AnonEMouse 0 #1 April 30, 2009 The manufacturers full trim specs are in hand. As a master rigger, is it necessary to know the name/manu of the parachute to make a lineset? or is it possible with just the trim specs and the # of attachment points? BS AnonA round is formation, not something to jump. Quote Share this post Link to post Share on other sites
PeteS 0 #2 April 30, 2009 Anything is possible. Show your work off here when you are done, hotshot! Quote Share this post Link to post Share on other sites
AnonEMouse 0 #3 April 30, 2009 I think you misunderstand, Pete. I'm not bragging, I'm asking. With the trim specs, can a lineset be made without knowing the specific parachute?A round is formation, not something to jump. Quote Share this post Link to post Share on other sites
mark 107 #4 April 30, 2009 QuoteWith the trim specs, can a lineset be made without knowing the specific parachute? Most of the time, the trim specs say the measurement from a B-line attachment to the link should be some amount longer than the measurement from its A-line to the link. However, the length of the B-cascade depends on where it joins the A-line, and that information is not usually included with the specs. Mark Quote Share this post Link to post Share on other sites
AnonEMouse 0 #5 April 30, 2009 Thanks for the info/input, Mark. These are the trim specs. With the attachment points numbered, do you think this info is enough? Inches/Centimeters A TO B : 2.375 / 6 A TO C : 7.5 / 19 A TO D : 14.625 / 37 A TO TAIL : 5.5 / 14 A LINE LENGTH 108.625 / 276 Brake set is 4" below the upper end of the rear riserA round is formation, not something to jump. Quote Share this post Link to post Share on other sites
GLIDEANGLE 1 #6 April 30, 2009 These specs describe how the line lengths vary across the chord.... don't the lines vary by location on the span as well? In other words, are all A lines (or all B lines, or C lines) the same length on a given canopy? I just checked for a Spectre and it appears that they vary accross BOTH the chord and the span.The choices we make have consequences, for us & for others! Quote Share this post Link to post Share on other sites
councilman24 37 #7 April 30, 2009 Depends on the parachute. Some are the same side to side, some aren't.I'm old for my age. Terry Urban D-8631 FAA DPRE Quote Share this post Link to post Share on other sites
indyz 1 #8 April 30, 2009 Depends on the canopy. Older, rectangular canopies tended to have the same length lines across the span. Quote Share this post Link to post Share on other sites
councilman24 37 #9 April 30, 2009 Nope. No cascade data, not even if there are cascades. And no brake line length data.I'm old for my age. Terry Urban D-8631 FAA DPRE Quote Share this post Link to post Share on other sites
mark 107 #10 April 30, 2009 QuoteBrake set is 4" below the upper end of the rear riser This is the industry standard position for the control line guide ring. Mark Quote Share this post Link to post Share on other sites
mark 107 #11 April 30, 2009 QuoteThanks for the info/input, Mark. These are the trim specs. With the attachment points numbered, do you think this info is enough? Inches/Centimeters A TO B : 2.375 / 6 A TO C : 7.5 / 19 A TO D : 14.625 / 37 A TO TAIL : 5.5 / 14 A LINE LENGTH 108.625 / 276 Brake set is 4" below the upper end of the rear riser Well, those _are_ trim specs. But they're not _full_ trim specs, just enough to check trim on a line set manufactured to full specs. The only way these specs work is on continuous-line (no cascade) canopies, like Xaos. Mark Quote Share this post Link to post Share on other sites
johnny1488 1 #12 April 30, 2009 No stabilizer slack info either Johnny --"This ain't no book club, we're all gonna die!" Mike Rome Quote Share this post Link to post Share on other sites
AnonEMouse 0 #13 April 30, 2009 OK - good. This is useful information and I appreciate it. I can measure some of the cascades from the connection to the cascade point. That will give us that information. What about stabilizer slack? Could you talk about this, Johnny? Mark - if I can get the full specs, do you construct linesets? BS AnonA round is formation, not something to jump. Quote Share this post Link to post Share on other sites
AnonEMouse 0 #14 April 30, 2009 Good point, Terry. It's because I don't know if there is more information in the data than is apparent that I'm asking. Maybe you can PM me, if you're interested in learning more, and I can explain more fully about this project. Thanks. Anon Edited to add: Mark, Johnny, whomever: feel free to PM if you're interested and I'll explain more about this project and the possibility of seeing it through. Thanks.A round is formation, not something to jump. Quote Share this post Link to post Share on other sites
mark 107 #15 April 30, 2009 QuoteOK - good. This is useful information and I appreciate it. I can measure some of the cascades from the connection to the cascade point. That will give us that information. What about stabilizer slack? Could you talk about this, Johnny? Mark - if I can get the full specs, do you construct linesets? BS Anon I have constructed line sets. If you want a standard line set, PeteS is your best non-factory source. I might be interested if there was some experimenting going on. Mark Quote Share this post Link to post Share on other sites
johnny1488 1 #16 April 30, 2009 it's the slack in the stabilizer so it loads the line, not the fabric. Most pd's are .5,1,1.5 inches b-d Icarus mostly are 1,2,3 cm b-d It's the only measuresble part of putting on a pre-made lineset, aside from setting the toggles. Johnny --"This ain't no book club, we're all gonna die!" Mike Rome Quote Share this post Link to post Share on other sites
diablopilot 2 #17 April 30, 2009 Not all canopies have stabilizers and not all stabilizers are slack. ---------------------------------------------- You're not as good as you think you are. Seriously. Quote Share this post Link to post Share on other sites
AnonEMouse 0 #18 April 30, 2009 Quoteit's the slack in the stabilizer so it loads the line, not the fabric. It's the only measuresble part of putting on a pre-made lineset, aside from setting the toggles. Well, there is something interesting about the stabiizers which I'd be happy to discuss in PM. And yes, there is experimentation going on so this project should be filled with thrills, chills and larfs. AnonA round is formation, not something to jump. Quote Share this post Link to post Share on other sites
