Triple clamp offset and the pro’s and con’s of 25 vs 45 mm on a triple ( RGS to be exact )

As Cam said the easiest way to see what's happening to the trail dimension is to graph it or do a scale drawing. It's all relative, with our older bikes an easy to achieve change is not going to suddenly have the bike radically unstable. When I first went to longer rear shocks I made a gadget that allowed me to use my standard length shocks but jacked the rear top shock mount 30mm higher. The first time I rode with it had the bike steering and tipping in a lot faster but still no tankslappers, but the seat height was hard to deal with. Just like the first Gen long-travel suspension Dirtbikes. Not practical in the real world. If you want to learn more buy a copy of https://motochassis.com/product/book-motorcycle-handling-chassis-design/
 
There is stuff in that book that will blow your mind and completely change what you intuitively think about bike chassis design.
 
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