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Posted: 7/2/2023 8:53:31 AM EDT
[#1]
 Fury 325 Crack! Engineering Analysis and Response |
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Posted: 7/2/2023 9:04:11 AM EDT
[#2]
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Posted: 7/2/2023 9:07:10 AM EDT
[#3]
Quote HistoryI had that link copied and ready to post. Interesting |
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Posted: 7/2/2023 9:29:59 AM EDT
[#4]
Carbon fiber is the future.
Welders are a thing of the past. |
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Posted: 7/2/2023 9:30:21 AM EDT
[#5]
Quote HistoryQuoted: I know you posted that in jest but check this out: https://www.ar15.com/media/mediaFiles/64958/FB_IMG_1688244717980-2870749.jpg Quote HistoryQuoted: I know you posted that in jest but check this out: https://www.ar15.com/media/mediaFiles/64958/FB_IMG_1688244717980-2870749.jpg my guess is to keep rain water out while they plan the fix. Nothing like repairing to corrode from the inside out |
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Posted: 7/2/2023 9:41:54 AM EDT
[#6]
That ride is done for the season. That's a custom welded part and going to be replaced from its mounting points, along with inspection of that entire coaster.
Out local park is Kings Dominion, with has numerous premier rides closed since last year. They haven't given any details but its piss-poor they don't provide any reason or notice to visitors that drive hours to visit. Cedar Fair has really gone downhill with its management. |
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Posted: 7/2/2023 9:47:15 AM EDT
[#7]
Man, I am 1 state over. I could have been on that. Counting my blessings
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Posted: 7/2/2023 10:00:01 AM EDT
[#8]
Why would Carowinds keep that coaster open for one more circuit when patrons made them aware of the crack?
Oh, wait… Never mind. |
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Posted: 7/2/2023 10:03:18 AM EDT
[#9]
Quote HistoryQuoted: I’m not a roller coaster designer or engineer but I did want to be one as a kid. I feel like they designed this backwards. There’s nothing really supporting where the force from the track is being pushed. https://www.ar15.com/media/mediaFiles/286798/1E49775E-BFC3-478E-99CA-CCD635C47602_jpe-2870744.JPG You have some natural engineering intuition. It cracked from fatigue that occurs from tension loading. If the support was placed on the outside there would be less tension loading in the connection. A better connection detail between the vertical an diagonal support would also help to reduce the risk of fatigue. |
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Posted: 7/2/2023 10:03:37 AM EDT
[#10]
Anyone blame it on Trump yet?
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Posted: 7/2/2023 10:04:13 AM EDT
[#11]
Quote HistoryQuoted: Carbon fiber is the future. Welders are a thing of the past. Lets build a deep sea submersible out of CF................ I'd LOVE to see CF used instead of steel in high pressure gas mains. Well, except if some tard scrapes the side of it just a wee bit. Steel has some ability to resist scrapes and such, CF, not so much. |
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Posted: 7/2/2023 10:08:36 AM EDT
[#12]
Quote HistoryQuoted: pros: -It was still doing its job, mostly -They shut the ride down before tragedy cons: -It was noticed by visitors rather than safety inspectors This. I wonder when the State did their last inspection? |
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Posted: 7/2/2023 10:13:08 AM EDT
[#13]
I thought they did daily inspections on these badass roller coasters! Or did they just pencil whip this one?
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Posted: 7/2/2023 10:25:20 AM EDT
[#14]
Quote HistoryQuoted: I thought they did daily inspections on these badass roller coasters! Or did they just pencil whip this one? In aircraft maintenance, we have a system of official inspections (100 hour, annual, progressive, etc), and a system of unofficial inspections (100 foot, 50 foot, 20 foot...). The unofficial inspections are used to determine how badly you want to try to get management to assign you to work on any plane other than the one in question. Maybe the park got the two systems of inspections confused? |
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Posted: 7/2/2023 10:30:43 AM EDT
[#15]
Quote HistoryQuoted: You have some natural engineering intuition. It cracked from fatigue that occurs from tension loading. If the support was placed on the outside there would be less tension loading in the connection. A better connection detail between the vertical an diagonal support would also help to reduce the risk of fatigue. A support placed on the outside would increase the footprint of the ride, and parks seem to try to cram as many rides as possible into the space they have. |
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Posted: 7/2/2023 10:51:16 AM EDT
[#16]
Ooof. I do some welding at work. Thankfully, it's nothing that critical.
The welder, contractor, and inspector that have their names all over the paperwork for that are probably not having a super awesome 4th of July right now. But noone died, so I suppose they can be glad they're atleast not looking at jail. |
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Posted: 7/2/2023 10:52:23 AM EDT
[#17]
Quote HistoryQuoted: A support placed on the outside would increase the footprint of the ride, and parks seem to try to cram as many rides as possible into the space they have. Was going to post this. |
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Posted: 7/2/2023 11:11:21 AM EDT
[#18]
Quote HistoryQuoted: A park patron saw it and alerted everyone. The park claims ‘they inspect their rides every morning’….sure they do. You know that they're gonna look at those logs and find out who was doing those "inspections".
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Posted: 7/2/2023 11:15:04 AM EDT
[#19]
Quote HistoryHe left out the gravitational eccentric load in his FEA model produced by the weight of the structure, and the passing coaster car. |
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Posted: 7/2/2023 11:29:58 AM EDT
[#20]
Holy shit
 Quote HistoryQuoted: Glad it got caught before anybody was killed. This - that's a complete break, not a crack. |
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Posted: 7/2/2023 11:45:45 AM EDT
[#21]
Quote HistoryReally good analysis, and broke exactly where it should have given the loads. I know a lot of people are poo-poo-ing the steel, laughing at the park for bad inspections, etc. Fact of the matter is this is the kind of thing to be expect in a high performance application where the engineers had to make a lot of compromises. I thought his comments about inspection were spot on. Short of being within 3 feet of that joint, which would require a lift of some sort or a pretty complex rigging off the main track, that crack is going to be really hard to see until it gets to the point that it was at. My guess is that part of the "fix" is going to be some ladder rungs up those support posts where someone can do just that on a regular basis. Also, the plastic wrap is probably there to preserve as much evidence as they can for inspection. One of the first things the inspectors will look for is the crack initiation site to confirm the cause of the failure. Was it in fact a poor weld? Was it a material defect in the steel? Was it just an overload / understrength situation by design? |
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Posted: 7/2/2023 11:46:23 AM EDT
[#22]
Quote HistoryQuoted: Lets build a deep sea submersible out of CF................ I'd LOVE to see CF used instead of steel in high pressure gas mains. Well, except if some tard scrapes the side of it just a wee bit. Steel has some ability to resist scrapes and such, CF, not so much. Quote HistoryQuoted: Quoted: Carbon fiber is the future. Welders are a thing of the past. Lets build a deep sea submersible out of CF................ I'd LOVE to see CF used instead of steel in high pressure gas mains. Well, except if some tard scrapes the side of it just a wee bit. Steel has some ability to resist scrapes and such, CF, not so much. Are you a 50yr old white guy ?
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Posted: 7/2/2023 12:17:29 PM EDT
[#23]
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Posted: 7/2/2023 12:21:28 PM EDT
[#24]
Quote HistoryQuoted: Saran wrapped it. Good to go now. https://www.ar15.com/media/mediaFiles/222364/IMG_0339_jpeg-2870993.JPG As mentioned that is to prevent corossion on the inside. My guess is they’ll replace the entire support and redesign that joint based on what they learn. That is a LOT of force. |
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Posted: 7/2/2023 12:30:35 PM EDT
[#25]
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Posted: 7/2/2023 12:35:02 PM EDT
[#26]
Wonder how many other failures are out there on these things awaiting a real inspection to find. Or a fatal accident. Sheesh.
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Posted: 7/2/2023 12:35:43 PM EDT
[#27]
Roller coasters aren't all they're cracked up to be
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Posted: 7/2/2023 12:39:19 PM EDT
[#28]
Quote HistoryQuoted: It looks more like a crappy weld. Quote HistoryQuoted: Quoted: Shit Chinese steel. Road that coaster end of last year. It looks more like a crappy weld. Yeah, I'm thinking propagation from a bad weld. |
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Posted: 7/2/2023 12:40:12 PM EDT
[#29]
steel bends. its what it does. needs to be fixed but its not that big a deal. probably assembled in tension.
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Posted: 7/2/2023 12:43:49 PM EDT
[#30]
That's my son's favorite coaster there. It's always his first and last coaster ridden for the day.
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Posted: 7/2/2023 12:44:30 PM EDT
[#31]
Quote HistoryQuoted: That ride is done for the season. That's a custom welded part and going to be replaced from its mounting points, along with inspection of that entire coaster. Out local park is Kings Dominion, with has numerous premier rides closed since last year. They haven't given any details but its piss-poor they don't provide any reason or notice to visitors that drive hours to visit. Cedar Fair has really gone downhill with its management. We obviously need Chinese financed inspectors for Chinese steel...Biden can appoint the necessary overseers from an approved list given to him by his laison working for Xi. |
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Posted: 7/2/2023 12:45:08 PM EDT
[#32]
Cedar Fair is a big purchaser of B&M coasters (20 out of 124 built), I'm certain that Cedar Fair and B&M are working together to fix the issue.
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Posted: 7/2/2023 12:45:47 PM EDT
[#33]
Quote HistoryQuoted: I think the only story here is how the park missed this for days. Things can break - I think it shows a solid design in the fact that it’s broke clean through at the apex of a turn and still didn’t end in disaster. [Laughs in repeated inspections of the Hernando de Soto Bridge, which damn near saw a collapse.] |
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Posted: 7/2/2023 1:14:15 PM EDT
[#34]
Quote HistoryQuoted: Yeah, I'm thinking propagation from a bad weld. Welding is where caveman meets mettalurgist. |
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Posted: 7/2/2023 1:16:43 PM EDT
[#35]
All I know is I wouldn’t want to be the workers who have to go way up there and fix that thing!!!
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Posted: 7/2/2023 1:21:45 PM EDT
[#36]
Having grown up at Action Park, I’m underwhelmed at the danger level here.
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Posted: 7/2/2023 1:23:15 PM EDT
[#37]
Quote HistoryQuoted: Really good analysis, and broke exactly where it should have given the loads. I know a lot of people are poo-poo-ing the steel, laughing at the park for bad inspections, etc. Fact of the matter is this is the kind of thing to be expect in a high performance application where the engineers had to make a lot of compromises. I thought his comments about inspection were spot on. Short of being within 3 feet of that joint, which would require a lift of some sort or a pretty complex rigging off the main track, that crack is going to be really hard to see until it gets to the point that it was at. Maybe not. Ever consider a drone with high quality video camera? How did they put that plastic around it? Can you move a "car" around and stop to look at it. Extension devices with recording video camera? |
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Posted: 7/2/2023 1:32:56 PM EDT
[#38]
That thing is crazy high.
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Posted: 7/2/2023 1:34:06 PM EDT
[#39]
Quote HistoryQuoted: Maybe not. Ever consider a drone with high quality video camera? How did they put that plastic around it? Can you move a "car" around and stop to look at it. Extension devices with recording video camera? Quote HistoryQuoted: Quoted: Really good analysis, and broke exactly where it should have given the loads. I know a lot of people are poo-poo-ing the steel, laughing at the park for bad inspections, etc. Fact of the matter is this is the kind of thing to be expect in a high performance application where the engineers had to make a lot of compromises. I thought his comments about inspection were spot on. Short of being within 3 feet of that joint, which would require a lift of some sort or a pretty complex rigging off the main track, that crack is going to be really hard to see until it gets to the point that it was at. Maybe not. Ever consider a drone with high quality video camera? How did they put that plastic around it? Can you move a "car" around and stop to look at it. Extension devices with recording video camera? Likely used an articulating man lift. It’s totally possible that up close inspection may be periodical (monthly or whatever and the entire visible failure happened within that last period But what I still don’t understand is how last week people on the ground could see it and it wasn’t flagged. Perhaps daily is by the min wage kids just wanting to get through the day and skipping it. Complacency kills |
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Posted: 7/2/2023 1:36:32 PM EDT
[#40]
My entire lifetime of reason based on absolute terror has been vindicated.
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Posted: 7/2/2023 1:50:48 PM EDT
[#41]
Quote HistoryQuoted: My entire lifetime of reason based on absolute terror has been vindicated.  Somewhere there is coaster designer chuckling to himself, saying "I knew it!"
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Posted: 7/2/2023 2:17:09 PM EDT
[#42]
Quote HistoryQuoted: JB Weld... No. JB can't weld. Thats the problem. |
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Posted: 7/2/2023 3:50:24 PM EDT
[#43]
They need to make one like this with a 3,215 FT drop.
 Failed To Load Title |
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Posted: 7/2/2023 3:58:11 PM EDT
[#44]
Quote HistoryI see the problem. They need five to ten times more structural steel supporting it before I would go in it. |
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Posted: 7/2/2023 4:27:12 PM EDT
[#45]
Quote HistoryQuoted: They need to make one like this with a 3,215 FT drop.  https://www.youtube.com/watch?v=IuTz3SqdBX0 Haganai NEXT - Riding the BLACK DRAGON - Official Clip |
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Posted: 7/2/2023 4:28:25 PM EDT
[#46]
I hate coaster like that. It feels like it's compressing my spine at the bottom of the drops. No thanks.
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Posted: 7/2/2023 4:43:58 PM EDT
[#47]
Quote HistoryQuoted: I hate coaster like that. It feels like it's compressing my spine at the bottom of the drops. No thanks. It’s probably because it is compressing your spine. |
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Posted: 7/2/2023 6:33:36 PM EDT
[#48]
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Posted: 7/2/2023 6:42:32 PM EDT
[#49]
And it was spotted by a random patron who looked up and saw it shifting as the ride was in operation. Not only shit steel or whatever but no safety inspections
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Posted: 7/2/2023 7:24:36 PM EDT
[#50]
Quote HistoryQuoted: And it was spotted by a random patron who looked up and saw it shifting as the ride was in operation. Not only shit steel or whatever but no safety inspections Who knows when it failed? Could've broken within seconds of Jimbob P. Public filming it on his $30 smartphone. |
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