Author Topic: Speedometer Off by about 20% (Read 2450 times)

Baljo · « **on:** March 17, 2007, 12:11:57 AM »

My Speedometer shows less than acutually going! It's a B6 and I have timed with other rider. Could it be the sensor or maybe gearing change by guy I bought it from. Also will a digital instrument panel work and is it possible to use gas gauge on after market gauge. Any suggestions?
Thanks

chupacabra · « **Reply #1 on:** March 19, 2007, 05:58:01 PM »

For the speedo get one of the ones used on bicycles, get one that goes up to min. of 100mph

jeepskate99 · « **Reply #2 on:** March 19, 2007, 09:02:14 PM »

I have been using a Garmin Quest for a speedo. Quite accurate.

Red01 · « **Reply #3 on:** March 19, 2007, 11:30:40 PM »

It's common for Bandit speedos (and most Suzukis from what I can tell) to read a higher than actual speed. The 2G B6/12 are usually off by 7-12%. Surprisingly, the odometers are usually VERY accurate (<1% error typically).

If your speedo is off the other way, I would strongly suspect the gearing is not stock if your B6 is a 2000 or newer. It's also possible a weird rear tire size could throw it off... but not 20%.

If your B6 is a 1999 or older, it's a mechanically driven speedo off the front tire. About the only thing here to alter the reading would be tire size... or maybe a speedo drive from some other bike that has a different ratio.

jfudo · « **Reply #4 on:** March 20, 2007, 01:06:30 PM »

Quote from: "Red01"

It's common for Bandit speedos (and most Suzukis from what I can tell) to read a higher than actual speed. .

I believe this is the case for any new vehicle nowadays. All the manufacturers prefer to err on the side of caution. I don't think they want to be liable if the are wrong the other way. 10% error on the high side seems to be the standard (I should probably use the term 'high side' more carefully on a MC message board).

On the other hand, new vehicle odometers are almost always spot on.

aussiebandit · « **Reply #5 on:** March 20, 2007, 09:24:43 PM »

Quote from: "jfudo"

Quote from: "Red01"
It's common for Bandit speedos (and most Suzukis from what I can tell) to read a higher than actual speed. .

I believe this is the case for any new vehicle nowadays. All the manufacturers prefer to err on the side of caution. I don't think they want to be liable if the are wrong the other way. 10% error on the high side seems to be the standard (I should probably use the term 'high side' more carefully on a MC message board).

On the other hand, new vehicle odometers are almost always spot on.

In the Land of Oz our ADR's (Australian Design Regulations) allow for a 10% error on speedo's. Most manufacturers, as you say, do err on the cautious side. However, we have at least one State Government that only allows a 5% margin when issueing speeding fines. I also believe that most speedos are not accurate much below 40km/hr.