Q&A Forum

I've tuned quite a few cars with live graphs now. 95% is done with power sweeps. The real benefit from live graphs is being to watch it being overla...

And here is a 4wd car - over 130bhp of losses. Capture.JPG

Would it be possible to graph vs RPM or speed instead of just time? Also, to show a number as well as the graph plot?

Attached is a plot of a fairly low power car. Inertia was calculated for this car using sweep up and down and comes out at 3.3. Two runs, one in 4t...

Hi Jostein. The calculation you describe is what I would expect. When i talk about speed, I am saying that the losses are related to the roller speed...

Have a look at some Maha dyno graphs, they are have a nice model.

Yes with Hub dyno you will not see that much difference. On car that starts off at 230bhp and then goes to 450 bhp - it's quite a lot of difference.

It does increase with power, more thrust loading on helical gears etc. But, the biggest increase in loss is through tire flex. Especially when you ...

No 🙂 Try it yourself - run a car standard, then run a car once it is tuned with more power. You will see the drive train loss is identical - the perc...

You misunderstand me, Currently the calculation is ONLY related to roller speed and not the power output. As power output increases, so does the loss...

New software is all good at my end, printed out may plots already.

it will be harder to turn but will turn faster for a given movement - hence more power 🙂

Kess is a a tool to read and write ECU flash, it's nothing to do with actual tuning.