Estimate of how much over the speedo is? - K-Bikes.com - Excellence in Motion
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post #1 of 16 (permalink) Old May 29th, 2009, 9:53 pm Thread Starter
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Estimate of how much over the speedo is?

I am riding a K1300GT this weekend in Norcal. In the region of 50-80mph, how high does the speedo read? I am used to my LT's 5mph, and knowing this I can sit just under 10 over on the freeway sections, with some surety that the cops won't stop me.

Not so concerned once I hit Hwy 36! and the Wild Rivers loop :-)

Oh boy, this is going to be a fun weekend.

TIA.

Ralph

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but I left my biking heart along the Scenic Byways of America.....

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Today of past regrets and future fears." ....Omar Khayyam
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post #2 of 16 (permalink) Old May 29th, 2009, 11:48 pm
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My K1200GT speedo is dead nuts on, per GPS. I wouldn't count on any built-in error.
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post #3 of 16 (permalink) Old May 29th, 2009, 11:53 pm
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My '07 GT is 3 mph over per GPS.

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post #4 of 16 (permalink) Old May 30th, 2009, 1:50 am
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My '07 is within 1 mph of the gps all across the range (at least up to about 150 or so). It's also within 1 mph of those random "Your Speed Is:" signs that I sometimes come across at more sedate speeds.

I also ran the odo check over a 100-mile straight stretch of road (what else are you supposed to do on the boring bits of I-5?). The odo was less than 2/10's off over the whole distance.

Of course, than can shift slightly with different tire brands, but it's a damn sight closer than the LT ever was.

Enjoy 36. That's an awesome road, and still one of my favorites.


Ken
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post #5 of 16 (permalink) Old May 30th, 2009, 7:32 am
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My 08 is 3-4mph over the GPS

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post #6 of 16 (permalink) Old May 30th, 2009, 8:57 am
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Mine is around 3mph over above 35mph. Under 35mph it is the same as my Zumo550.

Wayne

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post #7 of 16 (permalink) Old May 30th, 2009, 11:31 am
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Mine seems to be somewhere about 2 to 3% faster than the gps above 40 or so. I've gotten so used to looking at the Zumo though I hardly ever look at the speedo any more.

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post #8 of 16 (permalink) Old May 30th, 2009, 3:54 pm
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My 1300Gt is about 2 to 3 mph over at 80mph and 3-4 over at 110.

Larry
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post #9 of 16 (permalink) Old May 30th, 2009, 5:37 pm
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Quote:
Originally Posted by larrykay
My 1300Gt is about 2 to 3 mph over at 80mph and 3-4 over at 110.
Similar to my K1300R. I had a race logic (professional race logging system) on it while over at the Nurburgring, and found:
30mph = 5mph over
50mph = 3mph over
100mph = 4 mph over
125mph = 3mph over
150mph = 2mph over
170mph = 1mph under

I suspect speedos are all a bit different, even on the same models. Speeds above are of course approximate (as a rough conversion from metres per second the race logic gives you, plus I obviously had to eye-ball the speedo).

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post #10 of 16 (permalink) Old May 31st, 2009, 12:04 pm
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Quote:
Originally Posted by grifscoots
My '07 GT is 3 mph over per GPS.

Ditto here. I've come to rely on the GPS if I really want to know my true speed (unless I'm out of line of sight with the satellites).
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