Our Level Two Transmissions parts have proven very reliable up
to torque levels around 450-630 ft/lbs and our return rate demonstrates
this. We experience less than 1% failure on our Level Two units.
applications with greater torque output than this, the input shaft/drum
and sun shell assembly strength must be addressed, which is what
we do with our Level Three Transmissions. Anyone who has built
serious Th-700R4 Transmissions has, at some time experienced failure
of one or more of these components.