Slider on a ram air parachute

Recently somebody made a comment about my emergency ram air parachute
and whether or not it has a slider to to slow deployment. I checked with
my rigger and jump instructor and here's what he said:

Your parachute has a slider. The maximum airspeed for slider-off deployments is 65 mph. In an aircraft emergency, you will almost always be deploying at a higher speed than that, so the slider is absolutely necessary. Deploying slider-off at high speed can damage the gear and maybe the jumper. Your parachute is designed to open as fast as possible without causing damage. It should take about 3 seconds/300 feet for it to open in most situations. Exactly the same as a round parachute of roughly equivalent area.


--
Dan Marotta