mark

Members
  • Content

    1,893
  • Joined

  • Last visited

  • Days Won

    1
  • Feedback

    0%

mark last won the day on October 12 2019

mark had the most liked content!

Community Reputation

56 Good

Gear

  • Main Canopy Size
    120
  • Main Canopy Other
    X-VX
  • Reserve Canopy Size
    143
  • AAD
    MarS Parachute AAD

Jump Profile

  • Home DZ
    Skydive Twin Cities
  • License
    D
  • License Number
    6108
  • Licensing Organization
    USPA
  • Number of Jumps
    7400
  • Years in Sport
    37
  • First Choice Discipline
    Formation Skydiving

Ratings and Rigging

  • AFF
    Instructor
  • Rigging Back
    Rigger Examiner
  • Rigging Chest
    Rigger Examiner
  • Rigging Seat
    Rigger Examiner

Recent Profile Visitors

The recent visitors block is disabled and is not being shown to other users.

  1. No. The first 10-20 pound stretch is for marking. I didn't mention: cutting must be done with a hot knife, not shears or scissors, so sheath and core are both tensioned the same to share the load.
  2. Poynter's procedure comes in two parts. First is tension for marking -- see Vol 1 para 7.25.H.4, on page 399: 10 pounds for Type-2, 20 pounds for Type-3, and mark within 30 seconds of applying tension. Then there is pre-stretching, in 7.25.H.5: "Pre-stretch the line by applying tension to the full line equal to 10% of its rated strength (55 lbs for Type-3 line and 40 lbs for Type -2 line) for 15 minutes. Relax tension and remove the line from the [tension device]." I have no idea why additional pre-stretching/tensioning would be required after marking the line.
  3. You can always find someone to agree with you if you are persistent enough. All we ask is that you get video of your jump. At least the landing. National, Para-Phernalia, and Precision all choose not to service equipment more than 20 years old. Sunpath and RI have made similar statements. In these cases, the manufacturers acknowledge that these life limits are not legally binding, so riggers will not be in trouble with the FAA if they pack them. They are still exposed to civil liability, but if they are not concerned about liability, they can be blase about finding themselves in court after an accident, being asked, "What exactly do you know that the manufacturers do not?" Ask your "Rigger in the US" if he is okay with packing a RI Aviator pilot rig that is more than 15 years old, or if he is okay with packing a PD reserve with more than 40 packs (one that has not been reinspected and recertified by PD), or if he is okay with packing a Security 950 more than 10 years old.
  4. You can email me directly: [email protected] --Mark
  5. I think you are asking if you need to ask permission to do make the change. That depends on how you interpret "parachute" in Part 65.125(c): If you think "main parachute" means all the stuff that goes with it, including main container, bag, pilot chute, etc., then you don't need permission (my preferred take on the meaning of the regulation). If you think "main parachute" means just the canopy, then you're stuck with asking the manufacturer or your local FSDO and you might as well abandon your project. BTW, Strong Enterprises made a drogue-equipped student rig several years ago, but it never caught on.
  6. Why do some tandems open hard, and why wouldn't that happen with your notional design?
  7. "Workable" implies that it actually works, not that it might possibly work. How far have you gotten in development?
  8. If the pilot has only one altimeter, he can set it to MSL and do the mental calculation to get AGL for skydivers, or he can set it to AGL and do the mental calculation to talk to ATC or other airplanes. ATC and collision avoidance are generally more urgent and the consequences of miscalculation more immediate, so setting to MSL is more common. What I don't get is why anyone is arguing with the pilot at all. If you need more altitude, just decline to jump and ask for a higher pass.
  9. The TSO'd free bag and reserve pilot are required to be marked with the manufacturer's address. With the factory closed, what address is he using?
  10. Airborne Systems Flip
  11. I can confirm that the Trap releases under circumstances similar to all the other non-Infinity MARDs, especially folding-bridle MARDS like Boost and Ace.
  12. The Trap can release under circumstances similar to all the other non-Infinity MARDs.