I bought a set of Racing Ralph CX clinchers a couple of weeks ago. I was going to put them on my single speed mountain bike and try it for cyclocross. I decided against that and, late last week, mounted them on my cross training wheels. I mounted them ghetto tubeless on Mavic Open 4 rims. They are predecessors to the Open Pro rims. I used Stan's yellow tape and a cut up 26" tube with Stan's sealant. They aired up and sealed easily. I raced them yesterday in the second Klamath Falls race. It was a perfect test for them. Lillian, the race promoter, had told me that the course would be flat and fast. It was neither. It was rocky and hard dirt with a lot of loose sand
on the surface. There was one section that was about 20 yards of big, loose rocks. Rocks 4 or 5 inches in diameter. It scared me but I figured out just go pretty fast and hang on. There were a lot of barriers. Some of them led to slightly uphill sections with loose dirt. It was a physically demanding course. I ran the tires at 40 psi. They survived the banging through the rock section and provided traction in the loose sections. And they held air the whole race. A lot of people flatted on tires with tubes.Oh, by the way, I put the hurt on Vern.








