Before revision:  Thus, force production by myosin filaments is subject to switch-like control via tunable internal properties or mechanical context. We show further that for processive motors, the time required to build to stall (tbuild) scales with Fmax/(k*Vmax), where Fmax is the ensemble stall force and Vmax is the unloaded gliding velocity of the motor ensemble.
After revision:  Thus, force production by myosin filaments is subject to switch-like transitions from short attachments and small forces to high force-generating runs at threshold parameter values. Parameters representing skeletal muscle myosin, non-muscle myosin IIB, and Vmax is the unloaded gliding velocity of the motor ensemble.