How to tell MPH

[OS4ever]

Does anyone know of a way of find out MPH without a radar gun or GPS. I have one of my rc's that i know goes well over 50mph but my buddy disagrees. Is there any equation you can measure with feet then use a stopwatch to determine approxamite MPH??

any suggestions??

 

[Candyman]

Mark out a distance of 100 ft.
Get up to speed and have someone time the 100 ft distance.
Then take that time and divide 100 by it. That will give you your feet/second.
Multiply that by .681 and you'll have your mph.

Or if 100 feet is too long, you can do it over 50 ft. Then just divide 50 by the time to get ft/sec and multiply by .681.

Just remember that the shorter the distance you time over, the greater your margin of error and the less accurate your calculation.

The easier way is to either radar it or get your hands on a Venom Speed Meter.

 

[insaneatvs]

I have an extra GPS... I think i may zip tie it to my Tmax and let her rip

 

[slowngreen]

just drive next to it in your car lol.