- Location
- Massachusetts
[ QUOTE ]
And in DdRT TIP friction must be added on ascent and subtracted on descent for TIP loading.
[/ QUOTE ]
One quick note about this Spidey...even on descent, when the climber "stops" descending, the force at the TIP will increase beyond the climber's weight. It is the acceleration, and not velocity, that affects the force on the TIP.
Accordingly, when ascending, force increases at the beginning of each cycle (pump, stroke, etc.) and decreases (below weight) at the end. Conversely, force decreases at the beginning of each cycle and increase at the end when descending. It is far less severe when descending because most of us try (though I personally am not always successful) to descend smoothly; ascending is more cyclical by nature.
In the end, choose your TIP wisely, because this is a whole lot of math to run through when you're in the middle of it.
And in DdRT TIP friction must be added on ascent and subtracted on descent for TIP loading.
[/ QUOTE ]
One quick note about this Spidey...even on descent, when the climber "stops" descending, the force at the TIP will increase beyond the climber's weight. It is the acceleration, and not velocity, that affects the force on the TIP.
Accordingly, when ascending, force increases at the beginning of each cycle (pump, stroke, etc.) and decreases (below weight) at the end. Conversely, force decreases at the beginning of each cycle and increase at the end when descending. It is far less severe when descending because most of us try (though I personally am not always successful) to descend smoothly; ascending is more cyclical by nature.
In the end, choose your TIP wisely, because this is a whole lot of math to run through when you're in the middle of it.
