Pulleys for 2019 Update

Galibier Design - PulleysIt’s been a long haul, but the pulleys for our 2019 update are nearing completion.

We specified a runout tolerance of .0002″ to .0005″ (that’s 2-5 ten-thousandths) and our machinist has finally cleared his bench to develop a quality control process.

The pulley is a small part, but it would be a mistake to underestimate it’s contribution to the precision of the drive system, and it’s deserving of a rigorous quality control procedure.

 

Galibier Design - Pulleys

Holding these tolerances results in a degree of speed stability that’s well below the threshold of perceived pitch stability (wow & flutter).

In this domain, speed precision is perceived as lower distortion and for lack of better terminology, more musical engagement.

Shown here is a pulley chucked up to the lathe.

(click images for a larger view)

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Thom


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