Any way of Producing A Traction Circle Diagram

[Maxx]

I'm pretty sure the answer is NO from within the current (V6) software but all the data is present and wouldn't think it difficult to do.

I assume there are DL1 users out there who will wish to analyse Friction/Traction Circle usage and would be interested to hear how you are going about it.

TIA

[Maxx]

A question related to the above. In the HELP INDEX it mentions TOTAL ACCEL as being one of the analysis variables. There is no Total Accel in the DL1 (v7) software, is VECTOR ACCEL the same thing?

[tristancliffe]

Yes, Vector Accel is the combination of lateral and longitudinal accels at any given moment.

As for the friction circle, I find the easiest way is to make a graph:

X axis = Lateral Acceleration, with axis NOT starting from zero, -2 to +2.
Y axis = Long. Acceleration, from/to whatever makes the result look oval (it's an oval not a circle).

It can take a while to get sensible numbers on the axis (which I like - I prefer 0.2 0.4 0.6 to 0.133 0.266 0.399 et), but you get the idea.

Oh, and turn on the circular grid, and join data points in the other graph option menu. And save your layout when you've made it.

[Maxx]

Tristan,

Aha, many thanks, something more to play with.

M.

[tristancliffe]

I keep finding new ways of displaying data, or extracting something interesting (although not necessarily useful). I sometimes just try plotting random variables against random variables to see what happens.

I haven't mastered bar charts yet. I can't think of anything that needs a bar chart really. Maybe I need to play (and read the manual again).