Sampson Cranks


	

SAMPSON MOUNTAIN CRANKS

A variation in the machining of the Sampson Road cranks produces Sampson Mountain cranks. The Mountain cranks are again CNC machined of 7075-T6 billet aluminum in the same shape as the Road type. The variation occurs in the spider and the hidden fifth arm. The spider has two holes drilled through each of its four arms, the outermost is tapped with threads for an inner fixing bolt set. On the inner arm, 90mm from the B/B spindle center is a slight notch cut to allow clearance for the front derailleur when the chain is shifted to the outer chainring. The "hidden fifth arm" section of this arm is the immediate 1 1/2" adjoining the spider. There are two holes bored and tapped with threads for the inner chainring fixing bolts, both aluminum bolts are provided. One is 12.6mm long to hold in place the outer and middle. The other is longer at 20mm to hold inner chainring. Several aluminum spacers are included with the crankset which accommodate the thicknesses common to most chainring combinations.

		




This crankset is drilled for the middle and outer chainrings to have a 110mm bolt center diameter. The inner is drilled for a 74mm BCD. Three SR Roundtech chainrings are included all anodized Black. The included sizes are 24T, 36T and 46 teeth. Like the Road version the Sampson Mountain cranks are available only in a high polished finish, leaving a mirror-like un- anodized Silver. As with the Road cranks, the Mountain set doesn't come with crank bolts or dust caps, and care should be made to clean out any residual polish from the dust cap threads. The Mountain cranks are available in either 175mm or 180mm length. The weight of a complete 175mm Mountain crankset is 583 grams. All the bolts and spacers weigh 21.5 grams, the 24T chainring weighs 17.5 grams, the 36T weighs 34.5 grams, the 46T weighs 71 grams, and the arms weigh 439 grams.

	Length-75-80   $ Price in Catalog



Sampson Compact Drive Cranks
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