Anyone know how the PDR remembers the start/finish line? Does it pull it off the card from a previous run? Reason I ask:
- Car seems to remember same track start/finish between car on/off
- Car did not seem to remember same track start/finish from one weekend to the next. Wondering if it is because I cleared the card.

If it pulls start/finish from the card. Will it remember multiple tracks if I leave one run from each track on the card?

I've only run the same track so far so haven't been able to try this out.

 

I asked that same question a few weeks back with no responses, I hope your first statement is correct.
- Car seems to remember same track start/finish between car on/off
If true the track can be marked during lead & follows before being turned loose during hot sessions as long as the SD is not cleared.

 

It's a real pain in the *** since you have to have a glove off to hit the screen! There isn't any way to do it from the wheel is there?

 

No, it must be done from the center screen, therefore, I state if it can be done from warm up laps or initial lead and follows and maintained through many sessions prior to erasing the SD it would be a good thing.

Now dose it happen as stated in the first post?? I have 2 months before my first HPD session.

 

I set the start finish line once on my full caution early morning warmup laps. Then never set it up again. I agree it is a little confusing but Im thinking is you have to set it up once per full card as long as you have runs on that card for that track. Seems right because I ran all day saturday and didnt set it for sundays runs and the car sat all night at the track.

Good question though someone else hopefully can back up my experiences.

 

This is good to hear, I think post 1 backs up your statment. We do a couple lead and follows for people who don't know the track and I will set mine there and not worry about it on the hot laps.

 

At a lot of tracks you should be able to nudge up against the retaining wall and set it while waiting to pit out (Sebring, Road A, Roebling, etc.) if the hot pit is directly adjacent to the track. That's what we did at SM and it worked fine.
S.

 

Thanks. The time it didn't work for me one weekend to the other I must have cleared the card. Hopefully that means multiple tracks will work as well. That would be great.

 

Just to confirm what lawdogg mentioned about retention of the start/finish line, I did a run thru the neighborhood this afternoon. I set the start/finish line and started driving. The first lap recorded video but no lap time. As soon as I crossed the start/finish line it drew the gps track map and started recording laptime. I shut the car off for a few minutes, cranked it up and returned to the previously set start/finish line but did not set it again. i started the recording and again it did not register a map or laptime until I crossed the start/finish line again. I shut the car off, removed that card and inserted a new one. I positioned the car a few yards before the start/finish line and started recording without setting a start/finish line. PDR did not retain the start/finish line from the first card and never recorded a laptime. However, we have not answered the first question about multiple tracks on one card. Will PDR recognize you are at VIR if you have a card that has recordings retained from CMP and VIR both? The smart thing to do probably would be to keep a card labeled VIR that has at least one VIR recording with the start finish line, then keep another car labeled CMP that has at least one recording with CMPs start/finish line. That would allow your data analysis to be consistent.

bill

 

Just to put this thread to bed....finally....maybe... I did a run thru another neighborhood (think new track) using a card that had a previous start/finish line set on an existing neighborhood (think track 1). I set a start/finish line and was able to make a recording showing the map and once I crossed the line again it recorded a laptime. I then went thru the first neighborhood without setting a start/finish line since I had set it once before. It did not record a map or laptime. In looking at the SD card there is a file created called ".map.gpx" and apparently this contains one and only one start/finish line and track map. So...if I wanted to set a start finish line at CMP and not reset it, I would have to remove the CMP card and insert a new card before I went to the NCM Motorsports Park. Once at the NCM I would have to set that start finish line on the new card. Now, having said that...I suppose it is possible to take one SD card and rename the ".map.gpx" file to "cmp" and then reuse that card at NCM while creating a new ".map.gpx" file once at the NCM. Then if I wanted to reuse that card at CMP again, I would have to rename the ncm ".map.gpx" to "ncm" and then rename "cmp" to ".map.gpx". Don't hold me to that since I have not tested it but I don't see why that would not work.

bill

 

Thanks for playing around with this. So hopefully just keep that file per track.