may have front axle connected to rear with the belt or drive shaft, but most older dynos have no front-to-rear connection and are intended to stabilize and equalize roller speeds with electromagnetic brakes.

Wheel power or engine power?

Tue 12 Jul 2016

Websites are full of more or less accurate dynamometer pull results. It is common to use dyno results (dyno graphs) for various cars to compare their capabilities, potential accelerations and driveability. In most cases, these results are comparable, at least according to the standards used (most popular are SAE in the USA and DIN across Europe). Still, the painful fact is that they are widely incomparable across continents: in America, wheel power is king. Europe relies on engine power.