Thanks for that! I have arthritic knees also (and a torn/detached meniscus now) but I've so far been able to bike ride outdoors for a few hours at at time. (I started spinning as a part of rehab prior to going out on the trails). I have to transport my bike to the trailhead, so lifting the bike up on the bike carrier is something I need to consider too. I've avoided the trailheads that require a steep climb. I see some conversion kits allow you to detach the battery for transport - that may be something to look at too.