Motorcycle Racing Forum

Racing Discussion => Racing Discussion => Topic started by: Decreasing_Dave on March 04, 2003, 08:34:07 AM

Title: Geometry Question...new math??
Post by: Decreasing_Dave on March 04, 2003, 08:34:07 AM
I have an R6 and I've been running Dunlops (dumb-wops).  The size, 120/70/17.

The question, What will I have to do to my forks (adjust) to equal the same geometry with the Michelins??

TIA
D. Dave
Title: Re: Geometry Question...new math??
Post by: Super Dave on March 04, 2003, 05:58:58 PM
Mail?....
Title: Re: Geometry Question...new math??
Post by: MightyDuc Racing on March 05, 2003, 12:21:02 PM
You mean you have to change things on your bike for that???   I'm screwed.


 ;D
Title: Re: Geometry Question...new math??
Post by: Litespeed on March 05, 2003, 01:37:15 PM
I make it a point to never change anything and so far it has worked pretty well.  I would suggest taking measurements and determining which direction to go based on them before swapping but don't make the actual change until you have tried it.  I put the 190/55 rear on my RC51 and knew that the extra inch of height in the back would require a change.  After riding it I decided I liked it better than before and left it with the old settings on the new tires.
Title: Re: Geometry Question...new math??
Post by: r6_philly on March 06, 2003, 12:58:50 PM
We normally drop 6-8 mm on the front by sliding the tubes upward through the triples to compensate for the 70 series front.