I've had a LapTimer (GP) failure on my most recent 2 track days. Here's what I did this week, with v24.6: - used a different iPhone for LapTimer (to eliminate any historical influences) - installed LapTimer and configured settings as per what used to work - downloaded the 3 tracks in our area, one o...

I had a track day where LapTimer kept splitting my laps into 2-5 pieces. Don't know why, GPS signal quality was very good. Maybe because I was running iOS screen recording to capture the LapTimer screen for later inclusion in a video made via RaceRender? Anyway, I've joined all the segments but ther...

Thanks for the (as usual) thorough explanation.

Since I'm using an iPhone 6 for LapTimer data-only capture (video tracks are all externally captured on other devices), I'll set a 20 Hz rate and not worry about it.

Did a quick search and didn't see any discussion about this ... For the "Storage Rate" setting, the blurb warns "Do not use 20 Hz except when driving short tracks only." - what length constitutes a "short track" (or, more importantly, a NOT short track) - what about whe...

Thanks for the response. One thing I normally do is connect an old iPhone 4S to the car's BT when running LapTimer on the iPhone 6 (it only does data capture, not video) ... I may have forgotten to do this. I was also having problems with the VBOX Sport's BT connecting to LapTimer and ultimately had...

I recently did 8 15-20 min track sessions and found the following with LapTimer GP v23.0.5 on iOS 10 and saw the following: - lost some of the (KiWi3) OBD channels some of the time - saw many/regular drops in OBD data collection ... e.g., see the OBD speed drops to zero in the attached picture The s...

Don't know about the XGPS150 units, but my XGPS160 reverts to 1 Hz with LapTimer if I turn on the logging (i.e., tell the XGPS160 to record its GPS data). Turn off logging and it returns to 10 Hz.

ps: my interrogation regarding external antenna performance vs. without was for use in fiberglass cars ... Somewhere on either the US or British RaceLogic sites there's a statement about adding a minimum-dimension ground-plane if using an external antenna on a non-metal car. This can be constructed...

This "plotted position on the track" accuracy was what I was referring to in my post at http://forum.gps-laptimer.de/viewtopic.php?f=19&t=5452&p=26650#p26647 For me, the "track plot" in Circuit Tools was more accurate from lap-to-lap throughout the day when using the VBOX...

In case you have both the XGPS and the VBOX active, there is only one option to force the use of one device: unpair the other device in your smartphone's BT settings - this will make it invisible for LapTimer As the kids would say "Du-Oh" ... so obvious (he says, somewhat red-faced). Than...