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Cycling

Assembling Evelyn Stevens' hour-record attempt bike


This article originally appeared on BikeRadar

American Evelyn Stevens (Boels Dolmans) will be attempting to set a new world hour record Saturday, and pro mechanic Daimeon Shanks pulled out all the stops — and much of the grease — in assembling the two bikes she will have at the velodrome in Colorado Springs, Colorado.

Instead of a pursuit-style track bike, the frameset is a Specialized S-Works Shiv TT that has been prepped for the track. The derailleur hangers and bottle-cage bosses were removed for aerodynamics, and spacers were added to the Zipp track disc’s hub to bridge the gap to the 130mm road frame spacing. The derailleur hanger was removed for aerodynamics, and spacers were added to the Zipp track disc’s hub to bridge the gap to the 130mm frame spacing. Stevens also has a team-only custom stem to get her position low, with a 12cm drop from the top of her saddle to the top of the arm rest pads.

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Every bearing in the bike is ceramic, arguably the fastest stock option out there. On Wednesday, though, Shanks overhauled every bearing, flushing out the factory grease and adding in only the slightest amount of special grease. Further, he removed a bearing seal on each bearing in the pursuit of those marginal gains.

“Less grease means less resistance for the bearing, which means less friction and more speed,” Shanks said. “Granted, this is very small change, because the bearings are already super fast.”

Similarly, at the pedals, Shanks flushed out all the stock grease, took a seal off the cartridge bearing, and put in Tri-Flow lubricant in place of grease.

You can read more at Cyclingnews.com





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