Go Back   Motorcycle Forum > Motorcycle.Com General Discussion > Motorcycle Mods and Maintenance

Reply
 
Thread Tools
Old 04-20-2010, 12:40 PM   #1
BrentC
Registered Member
 
Join Date: Mar 2010
Posts: 21
Default ?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?
BrentC is offline   Reply With Quote

Sponsored Links Remove Advertisements
Motorcycle Forum
Advertisement
Old 04-20-2010, 01:39 PM   #2
seruzawa
The Toad

 
seruzawa's Avatar
 
Join Date: Nov 2001
Location: 8501 ft.
Posts: 17,461
Default

The speedo is run off the front wheel. Gearing changes don't affect it.
__________________
"Make no mistake, Communism lost a big argument - one we know today as the 20th century."
seruzawa is offline   Reply With Quote
Old 04-20-2010, 02:07 PM   #3
ejis
Founding Member
 
ejis's Avatar
 
Join Date: Jun 2007
Posts: 285
Default

First rule of adjusting a speedo: Make sure that each nut is appropriately secured before running at speed.
ejis is offline   Reply With Quote
Old 04-20-2010, 04:01 PM   #4
The_AirHawk
Founding Member
 
The_AirHawk's Avatar
 
Join Date: Jun 2007
Location: Leanin' Tower O' P-P-P-P-POWAAAAAAAAA!!!!
Posts: 11,491
Default

Quote:
Originally Posted by seruzawa View Post
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.........
__________________
Parfois, on fait pas semblant
Sometimes, it's not pretend
Oderint Dum Metuant
Let them hate so long as they fear
политики предпочитают безоружных крестьян
Politicians Prefer Unarmed Peasants
Nothing to see here, Citizen. Move along now...
The_AirHawk is offline   Reply With Quote
Old 04-20-2010, 04:48 PM   #5
BrentC
Registered Member
 
Join Date: Mar 2010
Posts: 21
Default

Yeah, it reads about 10% over. How do I fix it?
BrentC is offline   Reply With Quote
Old 04-20-2010, 04:51 PM   #6
seruzawa
The Toad

 
seruzawa's Avatar
 
Join Date: Nov 2001
Location: 8501 ft.
Posts: 17,461
Default

Quote:
Originally Posted by BrentC View Post
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.
__________________
"Make no mistake, Communism lost a big argument - one we know today as the 20th century."
seruzawa is offline   Reply With Quote
Old 04-20-2010, 06:20 PM   #7
The_AirHawk
Founding Member
 
The_AirHawk's Avatar
 
Join Date: Jun 2007
Location: Leanin' Tower O' P-P-P-P-POWAAAAAAAAA!!!!
Posts: 11,491
Default

Quote:
Originally Posted by BrentC View Post
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..........
__________________
Parfois, on fait pas semblant
Sometimes, it's not pretend
Oderint Dum Metuant
Let them hate so long as they fear
политики предпочитают безоружных крестьян
Politicians Prefer Unarmed Peasants
Nothing to see here, Citizen. Move along now...
The_AirHawk is offline   Reply With Quote
Old 04-21-2010, 07:27 AM   #8
Kenneth_Moore
Registered Member
 
Kenneth_Moore's Avatar
 
Join Date: Jun 2007
Location: VIsiting the GIft Shop in the Pit of DIspair
Posts: 7,118
Default

Quote:
Originally Posted by seruzawa View Post
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.
__________________
www.kennethmoore.org
Kenneth_Moore is offline   Reply With Quote
Old 04-21-2010, 07:53 AM   #9
pushrod
Founding Member
 
pushrod's Avatar
 
Join Date: Nov 2001
Location: Baja 'Bama
Posts: 3,642
Default

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.
pushrod is offline   Reply With Quote
Old 04-21-2010, 10:59 AM   #10
MOKE1K
Registered Member
 
MOKE1K's Avatar
 
Join Date: Jul 2008
Location: Kalapana, Big Island
Posts: 3,994
Default

Speedo Healer like Klazy says.
__________________
"YOU CAN'T BOLT ON SKILL"
MOKE1K is offline   Reply With Quote
Reply


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off