Author Topic: Speedometer error:  (Read 6531 times)

Offline Oldbutslow

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Speedometer error:
« on: August 02, 2009, 05:50:55 PM »
Guys:  New to the forum and just brought home an '07 Bandit 1250. Coming home, what is the ridiculous amount of speedometer error on this bike. I'm riding 85 and getting passed by everybody. I'm guessing at least 10%. Hello new rear sprocket!   ,BK
'07 B1250, '09 TU250X, '01 KE100

Offline Dink_1170

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Re: Speedometer error:
« Reply #1 on: August 02, 2009, 06:05:30 PM »
Most report the error to be approx. 8%

Dink
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07 Bandit1250S - "Bonnie"
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Offline billincentraljersey

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Re: Speedometer error:
« Reply #2 on: August 02, 2009, 11:40:53 PM »
Welcome New Guy ... There are plenty of threads on this topic.  If you decrease the rear sprocket teeth count by 8%, or what ever % of error, the speedo will be corrected.  Most people wants lower gear but a few of us wants a higher gear for a more relax ride when doing long distance at high speed.  Engine vibration and noise for long hours at high rev drains the mental energy.  That little bit of more relax cruising may extend the long day a little bit more.  It may also put the engine speed at the peak torque and HP when cruising at the high speed.  Riding across the roads out west, Mojave, for example, you'll be going at 90-100 mph for extended time.  RPM is high at that speed.
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07 B1250ABS, 90 Kawasaki Concours, 84 Moto Guzzi V65SP, 77 Yamaha XS360, xx-77 NYC Subway

Offline Oldbutslow

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Re: Speedometer error:
« Reply #3 on: August 03, 2009, 12:44:13 AM »
My previous bike was a Kawi Z1000, and I geared it +1/-3, so you can see I'm a big fan of overgearing. I want the efficiency and smoothness that gearing up provides. I tried a search and it came up donuts. From what I can tell, the only direction you can take with this bike is to go down on the rear. Not a big fan of a new chain, so I'll just go -3 and leave it at that.   ,BK 
'07 B1250, '09 TU250X, '01 KE100

Offline Jester

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Re: Speedometer error:
« Reply #4 on: August 03, 2009, 11:47:38 PM »
As Bill said, there are plenty of threads on this. With my GSF1250SAK7 the faster I go the more its out, so I use my GPS.
2007 Suzuki Bandit GSF1250S ABS
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Offline Bandit1250

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Re: Speedometer error:
« Reply #5 on: August 07, 2009, 01:02:42 PM »
My speedo's off about 10mph at highway speeds.......helps me to not get a ticket though.  :bandit:
Past Pleasures....all memories
2006 Triumph Sprint ST1050
2004 Kawasaki ZRX1200R
2002 Kawasaki ZRX1200R
1984 Honda V651100 Sabre
1986 Kawaski Vulcan 750N
1982 Suzuki GS750EZ
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Offline Oldbutslow

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Re: Speedometer error:
« Reply #6 on: August 14, 2009, 01:34:57 AM »
Gearing down bought me a ticket two weeks ago!
'07 B1250, '09 TU250X, '01 KE100

Offline dhcolesj

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Re: Speedometer error:
« Reply #7 on: August 14, 2009, 06:40:10 PM »
HUH?  :shock:  Loud Muffler or ???
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'08 1250S Bandit

Offline Oldbutslow

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Re: Speedometer error:
« Reply #8 on: August 21, 2009, 10:38:47 PM »
HUH?  :shock:  Loud Muffler or ???

Good question! I was on a Z1000 Kawi in the middle of B.F.E. Nebraska just minding my own business. The Kawi did have a full Micron, so it was loud, but not Harley loud. Anyhoo, I was doing 66 in a 60 when this State Trooper decided to ruin my morning. I'm convinced if I was on a cruiser, or B1250, I would have never had this grief. That's my half of the story.  ,BK
'07 B1250, '09 TU250X, '01 KE100