Pilot Escape System
Seats for the F-101 Voodoo were manufactured by either MacDonnell or Weber. Neither were zero-zero capable and neither were good at low altitudes (even though they were rated for 50 feet). They had a minimum speed limit of 120 knots (to add a forward vector and increase your distance (not time) in the air).
The F-101 Voodoo was equipped with the seat designed by Weber Aircraft. The seat was one of the earlier fully automatic seats.
Its capabilitys were from 500-25,000 feet and 125-425 knots and weighed 137 Lbs, 112 Lbs of which were ejectable. The seat is 23" wide 31" long, and 52" high. it was equipped wit the 1250 pound seconds M-3 catapult, and had a maximum 17Gz impulse on launch. The BA-18 parachute was automatically deployed after seat separation.
Maximum speed limit was 525 knots, so you can see that the rocket had a big initial kick to clear the tail, but it didn't last very long. The seats were designed and normally configured to accommodate a back-pack parachute and were equipped with an over land survival kit, but a parachute support bulkhead could be removed to provide additional equipment (life raft, hibatchi, etc.) if desired.