JerryBaumchen

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Everything posted by JerryBaumchen

  1. JerryBaumchen

    rodriguez parachute systems container

    Hi Spot, I'm thinking it should be a conventional rig, i.e., back pack w/gut pack. I don't think he ever built a piggyback rig. Do NOT count on this but I seem to remember that it was called Rod's Rebel. Jerry Baumchen PS) According to what an FAA Aircraft Certification Office employee told me back in the 70's, he was the first person to be able to convince that FAA that he could build a rig without also having to build a canopy because he could buy canopies & install them. Up to that time, the FAA position was that a mfr had to build an entire rig; container, harness, canopy, pilot chute, etc.
  2. JerryBaumchen

    tandem instructor course

    Hi Josef, It looks like you are in Israel. If so, contact this guy: https://www.dropzone.com/profile/19706-rigger/ Jerry Baumchen
  3. JerryBaumchen

    Icarus 149 Reserve or Precision R-Max 148

    Hi tribe, The canopy in question is made by Icarus World, not NZ Aerosports. Just so someone does not mistake these two companies. The last that I knew, NZ Aerosports does not make a reserve canopy. http://icarusworld.net/ Jerry Baumchen
  4. JerryBaumchen

    Parachutes Australia Airforce reserve TSO or not

    Hi Peter, That is exactly it. For many, many years the FAA went all over the world inspecting mfg facilities. Now, to save money I would think, they 'sub' it out to the national aviation organization in whatever country the mfr is located. Jerry Baumchen
  5. JerryBaumchen

    Parachutes Australia Airforce reserve TSO or not

    Hi Peter, Al did not give up the formal TSO certification, he still holds it. What he does not have is the annual inspection approval of his facilities by Transport Canada. Jerry Baumchen PS) I 'think' that the FAA's position is that a TSO-authorization is valid until surrendered or revoked.
  6. JerryBaumchen

    Shipping skydive rig internationally

    Hi grigri, Over the last 10 yrs or so, I have shipped a number of rigs/gear to Europe using the US Postal Service. I have never had a real problem. One took about 6-8 weeks on the European end to get resolved. Yes, you can insure it; the limit is about $700 I think. On some gear, I had to break it down & ship separately. Yes, they do have tracking; it is much better now than a few years ago. Have your seller check with the USPS & get the details. Jerry Baumchen
  7. JerryBaumchen

    stunt manufacturer of eclipse container

    Hi tribe, Yes, last year PARACHUTIST ran a small notice that Shoobie had bought the business back. I have not heard anything since; well, other than some unfounded rumors. Jerry Baumchen
  8. Hi gb1, ^^^^^ This. As someone said to me a few years ago, 'If it weren't for people like XXX, we would all still be jumping gutter gear.' Jerry Baumchen
  9. Hi Sheeks, Unless I am wrong, your OP was to address a domed slider, for a main canopy only, that had fairly acceptable opening shocks when everything went right. You ( I think ) are concerned with that out-of-nowhere slammer opening that could result in permanent damage and/or death to the jumper. Given that, you have gotten my mind working, as all of my efforts in the past, and what I have read, are for the use of a domed slider where the 'normal opening' was too much for the jumper. You do present an interesting take on this idea of reducing the probability and reducing the possibility of a slammer opening. Especially, where you talk about using a slightly smaller domed slider, that would result in the same opening forces that a 'factory' flat slider would provide when everything went normally. As you mentioned, the domed slider might have the potential to reduce the occurrence of the slammer opening. It would be very interesting to take two exact canopies, have one with a standard flat slider & one with a slightly smaller, domed slider & get some input from the users. If I were running such a study, I would have the two jumpers exchange canopies after each jump to increase probability of the consistency of the jumps & the jumper's input/response. Given what I have written above, I ( right now, as I sit at my computer ) do not see any particular advantages to a flat slider vs a smaller, domed slider. However, until some side-by-side jumps could be made, I'll reserve making any statement that would be more definitive. It is a damned interesting concept. If only I were 20 yrs younger; hmmm. I won't speak for Sheeks, but what about you other folks on here; what say you? Jerry Baumchen
  10. Hi Bill, Hopefully, you or anyone else will never hear me say that I know it all about parachute equipment. I have built a fair number of flat sliders ( ~ 15 - 20 ) & a few domed sliders ( ~ 4 - 5 ). a. Depending upon the domed slider design ( they are not all the same design which means that the material costs & labor costs will vary ), I question whether they 'are harder to build.' As to 'wear out faster,' once I see some data supporting this, then I will believe it. At this time, I have doubts regarding this comment. b. As to 'there is a lot of force on those not-straight seams,' once there is some tension on those seams, they straighten out immediately. I think that any differentiation in forces would be neglible. And there is at least one domed slider design in which the seams are straight. c. As to 'Thus they'd be more expensive - and more likely to fail.' Having built both types, I doubt that they would be more expensive; again, it comes back to the design of the domed slider. The OP did say build it slightly smaller but domed. Smaller would be less fabric = less cost in materials which could offset any additional labor costs during mfr. As to 'more likely to fail,' I have never read or heard of anything that supports this comment. I am open to input from anyone on this. Just my $0.20 on these issues; others may disagree & that is OK with me. Jerry Baumchen
  11. JerryBaumchen

    Javelin models

    Hi Ken, Last year Derek Thomas ( formerly of Sunpath ) told me about the work that Kyle Collins did for them. He said it was a fair amount of very small changes to the rig; i.e., things like a change in the radius of a portion of the yoke pattern, etc, etc. It was about '03, at the Symposium, that I was talking with Derek ( he & his then wife Pat, bought Sunpath about '94 ) and he said that, from the original, it had over 135 changes to it. Now, some of those would be to the TSO'd portion of the H & C and some would be to the non-TSO'd portions. Just some trivia for those who like this stuff, Jerry Baumchen PS) The Javelin was originally TSO'd under C23c where you select what Category ( weight - speed, make a selection ) you want to certify it under. Later, they did the three Strength Tests per C23d, where you select what weight - speed you want to certify it under; then the FAA granted them certification under C23d, or so I was told. ETA: My error, I was talking with Derek at the '07 Symposium.
  12. JerryBaumchen

    733 sewing machine question

    Hi tekk, Try him: Mark Lancaster Skyworks Parachute Service 2222 Buffalo – West Springs HiWay Buffalo, SC 29321 864-429-8428 skyworksparasvc@aol.com Jerry Baumchen
  13. JerryBaumchen

    opinions for a cherry jumper

    Hi tribe, I think that it comes down to who is determining if it is 'acceptable' or not. IMO the FAA considers either one acceptable. Possibly you or the owner do not. I would think a discussion with the owner might make it worth his money to just buy the larger one & go on with his life; I would. It is rather like the old Vector 1 pilot chutes with the very small cap. I have never heard RWS/UPT issue anything that they must be replaced by the Vector II/III pilot chute with the larger cap. Not trying to argue, just trying to bring a different persective to the conversation. Jerry Baumchen
  14. JerryBaumchen

    Color the line attachment points on the canopy

    Hi 20kN, I think you mean 10 mm. 10 cm = ~ 4 inches. Jerry Baumchen
  15. JerryBaumchen

    USPA Board Meeting

    Hi Ken, It goes back probably 10 yrs ago but I was informed by an employee of USPA Hq that incidents are NOT req'd to be reported. Only fatalities. I do not know about today, Jerry Baumchen
  16. JerryBaumchen

    New RI mard? Riggers?

    Hi Robert, Anyone who was at the Symposium two yrs ago could have seen it. It was developed by Airborne Systems and was on one of their rigs at their booth. It was 'given' to RI as they & Airborne Systems have a close working relationships with each other. RI had a mockup at their booth two yrs ago. Jerry Baumchen
  17. JerryBaumchen

    Site Launch Gaffes

    Hi folks, I noticed that the blue dots/stars have disappeared. Also, now when I have read the last post in a thread, I can no long go to that thread. So, I decided to start this thread; since I can no longer comment on the Site Launch thread. Anyone want to play here? Jerry Baumchen
  18. JerryBaumchen

    Dropzone Site Launch & Bugs Megathread

    Hi folks, I have things set to not receive any Notifications. Yet, I still get them. I have about a 1/2 dozen there; anyone know how to clear them? Thanks in advance, Jerry Baumchen
  19. JerryBaumchen

    SWS Fire container - need your opinion

    Hi LL, Just wondering; what authority do those standards have since they are by the APF & not CASA? Jerry Baumchen
  20. JerryBaumchen

    Dropzone Site Launch & Bugs Megathread

    Hi Bryn, Re: Here's an update on the bugs and the progress. If you see something not listed below, that is still an issue. Please do let me know, The line spacing IMO is still a problem. Thanks, Jerry Baumchen
  21. JerryBaumchen

    hard openings dome slider?

    Hi Rob, You are correct; my bad. Here is his contact info: Mark Lancaster Skyworks Parachute Service 2222 Buffalo – West Springs HiWay Buffalo, SC 29321 864-429-8428 skyworksparasvc@aol.com Jerry Baumchen
  22. JerryBaumchen

    hard openings dome slider?

    Hi Elpnor, The last that I knew, Mark Lancaster ( MEL on here ) still makes them. Give him a try, Jerry Baumchen
  23. Hi Bill, This reply is based upon my numerous discussions with numerous patent attorneys over numerous years. It is my understanding that you can make them & give them away for free without violating the patent. Should one want to do this. Jerry Baumchen
  24. JerryBaumchen

    BOD Meeting July 2018

    Hi Rich, I am completely convinced that it will never get built. I am not in the 'it may not' camp. Jerry Baumchen
  25. Hi yuri, I built my first jumpsuit by taking apart my old, worn out Pioneer jumpsuit & using it for a pattern. I then went on to make a handful or so of jumpsuits for other people. I even wrote an article for PARACHUTIST about it; 'Doing it Yourself.' I have also talked to numerous patent attorneys over the years. It is my understanding, for something that has had some protection associated with it ( patent/copyright/etc ), you can make the item for yourself; and many of them, but only for yourself and not for sale to others. I have no idea if your existing jumpsuit has any protection. I am an inveterate DIY'er; so, I say 'Go for it.' Even it it never works, costs too much, etc; you will learn a lot. Best of luck, Jerry Baumchen PS) Based upon a discussion that I had earlier this year with an employee of the US Patent Office, it seems as though the patent on the Collins Lanyard runs out next month. Just some trivia for those who might like to know.