Campagnolo Eurus Rim Wheelset

700c clincher wheelset. Campy’s Eurus wheelset utilizes a “differential profile” where the front rim is only 26mm deep and the rear is 30mm deep. Unlike the older model Eurus that used a 30mm profile on both rims this differential profile offers several advantages. By keeping to a smaller 26mm profile up-front Campy was able to save weight and more importantly added stability in crosswinds. By keeping the rear at a higher 30mm profile Campy was able to attain significant aerodynamic advantages while also saving weight compared to the 30mm front wheel profile of its predecessor.

Another major improvement is the use of machining techniques similar to the Mavic Ksyrium SLs to shave down sections of the rim between spokes (spoke groups on the rear wheel) for further weight savings but without compromising the structural integrity of the rim. Add dynamic balancing special milling of the rim opposite the joint and you have a rim that is stable at very high speeds. Another rim feature is the lack of spoke holes to provide further weight savings (no rim tape required) but more importantly maximizing torsional stiffness.

The piece de resistance is no doubt the rear wheel. Utilizing the same G3 spoke pattern found on the fabulous Campy Bora wheelset the significant advantages over traditional spoke patterns are superior lateral stiffness and increased pedal power. Which makes sense really since doubling of the spokes on the drive train side (right side) helps offset the losses incurred by nasty wheel-dish. Another unique advantage to this G3 spoke pattern is that spoke tension can be lessoned and lighter spokes and rim sections can be used making for a better balanced and long lasting wheel. And speaking of spokes is Campy’s use of Ultra Aero bladed butted aluminum (16 front 21 rear) spokes. Finishing out the wheels is Campy’s Record-quality HPW hubs with oversized aluminum hub shells with aluminum axles.