I got recently a new bike and it came with non name ("Silver alloy, CNC brake track") single wall 406 rims that have a deep and wide channel. When I deflate the tube, the tire comes off easily, no tools required.
With the Alex DM18 that came with my old bike, removing the tires was a struggle, even with tire levers.
The Alex rims are double walled and I guess that this considered to be a feature but I prefers the new rims because it is so easy to remove the tires and the channel keeps the rim tape in place (with the Alex rims I had to use Vello Plugs because the tape was shifting to the side).
Conclusion, a no-tool tire removal is possible, at least with some rims.
Now that I think about it, the Scorchers that I could not fit on my Alex rims few months ago may fit on the new rims. I will give it a try.
Edit: I put the Scorcher on the new rim using Jur's method. No tools, no sweat no tears. With the old rim, I could not fit the Scorcher even with levers and Var tool. The choice of rim seems to make a lot of difference.
Last edited by kamtsa; 12-22-09 at 08:17 PM.