Releases

General discussion about the sport of hang gliding
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Tad Eareckson
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Re: Releases

Post by Tad Eareckson »

I'm not much into towing...
You're Norwegian. You don't have to be. Probably couldn't find a safe place to do it anywhere in the country with a gun to your head anyway.
What kind of release is this pilot using?
It's a knockoff of a Koch two stage:

http://www.drachenfliegenlernen.de/images/kochklinke.jpg
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Been around and pretty standard in Western European towing since the early Eighties. German origin. Rather beautifully engineered but rather overbuilt - stupidly so for one point aerotowing. Being used as a single stage here.

It's the ONLY "easily reachable" release that one has very high probability of easily reaching to be able to abort and survive a dangerous tow. That's one of the things I don't like about it. It's so effective that it prevents Kaluzhin and other...

http://www.youtube.com/watch?v=rh3-uZptNw0


...both-hands-on-the-control-bar-at-all-times releases from getting into circulation.

This is an AWESOME smoking gun video. Thomas aborts with such a blindingly fast interruption that the only way you can tell a hand has come off the bar is to notice that the towline has suddenly inexplicably disappeared.

Crap. Gonna hafta do another stills harvest from this one.
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TheFjordflier
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Re: Releases

Post by TheFjordflier »

Thanks.
So he should stick to this release, and don't swap it for the "standard US type" ? ;)
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Tad Eareckson
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Re: Releases

Post by Tad Eareckson »

No, he CAN stick to that release with maybe a one in a several million chance of ever being a situation of needing the one Antoine's demoing. But the one Antoine is demoing is way:
- safer
- cheaper
- lighter
- cleaner
- more:
-- efficiently engineered
-- beautiful

But yeah, definitely no mainstream US crap.

I pulled the Thomas video up into Final Cut so's I could look at it frame by frame. He goes from full grip through release and back to full grip in 0.48 seconds. Nobody would've ever heard of Bob Buxton if he'd been using one. Would've been a total nonevent. (Nice timing on posting this one.)
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Tad Eareckson
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Re: Releases

Post by Tad Eareckson »

http://www.youtube.com/watch?v=0SemB6QMR1c
Bob Buxton HG Launch

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Nice foot landing, Bob. Hard to go wrong putting as much time and effort as possible developing, polishing, maintaining your foot landing skills. Immeasurable value with respect to having a long, safe, injury free, rewarding flying career.

Also a tried and true release system...

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...with a long track record.

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Tad Eareckson
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Re: Releases

Post by Tad Eareckson »

http://azhpa.org/forums/topic/towing-in-rainbow-valley/
Towing in Rainbow Valley
Bob Buxton - 2012/05/07 05:32

This last Saturday (5/5/12) I went out to Sean Buckner's towing operation, my son Scott came along for moral support, to do a test flight/tow on his newly hang glider modified platform towing system. We waited until the late afternoon for the evening glass. I used my WW 225 Falcon for this test flight. It has been over ten years since I last towed up from the back of a pickup truck, so I was a tad bit nervous to say the least. Everyone involved did their best to help out with the setup, each checking the other to insure nothing was forgotten or left to chance. Once the glider was mounted to the platform, I hooked-in and did the normal hang check plus we went through a check list to be sure every thing was connected correctly. Sean commandeered a lady P.G. pilot to drive so he could sit in the truck bed and observe the launch while operating the winch controls. We agreed to a truck speed of 27 mph to release at, there was about a 5 mph evening breeze that we headed into. I told Sean to remove the release safety and off we go down the center of the road accelerating smoothly up to 27 mph. Scott was in the back with Sean, hook knife in hand, as a second set of eyes. The driver honked the horn twice, signalling we were at 27 mph. I moved my left hand toward the pneumatic release valve and opened it with very little effort. The nose release disengaged and I launched off the truck into the smooth evening glass. I climbed out to around 1500 to 1800 AGL and then released the tow line. There was little chance of any thermal activity at that time of day, so I just flew around at a minimum sink sled ride landing back where we started the tow. Wow, it worked just like we planned, big smiles on everyone's faces :) .

Sean's tow system works very well, the controls are very precise through a wide range of settings. His Sling Machine is very well engineered and constructed. The hang glider adaption can accommodate any size glider, large or small control bar. I like it a lot and can find no fault with it so far.

We took videos of the tow but, my wing tip mounted GoPro brushed a bush while running down the road and was knocked out of alignment. Sean has some editing software that can rotate it back to the correct attitude so, after he corrects it we will post it.

The Rainbow Valley site is just 13 miles from my house; I can be there in less than 20 minutes. I can see doing some step towing on a good day and soaring the Estrella Mountains, I've dreamed of this for over 30 years. Now it can happen. It would be so easy to fly back to my house. [-X
Greg Porter - 2012/05/07 06:42

Awesome Bob! =D> Thanks for the detail. Look forward to the video.

Congrats Sean! :ps15: Looks like this is going to be a great thing for the HG community. I am hoping to be out there this coming Saturday afternoon for a glass off launch if you have the time (and if I can get away early from an in-law's mid-day birthday party in Queen Creek! :-$ ).
Sean Buckner- 2012/05/07 19:01

Bob,

Thanks for the support... The launch was near perfect other than the brush with the scrub brush... Im sure the vid will show it... As for the mechanical part of the operation, I dont beleive there is anything that needs to be altered. I the pressures were right in line with where I expected them to be. The winch performed flawlessly as it always has. It takes about 5 minutes to convert the winch from PG to HG. As for the platform, It performed flawlessly too... I'm sure there will be some AMAZING flights from RBV, HG style.

I have tow roads In RBV, Oatman, Mingus, Apache Maide, Tucson, Tonopah, Harquahala, Casa Grande, and Yarnell.

Just say when...
Thank you, God.
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Tad Eareckson
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Re: Releases

Post by Tad Eareckson »

http://azhpa.org/forums/topic/towing-in-rainbow-valley/
Towing in Rainbow Valley
Bob Buxton - 2012/05/07 05:32

This last Saturday (5/5/12) I went out to Sean Buckner's towing operation, my son Scott came along for moral support, to do a test flight/tow on his newly hang glider modified platform towing system. We waited until the late afternoon for the evening glass. I used my WW 225 Falcon for this test flight. It has been over ten years since I last towed up from the back of a pickup truck, so I was a tad bit nervous to say the least.
Why? One quick easy reach to your Industry Standard release and you're headed back to terra firma in nice safe free flight mode.
Everyone involved did their best to help out with the setup, each checking the other to insure nothing was forgotten or left to chance.
And insured that you had the safest possible state-of-the-art release system - the best that the greatest country on the planet had to offer.
Once the glider was mounted to the platform, I hooked-in and did the normal hang check...
...main and backup, carabiner locked...
...plus we went through a check list to be sure every thing was connected correctly.
Bridle routed UNDER the basetube, release within easy reach.
Sean commandeered a lady P.G. pilot to drive so he could sit in the truck bed and observe the launch...
...since the lady P.G. pilot driver COULDN'T...
...while operating the winch controls.
Hydraulic pressure, dump lever...
We agreed to a truck speed of 27 mph to release at...
Ground or air speed? The glider doesn't give a rat's ass what the groundspeed is.
...there was about a 5 mph evening breeze that we headed into.
32 mph airspeed for launch. But foot launching in light switchy air on a shallow slope off the mountain is so much safer because of the fundamental simplicity.
I told Sean to remove the release safety and off we go down the center of the road accelerating smoothly up to 27 mph. Scott was in the back with Sean, hook knife in hand, as a second set of eyes.
And the hook knife in hand. Which is everyone involved saying they have shit confidence in the ability of the guy on the glider to abort the tow in any kind of emergency situation.
The driver honked the horn twice, signalling we were at 27 mph.
Instead of just having the pilot watch an airspeed indicator and popping off at the desired speed. I always hated that fucking horn. Totally unnecessary and really irritating.
I moved my left hand toward the pneumatic release valve...
...right there within easy reach...
...and opened it with very little effort.
And no compromise in control 'cause you can keep the glider planted on the platform until your hand's back on the control bar and you're ready to lift off safely.
The nose release disengaged and I launched off the truck into the smooth evening glass. I climbed out to around 1500 to 1800 AGL and then released the tow line.
What? We don't get a description of how safe, smooth, easy that operation was the way we just got for the nose release?
There was little chance of any thermal activity at that time of day, so I just flew around at a minimum sink sled ride landing back where we started the tow. Wow, it worked just like we planned, big smiles on everyone's faces :) .
Run any worst case scenario drills? Just kidding.
Sean's tow system works very well...
...when everything's going right...
...the controls are very precise through a wide range of settings.
Does the glider release count as a control? I notice you didn't say much about that phase of the operation. Didn't even tell us what it was. And not a single word about the focal point of your safe towing system - a weak link that breaks when it's supposed to.
His Sling Machine is very well engineered and constructed.
How 'bout your release system?
The hang glider adaption can accommodate any size glider, large or small control bar.
How 'bout the release system?
I like it a lot and can find no fault with it so far.
How 'bout...

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...now? Think hard. You still have 5.3 seconds before your brain gets mushed. If you could stop the clock for a week and use the time to improve the system what would you focus on? Better fishing line?
We took videos of the tow but, my wing tip mounted GoPro brushed a bush while running down the road and was knocked out of alignment.
Toldyaso.
Sean has some editing software that can rotate it back to the correct attitude so, after he corrects it we will post it.
Good ol' Sean. Constantly striving to get everything as right as human technological capabilities will allow.
The Rainbow Valley site is just 13 miles from my house; I can be there in less than 20 minutes.
And just about 28 miles to the helipads at Saint Joseph's in Phoenix - as the chopper flies.
I can see doing some step towing on a good day and soaring the Estrella Mountains, I've dreamed of this for over 30 years. Now it can happen.
- Now it can't - ever. Just 'cause none of you off the scale stupid Arizona motherfuckers could be bothered to look into platform launching like:

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- Fuck step towing. Do a normal tow on a good day and thermal back to the ridge.
It would be so easy to fly back to my house. [-X
Priorities. Do things right or don't. Goddam hundred dollar Kaluzhin release is all it would've taken. And STILL none of you off the scale stupid Arizona motherfuckers have ever expressed the slightest interest.
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Tad Eareckson
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Re: Releases

Post by Tad Eareckson »

http://azhpa.org/forums/topic/towing-in-rainbow-valley/
Towing in Rainbow Valley
Greg Porter - 2012/05/07 06:42

Awesome Bob! =D> Thanks for the detail. Look forward to the video.
And many more to come! (Like my stills collections?)
Congrats Sean! :ps15: Looks like this is going to be a great thing for the HG community.
Like the standard aerotow weak link, Jim Keen-Intellect Rooney, Kelly Harrison's tandem thrill ride operation, Mission Soaring Center's state-of-the-art equipment.
I am hoping to be out there this coming Saturday afternoon for a glass off launch if you have the time (and if I can get away early from an in-law's mid-day birthday party in Queen Creek! :-$ ).
Yeah. Probably best to stick to sled conditions for a while - until they've eliminated any hitherto unknown bugs.
Sean Buckner - 2012/05/07 19:01

Bob,

Thanks for the support... The launch was near perfect other than the brush with the scrub brush...
And here I was thinking that a scrub brush was something one used for cleaning floors and toilets.
Im sure the vid will show it... As for the mechanical part of the operation, I dont beleive there is anything that needs to be altered.
Perfection. Just like your writing.
I the pressures were right in line with where I expected them to be.
Please keep up the great work.
The winch performed flawlessly as it always has.
Nice steady tow pressure from launch...

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...through...

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...until impact.

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What more could one possibly ask for?

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It takes about 5 minutes to convert the winch from PG to HG.
How long does it take the hang glider "pilot" to release and regain control of his aircraft in a best case scenario? I'm seeing well over six times what it took Thomas to blow his Atos off using a Koch.
As for the platform, It performed flawlessly too... I'm sure there will be some AMAZING flights from RBV, HG style.
You can sure count on one AMAZING flight from RBV, HG style, from your HG test pilot. One of the most spectacular hang glider tow crash videos ever produced.
I have tow roads In RBV, Oatman, Mingus, Apache Maide, Tucson, Tonopah, Harquahala, Casa Grande, and Yarnell.
Knock 'em dead, Sean.
Just say when...
Got an opening for the early afternoon of 2012/10/03 at RBV?

And thanks bigtime for all your participation in and contributions to all the postmortem discussions.
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Tad Eareckson
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Re: Releases

Post by Tad Eareckson »

http://azhpa.org/forums/topic/bob-buxton-updated-1-28-13/
Bob Buxton (Updated 1-28-13)
Scott Buxton - 2012/10/04 01:49

My dad Bob Buxton was involved in a hang gliding accident towing in Rainbow Valley today. I don't know much details about the accident, so I can't really give details on what happened.
Tom Tillman - 2012/10/04 19:40
480-334-8989

I have written a report on this accident. I was there and saw it. I am waiting for Allen to get back to me and tell me who I am supposed to send it to.
http://recreationrrg.com/rrrg-governance
Board and Governance | Recreation Risk Retention Group
Timothy Herr
Secretary and Risk Management Officer
If any other club officers have this information, I would appreciate it.
Hang in there Bob, we are hoping for your full recovery soon.
Don't hold your breath.
Update- I have sent this report to USHPA per standard protocols for accident reporting.
Oh good. Now all we need to do is wait until u$hPa's chief safety officer finishes redacting all the bits which may pose liability issues for The Association.
Scott Buxton - 2013/01/29 00:59

Update mom wrote
I have been praying that the Drs at HealthSouth would have the wisdom to have Bob sent back to St Josephs due to his significant decline in function and was on my way over there to discuss this with his Dr. And got a call from HealthSouth that they were sending Bob to St Josephs ER just as I prayed for that as I entered the freeway which is the way I would go to st Josephs. We have an awsome God who answers prayers. Will keep you posted on status.

Bob's cerebral hematoma showed larger on CT. They decided to intubate him in ER. They are working on him now. Please pray.

Bob is still in ER, they are drilling a hole in his skull to drain off the blood right here. I just prayed with the protestant chaplain and feel peace that he will be OK.
And I guess the reason there are no more posts in this thread is because the awesome God who allowed Bob to go up with the bridle routed over the control bar, a placebo release, and a spotter watching the pressure gauge to verify that whatever was going on back there was fine responded to all that praying and facilitated Bob's full and speedy recovery and return to this wonderful sport we all love so much.

And note that that post date is four days before Zack Marzec's Rooney Link increased the safety of the Quest towing operation - PERIOD - and dumped him into his fatal inconvenience whipstall and tumble.
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Tad Eareckson
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Re: Releases

Post by Tad Eareckson »

http://www.hanggliding.org/viewtopic.php?t=28305
Bob Buxton Truck Tow Accident Video
Scott Buxton (I Soar AZ) - 2013/02/10 10:17:16 UTC
Phoenix - K9BUX

Hello,
I am posting this for my Dad, Bob Buxton. My Dad wants to make the video of his truck towing accident on (10-3-12)...
Crap. I've had the date 2012/10/04 based on:

http://www.ushawks.org/forum/viewtopic.php?f=2&t=1157
Accident information please.
Bill Cummings - 2012/10/04 22:21:40 UTC

I got a call a few minutes ago and was told a pilot by the name of Bob Buxton had an accident while PL towing near Phoenix AZ .
Guess the news wasn't quite as fresh as I was assuming. Now the time stamps from the AZHPA forum posts are making a lot more sense. Had to go back and do a few zillion edits.
...public so that others may learn from his mistake.
- OK, people of varying ages... When you're doing a platform tow launch you want the bridle OVER the basetube. Everybody clear on that?
- Mistake? Singular? He's airborne for ten seconds, slams in and mushes is brain still on tow, and he only made ONE mistake?
The cause of the accident...
The cause of the what?
...was tow line was hook up over the control bar. Pilot error.
Certainly nothing to do with the rig owner, driver, spotter. Nobody else involved in that operation had ANY responsibility whatsoever to check that the glider was in reasonably good shape before the gas was hit?

http://www.youtube.com/watch?v=_2oeb0nNIKs
Bob Buxton accident
Spotter - 0:27

He said he's ready. Let's go. Thirty-five.
Just "Pilot error." Doesn't that tend to limit the educational value of this video just a bit? No wait...
Glenn Zapien

Always a student.
I forgot. In hang gliding we're all always students. None of us are ever INSTRUCTORS - 'cept, of course, for Jim Keen-Intellect Rooney and Ryan Instant-Hands-Free-Release Voight.
Bob has been Hang gliding 38 years incident free.
Oh. So in 38 years he's never skipped a hook-in check before running off a ramp or blown a stunt landing and bowed a downtube? Really remarkable record.
Mostly mountain flying. He has truck towed a handful of times. He knew the tow line was post to go under the base bar.
And I see that he taught you the value of making sure to always get everything right.
Just made a mistake hooking it up.
No mistake whatsoever regarding what he was hooking it up to - a typical truck tow release.
Bob wants everyone to know he takes full responsibility for the incident and there is no one to blame but himself.
- Fuck that. The entire culture is to blame for bullshit like this.

- So twelve days ago we had:

http://azhpa.org/forums/topic/bob-buxton-updated-1-28-13/
Bob Buxton (Updated 1-28-13)
Scott Buxton - 2013/01/29 00:59

Update mom wrote
I have been praying that the Drs at HealthSouth would have the wisdom to have Bob sent back to St Josephs due to his significant decline in function and was on my way over there to discuss this with his Dr. And got a call from HealthSouth that they were sending Bob to St Josephs ER just as I prayed for that as I entered the freeway which is the way I would go to st Josephs. We have an awsome God who answers prayers. Will keep you posted on status.

Bob's cerebral hematoma showed larger on CT. They decided to intubate him in ER. They are working on him now. Please pray.

Bob is still in ER, they are drilling a hole in his skull to drain off the blood right here. I just prayed with the protestant chaplain and feel peace that he will be OK.
But now we know that Bob wants everyone to know he takes full responsibility for the incident and there is no one to blame but himself. I gotta start trying some of these prayers. (A bit odd that we still haven't heard anything about his miraculous full recovery and return to the sport.)
What we can learn from this accident is have a checklist, go through the checklist and make sure everything is good to go before take off and flying.
Yeah? Took him three seconds to blow his Industry Standard release at max altitude on the evening of 2012/05/08. And we all know that we can use our razor-sharp cutting tool to slash through our lines in an instant. So isn't that something we should all learn? In a critical situation like that don't worry about having to replace all your lines. Just go for the fastest and most effective way possible to abort the tow.
Not just truck towing. Have a checklist and go through it every time you fly.
- Ya hear that, Greg? Clip your nine page checklist to your nose and then you can safely skip the hook-in check every time.

- Bullshit:
-- Checklists aren't:
--- being used any more - or less - now than they were on and before 2012/10/03
--- really great solutions to the actual problems we have in hang gliding - like the ones we had in this one

- The better solution is to know what the fuck you're doing and what serious threats need looking for above chickenshit issues / distractions like buckled helmets and locked carabiners.
Bob is still recovering at health south Rehab Facility in Glendale, AZ.
I doubt it. I think he was recovering until:
Scott Buxton - 2013/01/16 22:35

Dad, had a fall out of bed at 4 am, Hitting head on floor. Had severe headache. He has been transferred by ambulance from West valley hospital to St josephs hospital. CT scan show bleeding in brain, they increased the shunt pressure and hope that takes care of it. They will do a repeat CT scan at 4 pm. If all goes well should be here a couple days. Please keep praying for him.
After that no more positive or even really hopeful posts. No more posts period. Scott appears one more time on The Jack Show outside of this thread - 2013/04/19 14:22:51 UTC. God pretty obviously stopped coming through for this family and the hang gliding community. Must've been otherwise operating in mysterious ways.
Bob suffered a severe head injury (bleeding on the brain) He still has a long road ahead of him in recovering. Bob wants to say thank you for all the thoughts and prayers.
Fuck the prayers and we needed the thoughts DECADES BEFORE the incident. And after a handful of subsequent idiot towing fatalities we're still not getting much.
So now that he's all better and flying again he's decided for some unannounced reason that he DOESN'T want to make the video of his truck towing accident on (10-3-12) public so that others may learn from his mistake? Tell me how this lockdown isn't pretty definitive proof that there ARE people to blame other than himself. Give me some other explanation that makes any sense.
2013/02/10 21:18:35 UTC - 3 thumbs up - FMAN
2013/02/11 03:06:01 UTC - 3 thumbs up - Sam Kellner
http://www.ushawks.org/forum/viewtopic.php?f=17&t=1081
Platform towing /risk mitigation / accident
Sam Kellner - 2012/07/03 02:25:58 UTC

No...
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...you don't get an accident report.
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Tad Eareckson
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Re: Releases

Post by Tad Eareckson »

http://azhpa.org/forums/topic/bob-buxton-updated-1-28-13/
Bob Buxton (Updated 1-28-13)
Tom Tillman - 2016/10/04 19:40

I was there and saw it.
Sean Buckner conspicuously totally absent from this thread. It's only important for him to post about his rig when everything goes great 'cept for a wingtip camera getting turned out of alignment by the scrub brush.
Tad Eareckson - 2016/10/21 00:02:46 UTC

...two days shy of five months later; same payout rig, spotter...
Wrong.
Scott Buxton - 2012/10/04 01:49

My dad Bob Buxton was involved in a hang gliding accident towing in Rainbow Valley today. I don't know much details about the accident, so I can't really give details on what happened.
http://www.hanggliding.org/viewtopic.php?t=28305
Bob Buxton Truck Tow Accident Video
Scott Buxton - 2013/02/10 12:41:40 UTC

The guy in the back is operating the tow rig.They should of had a guy in the back of truck with a hook knife and his only job would of been cut the line if things go bad. I wasn't there or I would of been that guy. Not sure why they didn't have a guy in the back with hook knife.
Also - along with the driver - conspicuously absent from any discussion.

Scott Buxton (and, in first frame, best shot of Bob):

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Sean Buckner - rig owner/operator - guy with hat:

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Scott, Sean, Bob - left to right:

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Spotter Doe - (Chief Gauge Monitor):

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Driver 2 (and, right to left, Spotter Doe and (what's left of) Bob Buxton):

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P.S. I also wanna retract:
Tad Eareckson - 2016/10/21 04:03:35 UTC

The towline snagging on the sage...

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...was a significant factor in the acceleration of the lockout and severity of the impact.
Upon reviewing the actual rolling film I'm saying it didn't have had any measurable/detectable contribution to the outcome.
---
Edit - 2016/10/22 20:52:00 UTC

Pretty sure I've gotten Scott Buxton and Sean Buckner reversed. Will edit this post accordingly.
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Edit - 2016/10/23 04:45:00 UTC

No I won't. I'd gotten Scott and Sean reversed but the next post takes care of everything.
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