mark
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Everything posted by mark
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When someone makes a jump with WoppyVacLLC, does he jump with the LLC's employee? If so, the employee can be sued. Mark
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I'm not Rob, but I'll give it a try. What would be the brake-set eye on any other canopy is assembled to the rear riser rapide link. The deployment setting is thus also the maximum flying speed setting. Each toggle line is fingertrapped to the control line, about 15" above the links. If the fingertrap is pulled more than 15" below the link to steer or flare, the jumper is pulling down on the link -- with the same resistance that you would get from doing a rear riser turn or flare. This abrupt change in required control force provides a natural, intuitive place for the jumper to quit pulling down on the toggles. Mark
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If they do this on an Aviator, the canopy returns to straight flight. -Mark
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1. What percentage of the PEP rigs that you repack/maintain have a square canopy in them? 5-10%. 3. Do you ever recommend a square canopy to your PEP owning customers? Always. It doesn't make sense to jump a 5mph canopy in winds more than 6-7mph, which is most of the time. Rigs with skydiving reserves (Ravens, PDRs) should be used by skydivers only, but the "slug" steering on the RI Aviator (disclosure: I have some association with RI) makes it a reasonable choice for someone with no experience or training. -Mark
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Can you show photos, sketches, or diagrams? Mark
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Thanks, Terry. Yes, I am interested in hearing from your contact. -Mark
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I'm looking for information about the training Army riggers get during the initial 92R training at Fort Lee. Mr. Google and other searches seem to be resistant. Specifically: -- What personnel main parachutes are packed? T-10/MC-1 and variants, MC4/5, RA-1? Others? -- What personnel reserve parachutes are packed? T-10R, MIRPS, MC4/5, RA-1? Others? -- What repairs are taught? Basic patch, patch involving radial seam, repairs to upper or lower lateral bands, line repair/replacement? -- After completion of the Ft Lee training, are graduates competent to work solo, or are they expected to get finish-up training at their duty assignments? (I know, there always needs to be a second person to do QC checks. I'm not asking are they allowed, just whether they're competent.) Are they competent to supervise or do QC checks? Thanks, Mark
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Does anybody know this manufacturer of rigs?
mark replied to skydiverwannabe's topic in Gear and Rigging
No. What their website says is "developed and tested in according to USA FAA TSO C23c." Those are weasel words intended to mislead. If it were approved under US TSO (or European or other international equivalent), they would use the word "approved." -Mark -
Where did you get that information? Poynter manual vol 2, pg 245. And yes, it's currently in the question bank for the written test. 3% is for round canopies. The original 1971 Poynter's has slight different numbers than the current 1991 edition. The 1971 numbers are: . . up to 200 knots 3% . . 200-300 knots 2% . . over 300 knots 1% -Mark
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Again, the definition or requirement to be a non-destructive test is that it should leave the test subject in the same state that it started with. By your first sentence, you just described and admitted it to be a destructive (material altering test). Not responsive. I'm going to try again. I agree that the that even when done correctly the 30- or 40-pound test changes the fabric. I agree that it meets a technical definition of a destructive test. However, it usually does not leave the fabric unserviceable the way that, say, tongue or trapezoid tear tests do. What is a better term for the sort of test that changes the test article but generally leaves it serviceable even if weakened? Mark
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The TS-108.1 flat rate (40-pound) tensile test is only for canopies suspected of having acid mesh. Otherwise, there is no amount specified. I agree that even when done correctly, the 40-pound (original acid-mesh test) or 30-pound (PD test) changes the fabric. It's not a destructive test, though, like tongue or trapezoid tear tests. What is a better term for this test than "non-destructive?" Mark
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This is exactly Precision's position. Their comfort level is 20 years. Your rigger's comfort level may be different, and they are okay with that. Mark
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Packing line equalization diaper with all lines in diaper?
mark replied to pchapman's topic in Gear and Rigging
He might have been confused by the diaper design. Some Strong diapers can be used as Type-2 deployment (half the lines used to lock the diaper, line stowage otherwise on the pack tray) _or_ as Type-4 (all the lines stowed on the diaper). We choose one or the other based on manufacturer instructions -- mostly for the bulk distribution that makes the pack look nice. Mark -
http://www.paragear.com/skydiving/10000049/W9115R/
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An RI magnetic bag's magnets do not open to let the lines out, just as the tuck tabs on other semi-stowless bags do not open to let the lines out. Mark
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Why wait? Line trim charts attached, from flyaerodyne.com. Also, you might try jumping the canopy with a different pilot chute. Also try in a different container. Also try with a different bag. Mark
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The harness length can be changed, and the lateral length can be changed. Easy if the harness has chest and hip rings, not quite as easy if just hip rings, and still po$$ible if no rings. Some manufacturers publish prices on their websites; expect other manufacturers and master riggers to charge about the same. What cannot be changed is the spread of the container yoke from around the back of your neck to the bottom of the pads under the 3-ring base ring, nor the position of the base ring (which is the suspension point under the main canopy = harness position after opening). The size of the harness from about the chest strap to over the shoulders is set by the cut of the container. In other words, your new harness may fit better but not better enough for the money you spend, and may still be uncomfortable. Call the manufacturer for advice about modifying the harness to fit you. -Mark
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Not Goliath, since Para-Flite used a sheet bend instead of larks head at both ends of the line, and cascades were just laid on top of continuous lines for the bartack. Might also be Strong, Pioneer, or Gargano canopy. Mark
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That's still true, but yes, dammit, I keep forgetting that C23b is the one based on NAS-804 of 1949. Yes everyone, your PD reserve is based on a 1949 standard. . . So that means. . . there is no upper certified weight or speed limit whatsoever for the classic PD reserves. No. The first PD reserves were certified to the standards of TSO-C23c Category B: 254# exit weight, 150kts. C23c/AS-8015A was adopted in 1984. I think you may be confusing C23c Category B with TSO-C23b. They are not the same thing. The only C23c Category A article I've seen is a Cricket reserve. To the best of my knowledge, nothing was ever certified to C23c Category C. Mark
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That's right. Manufacturer approval is not required for a rigger to change the length of the main bridle as long as the change does not interfere with normal function of the TSO'd parts of the parachute system. Mark
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"Parachute" is not the same as "canopy." The main parachute includes everything from the risers up -- no specific alteration approval from the manufacturer or FAA is required to alter the main risers or the main pilot chute, or anything in between. Mark
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According to AC105-2C, dtd 1/2/1991: - Para 9: "A certificated senior or master rigger may remove the pilot chute from an auxiliary/reserve parachute." Must be an assembly/disassembly thing, not an alteration, since a senior rigger may do it. - Para 10: "Attachment of an instrument panel, knife sheath, or other material to the exterior of the parachute assembly is not considered an alteration." Are there other references you might point me to? Mark
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Some gadgets can be attached to TSO'd equipment without it being considered an alteration. For example, an instrument panel (for altimeter and stop watch) can be added to a chest reserve. Also, nobody minds if you mount an altimeter on a chest strap, even though that might interfere with handle pulls. Mark
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My records show: Talon-2 #10562 DOM 2/1998, size T4 PISA Tempo 150 #189167 DOM 1/1998 Airtec Cypres-2 #46616 DOM 7/2008 Icarus Safire-149 #94612903 DOM 10/2006 Last packed by me 10 July 2013. You should let Airtec/SSK know since your Cypres is due for service this year. -Mark
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2 Federal Register page 2028 (Thursday, September 30, 1937) calls for a smooth tabletop at least 36" x 40'. No mention of height. I couldn't find any references earlier than that. Also, no mention of height in the later references I have. Mark