Apparatus and methods for use in measurement of applied load at a chainring
assemblage of a pedal powered device are provided. The apparatus includes a link
adapted for interposition between a chainring attachment site located on a conventional
chainring mount, or spider, and a corresponding chainring attachment locale at
a conventional chainring. The link has a geometry and/or material composition selected
to accommodate measurement of load exhibited between the attachment site and the
corresponding chainring attachment locale. Means for measuring the load exhibited
thereby is associated with the link.