Ritchey Cranks

RITCHEY LOGIC ROAD CRANKS

What made you think Tom would leave Road cranks alone? Small changes in the spider and its drilling lead to another iteration of this successful crank. The arms are again cold forged and use all the same techniques described in the previous two models. The spider arms are slightly longer to use the 130mm bolt center diameter. Logic Roads come with to aluminum chainrings. The outer is die-cut from 3.57mm thick aluminum plate, that is turned on lathe to machine the tooth area to a 2.11mm thickness and taper the front and backs of the teeth.

The outer chainring has an aluminum anti-jam pin driven into it. The inner is die-cut from 3.57mm thick aluminum plate, turned to 2.06mm thickness at the tooth area and to taper the teeth to the needed point. A set of five nickel plated fixing bolts have 5 mm hex fittings for removal are used to secure the chainrings. Chrome plated, press- in, plastic arm dust caps are included, crank bolts are not. We found the Ritchey Logic Road cranks had a Bike-Pro Q measurement of 142mm. The Logic Road is available in 170mm, 172.5mm 175mm, 177.5mm or 180mm, with 39-53 or 42-52 chainrings. The weight of a 172.5mm set of Logic Roads is 652 grams.

	Length-70-72-75-77-80 - Rings 39-52=3 42-52=2 $ Price in Catalog



Ritchey Logic Tandem Cranks

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