Accurate enough for 1/4 track, 20 second lap time?

I'm shopping for a GPS based lap timer that will be accurate enough to help with lap times on a 1/4 mile dirt flat track (motorcycle). Is the sample rate with this android based application fast enough to notices accurate differences in lap times, when the lap time is ~ 20 seconds? (45mph average)

I would like to be able to measure lap differences within .1 sec, ideally within .05 sec.

Comments

  • I think you'll be fine with Garmin GLO as GPS with the +-0.05-0.1s requirement. With internal GPS such accuracy is possible but it all depends on the phone you use, and weather etc.
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