Thanks for the replies. Dr., I saw your comments in another thread that Schlumpf + Rohloff + FireRoads = GoodThing. Is that "button" on the Schlumpf hard to hit when wearing SPD cleats (men's size US 13 shoe)?
The KMX website has
gorgeous profile shots. I didn't find the video but I haven't seen any steps near the logging roads I'm thinking about. It's the "up and over" maneuver I wonder about. I think it's Greenspeed that offers optional hand grips to assist getting in and out of the trike; I don't know if they would be useful for hefting the machine over obstacles.
I have an X-seam of 46" and the KMX's go to 44"
Edit:
http://www.kmxkarts.co.uk/community/videos/
US site:
http://www.kmxus.com/