# Road Question...

**URL:** <https://forums.speedlife.net/t/road-question/37960>\
**Category:** NYSpeed Off Topic\
**Created:** [October 31, 2007, 8:34pm UTC](https://forums.speedlife.net/t/road-question/37960 "2007-10-31T20:34:08Z")\
**Posts on this page:** 1\
**Showing post:** 24

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**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\
**Post date:** [November 1, 2007, 7:14am UTC](https://forums.speedlife.net/t/road-question/37960/24 "2007-11-01T07:14:44Z")

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[quote=“Fry,post:23,topic:37960"”]

I wonder how accurate they are. To be accurate within 5mph (~8%) you would need the timer to be precise down to about .0009 second, assuming that the rest of the system (input from the pressure switches) is dead nuts on.

[/quote]

yeah, my original post i meant .0008 per 5mph.

a lot of the latency in the system can be negated because it’s consistent between the two. the pressure transducer is just a piezo, and should be fairly simple to calibrate.

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