Reserve loop

[lilchief 1]

Could someone with rigging experience tell me why some rigmanufactors want the cypress loop cutter at the bottom of the reservecontainer. while some(like Aerodyne) has it under one of the closingflaps to the resservecontainer(close to the top of the loop)?

"Once you have tasted flight, you will forever walk the earth with your eyes turned skyward, for there you have been and there you long to return." - Da Vinci
www.lilchief.no

[teason 0]

I believe it was Airtec that origionally determined where the cutter should be and the manufacturers had to follow their directions. A few years ago, I was a RWS having a conversation over the placement of the cutter in a Vector I vs. a Vector II.
Airtec wanted the cutter on the 1 flap if it was a VectorI with a Vector II PC and on the #3 flap if it was a VectorI PC. A Vector II with either PC had to be on the #1 flap.

They didn't get it, neither do I, but Airtec must have had a reason.

I would rather be a superb meteor, every atom of me in magnificent glow, than a sleepy and permanent planet.

[councilman24 37]

Differing styles of rigs have different loop lengths when properly closed. Remember that all of the loop above the cutter has to be pulled though the gromments above the cutter. A shorter loop and fewer gromments, such as in a Javelin or Wings, can allow the cutter to be in the bottom of the container in a more protected place. In a rig like a vector there are more gromments and in general a longer loop. So cutting it at the bottom may hinder deployment. Also the strength of varying reserve springs may be a factor. The Vector II PC has one of the strongest springs. Not necessarily better but stronger. Strong's Quasar now has spring steel in the flaps to aid in opening, not solely relying on the PC spring. All of these factors have to be judged.

I'm old for my age.
Terry Urban
D-8631
FAA DPRE

[JohnGraham 0]

Quote

Airtec wanted the cutter on the 1 flap if it was a VectorI with a Vector II PC and on the #3 flap if it was a VectorI PC. A Vector II with either PC had to be on the #1 flap.

Just wondering - what exactly do you mean by "on the #1 flap"? Is that above the #1 flap (ie between #1 and #2) or below the #1 flap (ie between the top of the PC and the #1 flap)?

[teason 0]

I just mean the spandex channel is attached to the flap. cutters are always placed on the reserve side of the flap or tray.

I would rather be a superb meteor, every atom of me in magnificent glow, than a sleepy and permanent planet.

[riggerrob 643]

Normally, Cypres cutter (elastic loop) sleeves are sewn to the underside of flaps.
For example, Vector III has the cutter on the under side of the first flap, so that it rests on top of the freebag, and two grommets/flaps below the pilot chute.
In another example, Sidewinder has its cutter on the underside of the #3 flap (right side) so that it rests on top of the pilot chute.