Michel,
I just came across your post regarding changing the front travel on your Rise to 170mm. I increased the fork travel on my Rise to 160mm. This improved the bike's handling and mostly eliminated pedal strikes in all but the most rocky terrain. I noted the following when I increased travel. I lost a very slight amount of nimbleness on tight sections of trail. I noticed no loss of handling on flat and fast flowy sections. It greatly improved handling in technical rocky sections, drops and steep downhill sections.
Note: Increasing my Rise's travel to 160mm on my Fox 36 (Change the air shaft assembly), increased the fork's length to the maximum allowed fork length specified by Orbea.
If you are not aware, Orbea's Rise Blue Paper (Owner's Manuel) specifies the maximum length of the fork you can use on your Rise. The maximum length is specified as 561mm (22.086 inches.) The fork length measurement is taken from the center of the front axle to the top of the crown, i.e. where the fork meets the bottom of the head tube. I've attached parts of the manual which specifically deal with fork travel.
If anybody has any questions on how to go about changing the travel on their Fox 36, shoot me a message.
View attachment 78208
View attachment 78209