The best designs are only as strong as their execution, which is why
we take great pains to ensure the quality and consistency of our materials.
All Kestrel frames, forks and components are built using unidirectional,
long-filament prepreg composites. We use long-filament carbon for the
superior strength you get from continuous fiber runs, and we can tune
each structure with careful fiber orientation.
Our pre-preg carbon-meaning it's pre-impregnated with resin-uses
a proprietary, toughened thermoset resin matrix, a fancy way of saying
we employ a tough, strong plastic to hold our carbon together.
There is an ideal composite/resin matrix ratio which provides the
strongest, lightest finished structure. If there isn't enough matrix,
the composite won't be adequately held together, reducing its structural
effectiveness. If there's too much matrix the part is heavier, and
the strength-to-weight ratio suffers since even our proprietary, thermoplastic-toughened
epoxy doesn't have the structural strength of composite (if it did,
we'd forego the carbon and just build bikes from plastic). By using
pre-pregs, we're able to ensure that optimal fiber/resin ratio in the
completed part, what you'd call lightest and strongest. This is the
preferred way of building carbon parts, which is why it's employed
in aerospace, Formula 1 racing and other high-performance applications.
Production Perfection | About
Carbon | Anatomy
of a Kestrel | Perfect Points