Tom tom speed reading info needed

[G T 3]

Ive got a garmin but the speed reading is not fast, does a tom tom read as the car speeds and slows accuratly? I need this facility as my momo obscures my speedo, and need to know my speed as I have been pulled.

[randlemarcus]

The sample rate of the GPS signal isnt really fast enough to be 100% reliable while slowing or speeding up. Best bet, and something I found worked quite nicely is to find a nice quiet bit of road, and go at the significant speeds (30, 50, 70 etc) and make a good mental note of the revs in each gear. Then you know what speed you are doing without having to focus on the 5mm figures in the corner of the TomTom.

[Baffled Spoon]

You could try and get a heads up display such as this one. I think they link up directly to the engine and relay information such as speed and revs in real time onto your windscreen.

HTH

[markmullen]

Usually Satnav units sample at about 1 time per second which will not help too much with speed display when accelerating (unless you drive a Nissan Serena in which case it'll be fine ).

For a much more accurate speedo try a driftbox, http://www.driftbox.com/ IIRC the sampling rate is 10 times per second which will keep pace with your acceleration.

Edited by markmullen on Sunday 6th April 19:13

[G T 3]

£465...........SLIGHT PROBLEM!!!