Re: bridles
Posted: 2014/06/09 01:06:53 UTC
http://www.ushawks.org/forum/viewtopic.php?f=2&t=1563
Platform Launching (PL) Draft suggestions needed
Compare/Contrast with off the scale moronic crap like:
http://www.hanggliding.org/viewtopic.php?t=27393
Pro towing: 1 barrel release + weak link or 2 barrel release
- Where the hell ARE you...
http://www.hanggliding.org/viewtopic.php?t=16265
weaklinks
http://www.ushawks.org/forum/viewtopic.php?f=15&t=1186
D. Straub's Politics=Gun Grabbing, Constitution/Baby Killing
And speaking of quotes...
Thanks zillions. The crap in that thread will be able to keep me fueled for YEARS.
Platform Launching (PL) Draft suggestions needed
Fuck that. There wasn't a goddam thing Mike said that was less of "his position" than two plus two equals four.Bill Cummings - 2014/06/08 18:00:01 UTC
Thanks Mike for stating your position regarding weak-links and tow force.
Compare/Contrast with off the scale moronic crap like:
Bill Cummings - 2014/06/05 19:44:19 UTC
The strongest weak-link that we ever used was 350 lbs (1.6 times our all up weight.) for payout winch/reel.
For static we use 220 lbs for a weak-link. Neither of these two breaking limits would cause any control problems when they broke. (Of course you have to pull the bar in when the weak-link broke or the hang glider will climb, drop airspeed and stall.)
Nothing takes all the fear out of a weak-link breaking than doing it on purpose during the many static tows that you do. You develop a feel for when they are about to break. It even helps when towing into a thermal low. You know when to get the nose down to save your weak-link so that you can continue to top out.
Bob Kuczewski - 2014/06/06 17:21:51 UTC
I also like that this discussion emphasizes that breaking a weak link is something that can be practiced - just like we practice stalls - so we understand how to handle them and to not be afraid of them. I had a terrifying stall experience with my instructor when I was learning to fly airplanes back in the 70s. For a long time I feared getting close to stall. As long as I feared stalls, I was not spending much time getting comfortable with them, and that didn't make me a better pilot. So there's a lot to be said for safely learning to handle the inevitable rather than trying to come up with some way to avoid the inevitable.
Nice job Bill !!!!
Something that could top THIS?:I hope that the take-away the readers get is from both of our positions on this subject is to bring to mind something about towing that they haven't thought of yet.
http://www.hanggliding.org/viewtopic.php?t=27393
Pro towing: 1 barrel release + weak link or 2 barrel release
Juan Saa - 2012/10/18 01:19:49 UTC
Boca Raton
The normal braking force in pounds for a weak link is around 180, at least that is the regular weak link line used at most aerotow operations. By adding a second weak link to your bridal you are cutting the load on each link by half, meaning that the weak link will not break at the intended 180 pounds but it will need about 360.
If that is what you use and is what your instructor approved then I have no business on interfering, i dont know if you are using the same weak link material but there shoul be only ONE weak link on a tow bridle for it to be effective in breaking before higher loads are put into you and the glider should the glider gets to an attitude or off track so much that the safety fuse of the link is needed to break you free from the tug.
I made the same mistake on putting two weak links thinking that I was adding protection to my setup and I was corrected by two instructors on separate occacions at Quest Air and at the Florida RIdge.
If this sport weren't the total heap of crap that it is nobody would be taking anything away from anything. None of this is rocket science and we've been doing it for 45 years.Hopefully the readers will find several ah-ha moments from each of our positions on weak-links and other thoughts.
- Fuck that.It looks to me that we are not that far apart in our towing procedures with regards to tow force and weak-link strength, etc.
- Where the hell ARE you...
...on weak link strength? And what the fuck are you trying to use it for? I haven't heard a goddam word about structural overload.Bill Cummings - 2014/06/05 19:44:19 UTC
The strongest weak-link that we ever used was 350 lbs (1.6 times our all up weight.) for payout winch/reel.
For static we use 220 lbs for a weak-link. Neither of these two breaking limits would cause any control problems when they broke.
Nah, your readers are gonna believe the other moronic crap they've already been told...Perhaps a reader might think that they could use the difference between our selected runway lengths and use the difference between our weak-link strengths and tow forces.
http://www.hanggliding.org/viewtopic.php?t=16265
weaklinks
...at Quest, Wallaby, Lookout, Currituck, Morningside, Ridgely, Cloud 9, Cowboy Up, Foothills... These assholes have worked this out, been doing it for decades, have a proven system that works, *might* have an idea of how this stuff works...Kinsley Sykes - 2010/03/18 19:42:19 UTC
In the old threads there was a lot of info from a guy named Tad. Tad had a very strong opinion on weak link strength and it was a lot higher than most folks care for. I'd focus carefully on what folks who tow a lot have to say. Or Jim Rooney who is an excellent tug pilot. I tow with the "park provided" weak links. I think they are 130 pound Greenspot.
Oh yes. DO compromise. Bob just loves it when people compromise.This compromise...
Asshole....rather than jumping with both feet into one position or the other could ease them into making decisions that best fits their skill set.
HERE's the reason you "THINK" the way you do:Thanks Bob for putting into words what most accurately describes why I think the way I do on this subject.Bob Kuczewski - 2014/06/08 04:14:46 UTC
One of my thoughts while mulling this all over is that the severity of the glider's response to a line break must be related to the amount of tension in the line when it broke. In other words, if the tension is very close to zero before the break, then the glider's response will be very close to zero after the break. Is that generally true?
http://www.ushawks.org/forum/viewtopic.php?f=15&t=1186
D. Straub's Politics=Gun Grabbing, Constitution/Baby Killing
Bill Cummings - 2013/02/19 02:43:00 UTC
No one should confuse me with someone that has been exposed to higher education. I avoided that style of incarceration like the plague.
Oh good. Let's all trust our lives to what an effective high school dropout with no fear of stalls BELIEVES is true.I believe that is true.
Un fucking believable.I believe that is true also and the two quotes are the basis for my way of thinking.So the greater the line tension at the time of the break, the greater that thrust change and subsequent deceleration will be. Is that generally true as well?
And speaking of quotes...
Thanks zillions. The crap in that thread will be able to keep me fueled for YEARS.