Sebastian Roth is back with his amazing tunings. He had the lightest wheelset during some weeks but Gunter Mai beat him with his 704,4g Lew Pro VT-1 wheelset. The Lightweight Challenge 700 Sebastian had, weighted 721,3g… it’s about a few gramms difference so he went ahead to lighten further his hoops to beat the american
Well, the structure of the Challenge 700 is already pretty light and so he couldn’t save weight here. His front wheel was already lightened as much as possible too, it included the full
First he looked at the bearing: the Lightweight Obermayer rear wheels use a Tune mechanism, and obviously their bearings. Unfortunately the central XOT bearing designed by Tune is only
Second, the Campagnolo rotor was the only part that was not lightened at all: the biggest weight reduction came from here. The pawls were drilled, the body received an extra machinning
Third, the carbon axle received some lighter alloy end caps and ended the weight reduction at 24,2g.
His Challenge wheels now weight 697,1g and they were renamed Challenge 600.