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was cruising down michigans, i75 at the speed of traffic. I look down at my speedo and im indicated at 90mph. i'm in the far right lane and i get passed on the left. do you guys think this is a case of some aggressive drivers, or is my speedo way off?
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Way off, what's your gearing?"I'm sorry, I didn't mean to upset you when I called you stupid. I thought you already knew..."
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Speedo just being off, especially if you no longer have OEM sprockets. +-10% is normal...1998 Katana 750
1992 Katana 1100
2006 Ninja 250
2006 Katana 600 RIP - 130k milesComment
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stock gearing. guess i will compare speeds with an app on my phone in the morning. why would my speedo be off by so much?Originally posted by 92xjunker View PostComment
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My Kat and my VFR were off slightly when compared to the speed on the GPS, they were low on both bikes.KyleComment
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Pre kat speedo is cable driven off the front wheel. It's naturally about 10% off, showing you going faster than you are. That's with the stock 110 front tire.
Now days everyone uses the 120//70. It's not as large, so you get an even more out of whack reading off further.
So if your speedo is reading 90... and it's off at least 10%, then your actual speed was closer to 80... or less.
Krey93 750 Kat
Modified Swingarm, 5.5 GSXR Rear with 180/55 and 520 Chain, 750 to 600 Tail conversion, more to come. Long Term Project build thread http://katriders.com/vb/showthread.php?t=96736
"I've done this a thousand times before. What could possibly go wron.... Ooops!"Comment
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Mine is off too by 10% exactly. But I have the Post Kat and changed the rear tire for a wider one. Speedo says 100KM/H and I'm actually doing 90KM/HComment
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