Nanocom and Speedo different speed

[ntguy]

Hi All,

My Nanocom reads about 10kms more than the speedo.

I did a search and couldn't find anything on how to synchronise them

Does it mean the speedo is out? If so seems to be no way to correct it.

[schuy1]

There is a setting in nanacom to adjust for different size tyres. What you are seeing is a speed different error. I found the easiest was use the gps to find the actual speed and fiddle with the nanacom settings so it read true speed. Note that it cannot alter the speedo readings though, you will just have to read the nanacom. Having said that once you know the error amount it is easy to mentally add or subtract it from the speedo reading. I drove the falcon for years with a 20mph error after I installed a celica 5speed and never had a prob.
Cheers Scott

[trevor]

Mine is the same. Have 265 75 16's on and speedo is 10% out. Used to use the nanocom or Gps to monitor speed but you know what speed you're going anyways. In the nanocom you adjust a setting relating to tyre size, from memory mine was 1.1 and nanocom then matched the gps

[Slunnie]

Just to clarify here....

You can use the Nanocom to adjust the speedo for oversized tyres? ie speedo correction devices have just been made redundant?

[kelvo]

Just to clarify here....

You can use the Nanocom to adjust the speedo for oversized tyres? ie speedo correction devices have just been made redundant?

No and no.

The setting in Nanocom only adjusts the road speed display on the Nanocom screen. The speedo in the dash is unaffected.

[schuy1]

^^^^what he said

[nismine01]

Just bought a Nanocom Evo, its road speed is about 10% out. At 100 it reads 113, I have previously checked my speedo with GPS and the overhead speed indicators in Victoria and they all agree, my speedo IS correct, Nanocom is not.

My tyres are standard size and quite worn so certainly not oversize. (Argh, this site is set for American spelling, it's tyres not tires!)

[Slunnie]

No and no.

The setting in Nanocom only adjusts the road speed display on the Nanocom screen. The speedo in the dash is unaffected.
Cool, thanks Kelvo.

[that_kid]

I run the Nanocom full time on a windscreen mount and have the speed dialled in to be accurate on the 315's, its brilliant. They're a great bit of gear to have running all the time so you spot temp creep etc that the car wont do on its own. I was able to spot a very subtle boost leak that I would likely have not notice otherwise because of it. Love it!

[sierrafery]

Nanocom is not the best way to read the speed cos it extracts it from the SLABS which is a signal calculated as an average of all wheel speed sensor's readings and makes it's own conversion... it's enough to have one aftermarket hub/sensor fitted to get erratic result.

i've used hawkeye and nanocom both to check and there was around 7% difference in readings at the same speedo position(100 km/h), hawkeye was closer but still not exact(standard tyres) ... IMO the best way to check speed is a GPS, this function of any tester is to see if there is vehicle speed signal present in case that the speedo is not working not to "calibrate" things

[nismine01]

Hi all,

How do you set the Nanocom to read the correct speed , and how do you get it to stay on?
Mine switches itself off after ignition off and does not come back on, I need to unplug and reconnect it to restart it.



:(

Mike