Zach Marzec
s Did anybody ever stop YOU from entering the conversation? The way Davis, Jack, Bob, Cragin, Peter, all the other cowardly internet shits have stopped me from participating in conversations?Kinsley Sykes - 2013/02/17 16:04:16 UTC
Deltaman and Zach seem to be jumping on Jim for not using facts.. while not using RELEVANT facts to make their case.. When these guys agree with themselves on a forum where they all talk to each other, (http://www.kitestrings.org/forum2.html) no big deal, but I worry that folks will read the lack of response as some sort of endorsement of these positions. Actually, if you are on the fence, but think maybe these "strong weaklink" guys have a point, please go to that forum and read through it. Then see if you want to trust your life to their theories..
- What's the theory to which you're trusting your life now? The one that's proffered by sleazebags too paranoid to allow people with critical positions into the conversations?
-- Jim Keen-Intellect Rooney...
http://ozreport.com/forum/viewtopic.php?t=24846
Is this a joke ?
...*might* have an idea of how this stuff works even though...Jim Rooney - 2011/08/25 04:55:25 UTC
It always amazes to hear know it all pilots arguing with the professional pilots.
I mean seriously, this is our job.
We do more tows in a day than they do in a month (year for most).
We *might* have an idea of how this stuff works.
...it was already worked out by the time he arrived and things stick because of quite literally hundreds of thousands of tows worth of trail and error using the same fishing line.Jim Rooney - 2013/02/13 19:09:33 UTC
It was already worked out by the time I arrived.
The reason it sticks?
Trail and error.
-- HOW it was worked out before Jim Keen-Intellect Rooney arrived...
http://www.questairforce.com/aero.html
Aerotow FAQ
...using only 130 pound Greenspot which:Weak Link
The strength of the weak link is crucial to a safe tow. It should be weak enough so that it will break before the pressure of the towline reaches a level that compromises the handling of the glider but strong enough so that it doesn't break every time you fly into a bit of rough air. A good rule of thumb for the optimum strength is one G, or in other words, equal to the total wing load of the glider. Most flight parks use 130 lb. braided Dacron line, so that one loop (which is the equivalent to two strands) is about 260 lb. strong - about the average wing load of a single pilot on a typical glider. For tandems, either two loops (four strands) of the same line or one loop of a stronger line is usually used to compensate for nearly twice the wing loading. When attaching the weak link to the bridle, position the knot so that it's hidden from the main tension in the link and excluded altogether from the equation.
IMPORTANT - It should never be assumed that the weak link will break in a lockout.
ALWAYS RELEASE THE TOWLINE before there is a problem.
--- SHOULD break before the pressure of the towline reaches a level that compromises the handling of the glider but fucking obviously...
http://www.youtube.com/watch?v=27yFcEMpfMk
...DOESN'T - so you're dead anyway if you're locking out low and can't blow your release in time
--- SHOULDN'T break every time you fly into a bit of rough...
0:50
http://www.youtube.com/watch?v=JR_4jKLqrus
...or perfectly smooth air but fucking obviously DOES...
http://www.youtube.com/watch?v=eTKIAvqd7GI
http://www.youtube.com/watch?v=VYe3YmdIQTM
...and frequently inconveniences people, often seriously, sometimes fatally
If you go to The Flight Park Tad Runs, weak link theory is:
- The weak link protects your aircraft against overloading.Tost Flugzeuggerätebau
Weak links protect your aircraft against overloading.
- Gliders:
http://vimeo.com/26210217
-- are very strong so don't need much protection against overloading
http://www.youtube.com/watch?v=r1LbRj-NN9U
-- stall when weak links break
http://4.bp.blogspot.com/-bRrpHNa68iY/UQ6Pv9gRZyI/AAAAAAAAjTg/Hc22bx5122Q/s2048/20943781_BG1.jpg
- Stalls are dangerous - so don't use weak links that break when the glider's not being stressed.
24-41612
http://farm4.staticflickr.com/3851/14797218536_45f1a8c681_o.png
http://farm4.staticflickr.com/3842/14633550919_57af1df255_o.png
32-42004
- Gliders can get very dangerously locked out on very dangerously understrength weak links - so it's a monumentally stupid idea to try to make lockouts less dangerous by making weak links more dangerous.
http://www.youtube.com/watch?v=F_n5B3-MIC4
http://www.youtube.com/watch?v=k9fQuDzFuCE
http://2.bp.blogspot.com/-9Ek9_lFeSII/UZ4KuB0MUSI/AAAAAAAAGyU/eWfhGo4QeqY/s1024/GOPR5278.JPG
http://farm4.staticflickr.com/3725/9665623251_612b921d70_o.png
http://2.bp.blogspot.com/-Xh_NfnOcUns/UZ4Lm0HvXnI/AAAAAAAAGyk/0PlgrHfc__M/s1024/GOPR5279.JPG
- Glider's typically drop like bricks for long distances after lockouts - regardless of whether they're released by a pilot or popped off by a Rooney Link - so don't expect to be able to get into a low level lockout and come out alive regardless of what equipment you're using or whether or not you've been at an around all this plenty long enough to understand what's what and who's who.
- If you're really good at flying locked out gliders with one hand...
01-001
04-200
05-215
07-300
10-307
11-311
15-413
...it's acceptable to fly with a release actuator within easy reach. Otherwise...
http://www.youtube.com/watch?v=rh3-uZptNw0
...use a release that ISN'T totally useless in an emergency.
- Whenever somebody boasts of the long track record of a piece of equipment ask him how many people have been killed in the course of establishing it.
The theory from The Flight Park Tad Runs tells you that you need:
- two hands on the basetube at all times - especially when your life is dependent upon you aborting the tow
- very good release equipment with very good bench test results and very short track records
- to:
-- fully comply with:
--- FAA aerotowing regulations
--- the laws of physics
-- watch enough lockout videos to get a grip on reality
-- function as Pilot In Command
-- be able to function as Pilot In Command
-- use a:
--- weak link:
---- two to three times as heavy as what everybody else is using
---- proportional to the load capacity of your glider
--- two point bridle rather than a loop of 130 pound fishing line to keep the glider from attaining dangerously high pitch attitudes
--- tug pilot who:
---- can't fix whatever's going on back there by giving you the rope
---- won't ever make a good decision in the interest of your safety
-- accept the facts that:
--- if you lock out low you'll be just as dead as you would if you locked out coming off a mountain launch ramp
--- the greatest dangers are a rope break or a premature release
-- abandon your concept of a loop of fishing line as a benevolent supernatural entity:
--- concerned solely with your personal safety
--- qualified to always instantly execute the best decision in the interest of your safety
--- that won't fatally inconvenience you in a New York minute if the towline tension exceeds the breaking point at the wrong time
-- discount as the sleazebags they are assholes who tell you that fatal tow crashes:
--- are the consequences of muppets thinking that they can fix bad things and not wanting to start over
--- will never be understood when the guy who's just died doing what he loved was one of their hotshot buddies
So c'mon, OP... You've obviously got a pretty strong interest in the weak link issue...
http://ozreport.com/forum/viewtopic.php?t=31432
Free* weak link tensile testing.
...along with a deep passion for advancing safer free flight. Kinsley here is a bit confused on the issue but in danger of falling prey to the forces of...
http://ozreport.com/forum/viewtopic.php?t=30971
Zach Marzec
...Tad's Hole In The Ground. Give him some guidance. Help get him back on track before he starts using one of these Tad-O-Links:Kinsley Sykes - 2013/02/18 14:32:01 UTC
Overall this actually makes some sense...
like the one that didn't break when Paul Tjaden wanted it to and allowed him to lock out while he was flying his topless with one hand in violent thermal conditions.