Joker's Jinx at Six Flags America Valleyed Again

[Paradox]

That ride is such a nightmare, and an eyesore to boot.

Why does the park not use full power on launches?

[Paradox]

Full power costs more money

Where is the evidence that says they aren't using the launch system at its full capacity?

I think it's most likely to have been caused by either wind or passenger load.

I managed to get it stuck in NL2.

I launched it at 47 MPH.

[Turbo]

they have the correct ride type in nl2...

[Mikey]

This was likely caused by failing LIMs or friction values on the train set to high or a combination of both.

I should explain that the LIM systems on these rides are very primitive and by modern standards considered obsolete. Modern systems can adjust to account for under performing LIM modules within a chain, where as these are basically individually triggered in timed sequence relative to a base location. If they fire, great, if they don't, well theres a few backups in there just in case. Until those fail too, in which case:

Dumbasses

[Dirk_Ermen]

Looks more like a case of not enough cycling after the winterstop.

I do care about the ride that got stuck, but what's the red tower thing on the right in the video?

[Paradox]

lol240 wrote:

I do care about the ride that got stuck, but what's the red tower thing on the right in the video?

The park's getting a new Starflyer for 2017!

^ Oh I got it, thanks! Looks great!

Paradox wrote:

lol240 wrote:

I do care about the ride that got stuck, but what's the red tower thing on the right in the video?

The park's getting a new Starflyer for 2017!

And in typical SF fashion the 2017 season has begun and construction is only a little done

[mkingy]

Mikey wrote:

This was likely caused by failing LIMs or friction values on the train set to high or a combination of both.

I should explain that the LIM systems on these rides are very primitive and by modern standards considered obsolete. Modern systems can adjust to account for under performing LIM modules within a chain, where as these are basically individually triggered in timed sequence relative to a base location. If they fire, great, if they don't, well theres a few backups in there just in case. Until those fail too, in which case:

If I recall correctly Intamin cable launches have an (entirely different system but) similar method of regulating launches where each launch is monitored in a variety of ways and the system then adjusts the amount of power required for the launch as the day goes on.

[Mikey]

mkingy wrote:

If I recall correctly Intamin cable launches have an (entirely different system but) similar method of regulating launches where each launch is monitored in a variety of ways and the system then adjusts the amount of power required for the launch as the day goes on.

The feed back mechanism on these is based on the RPM of the winch drum which is detected by an encoder. The system increases pressure until RPM is at the value required for exit velocity. If the pressure spikes, say the cable broke, than it sees that from the pressure sensors dropping on the input side of the winch and runs the shut down process. There are proxy switches through out the launch to know when the train has passed certain locations so the mags can be released back to the home position and I believe in later models these are also used as speed gate proxies. Generally a series of gate proxy switches exist at the end of the launch, and these are used as an intermediary to verify exit velocity.

[mkingy]

Thanks for the more detailed information

[Mikey]

Pictures leaked showing the failure that occurred to cause Jokers Jinx to valley.

I see nothing wrong.

[Coasterkidmwm]

That's a screw up

Christ almighty that could've actually been a lot worse than it was.

I'd love to know how that happened; it shouldn't be able to happen!

[Turbo]

so much rust.

Lol Six Flags is giving up