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Re: wheel technology: We are using the same rim/tire interface the road bikes have been using since Dunlop invented the clincher tire back in the 1800s. The rim wall was designed to retain a tire at a high pressure and with mostly vertical loads. We are using tires which balloon out of the rim -sometimes doubling or almost tripling the rim's inner width- and the carbon manufacturers want to sells us hookless rims as "the shit"...
I say come back when you have a decent solution, other than stuffing foam in my wheels. I maintain the inner wall of a rim should be angled out and serrated/hooked to grab the tire shoulder, and the edge of the rim wall should be bulbous, to absorb the impacts and avoid the dreaded snake bite. The current aluminum extrusion technologies should be enough to create a light and resistant rim, and a better rim/tire interface.
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