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Author Topic: I want my speedometer to read actual mph.  (Read 578 times)

Offline jimbowilly1960

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I want my speedometer to read actual mph.
« on: August 04, 2019, 08:26:59 AM »
Hi,
My 2016 Hayabusa's speedometer reads right around 13-15 mph less than my actual speed. My speedometer shows I'm traveling at 93 mph and I'm actually traveling 79 mph.
Is there a way to adjust the speedometer to provide me with the actual mph?
Thanks,
Jimbo
 

Offline MREDDIEB

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Re: I want my speedometer to read actual mph.
« Reply #1 on: August 05, 2019, 07:33:53 PM »
Back in the day (10yrs), they had a device called "The Speedo Healer." It was used to calibrate your speedometer.  Sprockets and tire size all play a part. I need to find a radar sign an check mine.
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Offline jimbowilly1960

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Re: I want my speedometer to read actual mph.
« Reply #2 on: August 05, 2019, 08:50:08 PM »
I have been told that if I keep my speed under 80 mph. The police will not pay much attention to my speed.
I am originally from Michigan but now live in New York state.
So in my traveling from eastern Upstate New York to western Michigan my wife and I have driven several different vehicles.
And keep my speed around 78/79 mph while driving our current car or pickup and keep up with general traffic just fine. But with my Busa I seem to have to drive around 93/94 mph to keep up with the other cars.
I am running recommended size tires and stock sprockets.
I asked the Suzuki dealership about my speedometer. They say most motorcycles speedometers are set up to show you are driving faster than your actual speed. And this percentage increases the faster you ride. They said even though my speedo's says 0 to 180 mph, the top speed my Busa will achieve is only 150 mph. When I told them the fastest I've had my Busa was 130 mph. The tech told me I was really only going 113 mph.
I am waiting for a mount for my phone. So I can see my speed with my phone's GPS app. This is the only way I can figure compensate for my speedometer.
Hoping someone will chime in with some good information regarding this issue.
Thanks,
Jim


Offline ADMIN

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Re: I want my speedometer to read actual mph.
« Reply #3 on: August 05, 2019, 10:17:37 PM »
All bike Speedos are notoriously optimistic.

Use a GPS heads up display  app with phone on a ram mount. Or a GPS.

I need to get my screen replaced.
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Offline jimbowilly1960

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Re: I want my speedometer to read actual mph.
« Reply #4 on: August 06, 2019, 03:32:18 AM »
How is the phone mount attached to your bike?
Looks like I might need a torque wrench?
Jimbo
« Last Edit: August 06, 2019, 03:39:00 AM by jimbowilly1960 »

Offline ADMIN

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Re: I want my speedometer to read actual mph.
« Reply #5 on: August 06, 2019, 10:27:10 AM »
:lol:

RAM MOUNT
Still privately owned and operated by Hayabusa owner enthusiasts. 2002, small  a/a kit, CF body

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William Bill Warner
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Offline jimbowilly1960

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Re: I want my speedometer to read actual mph.
« Reply #6 on: August 06, 2019, 06:17:54 PM »
Cool! Thank you.

Offline Gerald

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Re: I want my speedometer to read actual mph.
« Reply #7 on: August 12, 2019, 06:11:30 PM »
I've had a speedohealer on my 2000 for years, works really good!

Offline jimbowilly1960

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Re: I want my speedometer to read actual mph.
« Reply #8 on: August 12, 2019, 07:29:11 PM »
Since the outside diameter of a set of tires effects the speedometer's accuracy.
Seems like the the easiest option would be to change out the speed ring sensor.
So with this in mind while searching around on the internet.
I found this article https://www.cycleworld.com/sport-rider/how-to-fix-calibrate-inaccurate-motorcycle-speedometer/
« Last Edit: August 12, 2019, 07:46:24 PM by jimbowilly1960 »