Umm, not to threadjack, but do they make intentionally heavy rims FOR training? wouldnt mind riding literally bulletproof rims for 1k mi, then switch back to my normal s500's (r500's? idk, idc) and feel the difference. i think itll be like going from my current rims to zipps, which i wont get until im well out of college also for a prescription for unlimited doses of HTFU. maybe i should put my clipless pedals on my varsity and call it good