Speedo Accuracy : Kawasaki ZX Forums: Kawasaki Ninja Forum

ReaperWales · 08-13-2007, 04:33 PM

Since I've stuck the GPS on the bike I've had a chance to check the speedo accuracy, I was pleasantly surprised, at 70mph indicated on the guage I was doing a real world 67-68mph, that's not to shabby, most vehicles i've driven have been set to 10% overread this is much closer to the truth, will try and confirm at faster speeds once i've had the first service done.

TedG · 08-13-2007, 07:18 PM

I went through a radar speed display and I held it a 52, the display said 51.

scooter_scum · 08-13-2007, 07:21 PM

I found that in overdrive, 3000 RPM is about 60 MPH. 4000 RPM is about 80 MPH. 5000 RPM is about 100 MPH. Just take the first two digits of the RPM and double it for the speed in top gear. I find it a lot easier to read the RPM guage than the speedo.

TedG · 08-13-2007, 09:26 PM

In top gear it is 72 mph at 3500 which is pretty close to the double calc. I just look at the speed at 3500 in any gear and triple it to calc the max speed in that gear.

ReaperWales · 08-14-2007, 02:46 AM

With the emphasis here in the UK on speed camera's we need a very fast and reliable way of checking our speeds at a glance, on some stretches of road we can have cameras less than a mile apart and therefore i'm glad to have something I can read in a flash as opposed to getting a flash giving me a ticket.

08CC14 · 08-15-2007, 10:51 PM

I use a Cateye 8 on my YZF600R. http://www.performancebike.com/shop/...tegory_ID=4110 After you get it installed you program it with the circumference of your tire and the speed is dead on. You'll like the large display also. :)

TimoFIN · 08-17-2007, 01:55 AM

In the test by Scandinavian Bike journal (8/2007) they got the following speedo accuracy figures:

speedo meter actual speed (km/h)
50 49
100 98
150 146

Top speed:
268 259

PS. I will get my own GTR next wednesday