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BrentC · 04-20-2010, 11:40 AM

If this was a Jeep, I could tell you everything you need to know, but this isn't a Jeep---it's a 1995 CBR600 F3.

How do I adjust the spedometer to match the new gearing??????

Is there some replacement gear for the spedo interface?

seruzawa · 04-20-2010, 12:39 PM

The speedo is run off the front wheel. Gearing changes don't affect it.

ejis · 04-20-2010, 01:07 PM

First rule of adjusting a speedo: Make sure that each nut is appropriately secured before running at speed.

The_AirHawk · 04-20-2010, 03:01 PM

Quote:

Originally Posted by seruzawa

The speedo is run off the front wheel. Gearing changes don't affect it.

+1.

To add: It likely already reads about 8% to 15% too-high, depending on what speed you're attempting to read from it to boot.........

BrentC · 04-20-2010, 03:48 PM

Yeah, it reads about 10% over. How do I fix it?

seruzawa · 04-20-2010, 03:51 PM

Quote:

Originally Posted by BrentC

Yeah, it reads about 10% over. How do I fix it?

Usually you don't. Just subtract 10% in your head. 80=72, 70=63, etc.
Someone might have a fix if you search the web for your specific bike, though. Good luck.

The_AirHawk · 04-20-2010, 05:20 PM

Quote:

Originally Posted by BrentC

Yeah, it reads about 10% over. How do I fix it?

All the '80s and '90s Hondas are like that (and many Yamahas, Suzukis, Harleys, a few Kawasakis......). People paid extra for that Honda Quality, though..........

Kenneth_Moore · 04-21-2010, 06:27 AM

Quote:

Originally Posted by seruzawa

The speedo is run off the front wheel. Gearing changes don't affect it.

Yoostabee, but not so much anymore. Speedos are now too clever for their own good; electronics based on gear and RPM.

OP: google "speedo healer" for several links on companies who make electronic boxes that correct the factory or other speedometer errors. Some are user adjustable, other fixed.

Also, there are a couple guys who make new faceplates for bike speedos, but usually for stock gearing/wheelsize corrections.

pushrod · 04-21-2010, 06:53 AM

If your actual speed is important to you, the cheapest 'fix' is to put a Sigma bike computer on. Dead accurate (assuming you enter the appropriate tire size), and they also provide a bunch of other info, like max speed, trip distance, time, etc..

I use the 1606L, IIRC. I don't advise getting one of the wireless ones, as they may be affected by the ignition system.

MOKE1K · 04-21-2010, 09:59 AM

Speedo Healer like Klazy says.

04-20-2010, 11:40 AM	#1
BrentC Registered Member Join Date: Mar 2010 Posts: 21	?Spedo Adjustment? If this was a Jeep, I could tell you everything you need to know, but this isn't a Jeep---it's a 1995 CBR600 F3. How do I adjust the spedometer to match the new gearing?????? Is there some replacement gear for the spedo interface?

04-20-2010, 12:39 PM	#2
seruzawa Robby Join Date: Nov 2001 Location: 8501 ft. Posts: 16,803	The speedo is run off the front wheel. Gearing changes don't affect it. __________________ I've seen things you people wouldn't believe. Attack ships on fire off the shoulder of Orion. I watched c-beams glitter in the dark near the Tanhauser Gate. All those moments will be lost in time, like tears in the rain.

04-21-2010, 06:53 AM	#9
pushrod Founding Member Join Date: Nov 2001 Location: Baja 'Bama Posts: 3,478	If your actual speed is important to you, the cheapest 'fix' is to put a Sigma bike computer on. Dead accurate (assuming you enter the appropriate tire size), and they also provide a bunch of other info, like max speed, trip distance, time, etc.. I use the 1606L, IIRC. I don't advise getting one of the wireless ones, as they may be affected by the ignition system. __________________ You would not understand, this is not how I am... I have become - Comfortably Numb.

04-21-2010, 09:59 AM	#10
MOKE1K Registered Member Join Date: Jul 2008 Location: Kalapana, Big Island Posts: 3,956	Speedo Healer like Klazy says. __________________ "YOU CAN'T BOLT ON SKILL" "The only thing limiting your bike, is you" We survived Bush you'll survive Obama! "the most fundamental fact about the ideas of the political left is that they do not work. therefore we should not be surprised to find the left concentrated in institutions where ideas do not have to work in order to survive." --thomas sowell

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04-20-2010, 01:07 PM	#3
ejis Founding Member Join Date: Jun 2007 Posts: 285	First rule of adjusting a speedo: Make sure that each nut is appropriately secured before running at speed.

04-20-2010, 03:48 PM	#5
BrentC Registered Member Join Date: Mar 2010 Posts: 21	Yeah, it reads about 10% over. How do I fix it?