speedo on 700 way out

[clutchspring]

Hi, every one ,
I have a 08 700 transalp with abs, I have found that the speedo reading when conpared with the sat nav speed reading is way out,
It show 33mph when sat nav shows 29 and the faster I go the more out it gets, at 70 mph on the sat nav the speedo is showing 80 mph,
any other 700 owners have this problem,
Thaks,
Ian.

[largewayround]

I have a TA 650 , but have noticed similar on my speedo . Guessing that they design the speedos to read under true speed.

60 on GPS = 64 on clocks.
30 on GPS = 32 on clocks.

[DGRider]

Too busy keeping my eye on the road, but from the glances I've taken mine is a fairly consistent ~10% error. I'd be surprised if it was a variable percentage. It's not just the TA that has this, most vehicles I've compared the in built speedo overstates the true speed. Dunno why it's just what manufacturers do. With all the speed cameras about its possibly a good thing?

You could try the SpeedoHealer if it annoys you enough and you aren't happy compensating with some quick maths...

HealTech Electronics Ltd. - Makers of the SpeedoHealer, GIpro, X-TRE, OBD Tool

Let us know if you do, I was tempted myself at one point

[largewayround]

I am guessing that the manufacturers do not want to indicate true speed , just in case in over a bit , then they could be liable in court .. over speeding tickets etc ..

[Statler]

Manufactures will make the speedo read high normally up to 10% from new.
This allows for the changes in rolling radius from new tryes and old worn tyres and keeps you within the law with a slight margin.
The Sat Nav will always give a lower speed indication as it takes reading from your speed via satallite data.
You also have to be careful with the Sat Nav as this is not always 100% accurate it depends on Satallite spacing and if you are on the flat or on a hill.

[stephen McG]

for what it is worth.
my daily journey on TA700 was 20 miles, this was a (very nearly) 200 mile a week.
I now have new Gladius 650 and while I get a feel for range (no fuel guage), I realise that my journey has shrunk to just over 18 miles each way.
So changing the bike has made my journey shorter

SMcG
2 miles in 20 is 10% !!!!

[Nessmuk]

I've found that all but one of the cars I've checked by GPS read wrong too. the only one that was correct was the Lada Niva I had for a while. It was bang on with the GPS over it's whole range.

Useless fact but true.

[Delboy 777]

There has been a EU directive in force since 1992 wherebye vehicle speedos are not allowed to under read but they can over read up to 10% hence the allowance for speed scameras.

[jasonbc]

Hi, every one ,
I have a 08 700 transalp with abs, I have found that the speedo reading when conpared with the sat nav speed reading is way out,
It show 33mph when sat nav shows 29 and the faster I go the more out it gets, at 70 mph on the sat nav the speedo is showing 80 mph,
any other 700 owners have this problem,
Thaks,
Ian.

They all do that my varadero over-reads all the way through by 5mph, ironically the most accurate one i have is th etrailtech on my XR that is bang on wit the GPS you calibrate it to your wheel size. As for the speedo accuracy the rules must have changed as it used to be + or - 6% for accuracy

[dubhe]

Before I had my rear tyre changed the error in speed was about 9% (on a TA 700) and the odometer was less at about 5%. With the new Trailwing on the error was reduced to about 5% and 1%. This makes sense with reduced circumference on the old tyre.