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Speedohelaer Calibration Help

1315 Views 15 Replies 9 Participants Last post by  Rocky1
I just installed this unit on my bike yesterday and calibrated it to compinsate for factory error, 15/44 and 55 series rear; that puts it at an error of -12.6. I just paced a buddy on his bike (I know not a very accurate method) and compared to his I at 54 when he is at 60.

I was wondering what others are running for error corrction with similar set-ups and if I am more accurate then he is? It just seems like a large variation now.
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that seems about right. stock speedo's can be off by that much. I know mine was.
that seems about right. stock speedo's can be off by that much. I know mine was.
+1
I've heard as much as 10%. Which if your buddy is at 60mph, 10% of 60 is 6, which gives you 54. I think you're fine.
Find and ask a cop to do you a favor. Have him shoot you at 65, 55 and 50 to get a better judgment. I think you are pretty much spot on. My girl's gixxer is about 5-6 off from mine and I have a speedo healer she doesn't. Same goes with my bosses M109, his is about 5-6 off from mine.
sweet thanks for the input! i thought i was alright but wanted a lil confirmation, the cops up here in WA are cracking down hard this summer on bikes so i didnt want to give them a reason, and 6 over is a big reason here.
sweet thanks for the input! i thought i was alright but wanted a lil confirmation, the cops up here in WA are cracking down hard this summer on bikes so i didnt want to give them a reason, and 6 over is a big reason here.
I'm sure you could find one of those cops to help you out. Tell him your situation and tell him you want to make sure your speedo is spot on. If they don't help out find and pace yourself with some cars.
I have always used the pacing a car method to get it close then get a buddy to radar me to fine tune.
You guys are talking about your stock speedo reading higher than what your actually going right? Because I have that problem with my 07 1k. Id say its about %8-10 over.
You guys are talking about your stock speedo reading higher than what your actually going right? Because I have that problem with my 07 1k. Id say its about %8-10 over.
yes higher than what is actual.
I just installed this unit on my bike yesterday and calibrated it to compinsate for factory error, 15/44 and 55 series rear; that puts it at an error of -12.6. I just paced a buddy on his bike (I know not a very accurate method) and compared to his I at 54 when he is at 60.

I was wondering what others are running for error corrction with similar set-ups and if I am more accurate then he is? It just seems like a large variation now.
Sounds about right.

I used the speedohealer specs for factory error, +1 in the rear and a 55 series tire..Its within 1mph of my gps..

Stock my speedo was 5-6mph faster than what my gps was showing..
if you have a GPS unit... many of them record your top speed (or an iphone they have apps that can do it for free)... just reset it... get on the interstate and bring your bike up to where it reads 80 on the speedometer (make sure not to exceed it) and then read what your gps said your bike's top speed was... will be the most accurate way to tell...
I just installed this unit on my bike yesterday and calibrated it to compinsate for factory error, 15/44 and 55 series rear; that puts it at an error of -12.6. I just paced a buddy on his bike (I know not a very accurate method) and compared to his I at 54 when he is at 60.

I was wondering what others are running for error corrction with similar set-ups and if I am more accurate then he is? It just seems like a large variation now.
I just fitted one and attached a cheap 'hiking style' GPS as near to the speed display as poss and then adjusted it till they agreed. I then went out and 'cruised', (not on a Harley you understand;-) at 60, 80, 100, and 120 and all figures are within an mph of the GPS. Job done! Hope this helps...
I just fitted one and attached a cheap 'hiking style' GPS as near to the speed display as poss and then adjusted it till they agreed. I then went out and 'cruised', (not on a Harley you understand;-) at 60, 80, 100, and 120 and all figures are within an mph of the GPS. Job done! Hope this helps...
i HOPE he doesnt need your help anymore since he posted this 15 days ago.......:laugh:
i HOPE he doesnt need your help anymore since he posted this 15 days ago.......:laugh:
Sorry; being new to the forum and having only skimmed through the rules, I obviously missed the one about threads having an end date!!!
I did get it figured out the same day, but more posts are always welcome to help others in the future. Don't take it personal Workshirk, everyone razzes everyone, just part of the game. enjoy it and dish it back out.
yeah workshirk i was just bustin ur balls man :thumbsup:
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