Bandit Alley

GENERAL MOTORCYCLE FORUMS => GENERAL MECHANICAL & TECHNICAL => Topic started by: Baljo on March 17, 2007, 12:11:57 AM

Title: Speedometer Off by about 20%
Post by: 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 :beers:
Title: Speedometer Off by about 20%
Post by: chupacabra 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  :lol:
Title: Speedometer Off by about 20%
Post by: jeepskate99 on March 19, 2007, 09:02:14 PM
I have been using a Garmin Quest for a speedo.  Quite accurate.
Title: Speedometer Off by about 20%
Post by: Red01 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.
Title: Speedometer Off by about 20%
Post by: jfudo 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.
Title: Speedometer Off by about 20%
Post by: aussiebandit 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.