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Speedo Healer

Old 06-23-2010, 09:03 AM
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Speedo Healer

I bought a speedohealer for my hawk, read alot that they show way to mouch on the clock. Installation wass easy took only 2 mins, but my question is, any one know how mouch the original speedometer show to mouch 8-9-10% ?

I know the right thing to do is to dyno run it, but aint one arround atm.


Thx.
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Old 06-23-2010, 09:05 AM
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I just used a GPS and speedohealer's online calculator to figure mine out. (I also did a sprocket swap, so I can't tell you what the OEM part of that was)

http://www.healtech-electronics.com/ click on speedohealer then online calculator
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Old 06-23-2010, 01:59 PM
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ride with a person with a known good speedometer (or follow a buddy's car), reset your trip meters to zero ahead of time. Ride a good 20 miles or so, then compare odometers. If your's reads 22 and your friend's reads 20, you are off by +10. IIRC, you would set the speedo healer to -(1-(20/22)) ~ -9.1%. Anyone?

Do another run afterwards to verify. JB
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Old 06-23-2010, 03:14 PM
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I used the local speed trailer set up by LOE's to check mine.
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Old 06-24-2010, 10:00 AM
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The calculation cheat sheat that came with the unit was pretty accurate. Give that a try first.
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Old 06-24-2010, 04:47 PM
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My Garmin attached to the tank via suction cup showed I was off 10%. I checked every 10 mph from 30 on up to 100. So when the Hawk showed 60 I was actually going 54 according to the GPS. Every reading indicated almost exactly 10 %. Hope this helps
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Old 06-24-2010, 06:06 PM
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Math is a funny thing. If your Garmin showed 54 mph and your speedometer showed 60mph, your speedometer is +11.1%, to get it right you must reduce it by -10.0%.

OK Tweety - what did I do wrong here


54x=60
x=60/54
x=1.11

60x=54
x=54/60
x=.90
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Old 06-24-2010, 07:17 PM
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Originally Posted by residentg View Post
Math is a funny thing. If your Garmin showed 54 mph and your speedometer showed 60mph, your speedometer is +11.1%, to get it right you must reduce it by -10.0%.

OK Tweety - what did I do wrong here


54x=60
x=60/54
x=1.11

60x=54
x=54/60
x=.90
I see where you are coming from. I am a teacher and understand those numbers, but not a math teacher. I was more interested in the estimation thing. More the Life Science type. I only care enough to keep myself from getting a ticket. I just needed to know how much over the indicated I could go and not get bothered by the LLEO.
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Old 06-24-2010, 08:14 PM
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do the distance test d=r*t, d and r are directly related.
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Old 06-24-2010, 08:34 PM
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Originally Posted by General Maximus View Post
I see where you are coming from. I am a teacher and understand those numbers, but not a math teacher. I was more interested in the estimation thing. More the Life Science type. I only care enough to keep myself from getting a ticket. I just needed to know how much over the indicated I could go and not get bothered by the LLEO.
Sorry to hijack, and I am interested in this as I have a speedo healer to put in. BUT...Holy SHiite! Another SH owner from Springfield, IL!!! YAY!
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Old 06-24-2010, 10:31 PM
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anybody had any experience with this one?

http://www.motomummy.com/store/produ...FRmfnAodDR0r5Q
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Old 06-25-2010, 02:21 AM
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Originally Posted by residentg View Post
Math is a funny thing. If your Garmin showed 54 mph and your speedometer showed 60mph, your speedometer is +11.1%, to get it right you must reduce it by -10.0%.

OK Tweety - what did I do wrong here


54x=60
x=60/54
x=1.11

60x=54
x=54/60
x=.90
Nothing wrong with your math...
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Old 06-25-2010, 02:24 AM
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Originally Posted by Mattaua View Post
anybody had any experience with this one?

http://www.motomummy.com/store/produ...FRmfnAodDR0r5Q
Nope, but considering the specs & price, go for it... The "mechanics behind" them is the same on all, reduce the modulated lenght of a square wave... ie PWM... So it really cant go wrong in too many ways...

EDIT: Only caveat is that doesn't look to be sealed from weather, which is bad... It is, so no problem...

Last edited by Tweety; 06-25-2010 at 02:59 AM.
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Old 06-26-2010, 06:26 PM
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Originally Posted by DSGcoupe View Post
Sorry to hijack, and I am interested in this as I have a speedo healer to put in. BUT...Holy SHiite! Another SH owner from Springfield, IL!!! YAY!
Gonna have to meet and ride some of the 3 good roads here in flat straight land!
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Old 06-27-2010, 11:43 PM
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Problem solved. Had it on a dyno run last friday. speedo wass 7,1% off what my speedo showed, so now it shows the right speed all the time

Also had it tested with hp and max speed.
115hp on back wheel
255 km top speed.

Gonna change the rear spocket now -2 teeth down, should be arround 275-285 top speed then, but time will show.
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