descartesfool

I have figured out how to get new tracks into Bosch LapSim from my Race Technology data logger. I now have Portland and Le Circuit Mont Tremblant, with more to come.

LapSim can import Motec data files in *.csv format directly. That is fine if you have a Motec logger, and it also imports Pi files directly. I had an e-mail from someone who contacted Race Technology and they said it couldn't be done. They were wrong, as I (and others ) have done it. A person working with a CART team (Dale Coyne Racing) was kind enough to send me a Motec file of a Toyota Atlantic doing a 1:09 lap at PIR. I was then able to import that into LapSim. I then loaded the file in Excel and had a look at the data columns, and played around by deleting some columns and seeing which were required as a minimum to get the file to load into LapSim. I also played around with the file header and noticed that it seemed to need all the items listed in the Motec header.

I then exported a session from Race Technology by using the Run Manager into a *.csv file. I then cut the file down to a single lap in Excel. I copied the header and column titles from my minimal Motec file. Then I cut and paste the data from the Race Technology file into the matching columns on the Motec file. I saved the file and then proceeded to load it directly into LapSim. It worked first time, and I was able to export the track map of Le Circuit Mont Tremblant. The only error was that the lateral G sign had to be inverted when loading the file as initially the track direction came out backwards. No need to redo the *.csv file, just click the appropriate radio button in LapSim and reload. The file does not use any GPS locations, so this will work with almost any logger for which you can make a CSV file. All you need is a Motec header, and the following data for one lap.

1. Elapsed time in seconds
2. Distance
3. Lateral G's
4. Longitudinal G's.
5. Speed

Data can be metric or imperial, and header changes to match units, although I only tried it in imperial so far. Speed from my DL-90 logger is from the GPS, and I just used that as the Wheel Speed channel for Motec and thus LapSim. I actually changed the start time to 0.00 seconds in the DL-90's file, and incremented the time step by 0.01 to match the exporting setting of 0.01 seconds I used in Race Technology. That way the final time at the end of the file is the lap time for that one lap. I set the sample rate in the Motec header to 100 to match the 0.01 second time step, but I am not sure if LapSim actually reads this value. That way the laptime indicated in LapSim is the correct one.

Have fun with your own tracks. The beauty is that when importing this data (and more if you want such as RPM, Throttle position, Steering wheel angle, Suspension pots, Yaw rate, etc.) is that you see your actual data in Lapsim's charts and you can compare it to the simulation data and adjust your car model to match the real data. Yummie.

descartesfool

Here is a sample Motec header and the first few lines of data from my DL90 pasted into the Motec column headings starting one line below the units line. The only thing that comes from the DL90 file is the numerical data in the columns. You will have to type the header into Excel and save as a csv file with a "," as a delimiter.



The line below the units line is the Motec channel #, and should be left as is.

RR98ITR

Cogito Eros Zoom.

Scott, who doesn't know anything about all that other stuff there...

Ponyboy

Dude, your posts make me wish to be smarter and/or have more time in my day...

descartesfool

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RR98ITR &raquo;</TD></TR><TR><TD CLASS="quote">Cogito Eros Zoom.
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I like that. Now the beauty of it is that I have the Portland track with the new chicane and I can drive it in LapSim without spending a dime on fuel. Just think of the savings. First I save the cost of the trailer, then the gas to trailer it across the continent and back, and the track fuel and tires and pads. And then if I don't like my lap time compared to that 1:09 from the Atlantic car, I can just upgrade my engine for free and drive it again in LapSim and for sure woop yur ***! Maybe 1:24 sounds good at PIR. 1:09 is perhaps too lofty a target, but maybe I can just add a difuzzer.

hybridvteceg

bringing this back

what is your email. Id like to chat some.