News:

If you're new to this message board, read THIS!

Main Menu
Inzane 17

Rearend gearing

Started by F-106, Tue 30, Mar 2010, 20:30:42

Previous topic - Next topic

F-106

Is there any differance in gearing between a tourer and standard? Reason for my question is my ridding budddy's 98 tourer turns 74 mph at 3200 rmp. My 01 standard runs at 65 mph at 3200. All these reading are taken from the stock valk speedo and tac's. Any thoughts?

Disco

Which rear tires are on the bikes?
2000 Bumblebee Tourer, 98 Yellow & Cream Tourer, 97 Rescue blower bike
22 CRF450RL, 19 BMW R1250RT
78 CB550K, 07 Helix
71 MT50 Trailhopper


VRCC 27,916                  IBA 44,783

Valkpilot

Quote from: Dave in Frisco (TX) on Tue 30, Mar 2010, 20:37:45
Which rear tires are on the bikes?

And which on the front?

Rear will affect tach readings, front will affect speedo.  Either (or both) could be influencing the difference.
VRCC #19757
IBA #44686
1998 Black Standard
2007 Goldwing 
 
   

F-106

My 01 has Avon venoms and Verns is running E-3's. Both bike are running stock size tires.

f6john

     I have noted these same differences between my Valk and others that have stock size tires front and rear. It "seems" as if the gearing must be different but I have always assumed that it was in the the mechanicals of the tach and speedo.

Gryphon Rider

The gearing is the same, Standard, Tourer, and Interstate.  One way to experience this is to ride close together at the same speed and listen for the exhaust sounds to harmonize.  It's fun to have four Valks doing this side by side on a four lane highway.

f6john

Quote from: Gryphon Rider on Tue 30, Mar 2010, 21:59:25
The gearing is the same, Standard, Tourer, and Interstate.  One way to experience this is to ride close together at the same speed and listen for the exhaust sounds to harmonize.  It's fun to have four Valks doing this side by side on a four lane highway.



     So what's with the different engine speeds at the same Mph???

Valkpilot

Quote from: f6john on Tue 30, Mar 2010, 22:09:32

     So what's with the different engine speeds at the same Mph???


Many possibilities:

Differences in actual tire dimensions manufacturer to manufacturer.
Differences in wear on the tires
Speedometers showing diffenent indicated speeds for the same RPM

One way to test the last one is to use a GPS to compare actual speed to indicated speed.  Metric bikes are notoriously incorrect.  Mine consistently indicates about 10% faster than I am actually going.
VRCC #19757
IBA #44686
1998 Black Standard
2007 Goldwing 
 
   

lee

womp womp womp womp womp womp womp womp womp womp: big difference in engine RPM

womp                  womp                   womp                  womp: getting closer in engine RPM

wooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo
same engine RPM now look at speedo and tack. 

Is that what you meant Gryphon Rider?   :crazy2: :crazy2: :crazy2: :crazy2:
Time is not what is taken but what remains.
C. Drewry

Gryphon Rider

Quote from: lee on Wed 31, Mar 2010, 09:02:35
womp womp womp womp womp womp womp womp womp womp: big difference in engine RPM

womp                  womp                   womp                  womp: getting closer in engine RPM

wooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo
same engine RPM now look at speedo and tack. 

Is that what you meant Gryphon Rider?   :crazy2: :crazy2: :crazy2: :crazy2:
Yeah, that's what I meant.  I just don't have the technical vocabulary to describe it as precisely as you did.  ;D

Jess from VA


tlanz