I just replaced the Manitou Axel, 100mm travel, fork on my 05 Rockhopper. So now I've got a used Manitou Axle hanging around. I've got an old, about year 2000 or 01, Hard Rock beater MTB that I'm rebuilding. The Hard Rock has the original SR Suntour 7700, spring fork about 80mm travel. I know the Axle is an entry level fork, but with oil damping and heavy duty springs that were installed, it has to be a big improvement over the Suntour fork.
My question is, how will the increase of 20mm (or more) in the travel affect the handling of the Hard Rock? Will it change the geometry of the bike so that the handling degrades or will there be little or no effect? Has anyone else made a similiar change?
Thanks for your input.