Talk:Mindbender (Galaxyland)

Inconsistent G forces
The maximum G force of this article differ from that on RCDB (5.2 G's) and Schwarzkopf.Coaster.net (6.78 G's). The German Wikipedia article mentions a remodeling of the coaster (without citing any sources) that reduced the maximum G forces from 6.78 to 5.2 G's. This would only be possible by a major remodeling of the track (i.e. reducing drop height, curvature of turns etc.). Does anyone know sources about such a remodeling?--SiriusB (talk) 11:50, 27 May 2008 (UTC)

Testing with the revised trains post-accident were conducted and G force recorded (max) was 5.5 There has been no major remodel of the track since construction, save for the replacement of the friction braking system with a magnetic one in 2008. The only significant change to the ride was the altered train configuration, but as the speed of the ride did not change, it can be expected that the G forces remained the same as well. I would assume the German article to be citing an unreliable source MikeZy —Preceding undated comment was added on 05:12, 18 February 2009 (UTC).


 * Du you have a reliable source for the 5.5 G? I've recently found another (German) source, the Book "Roller Coaster - Der Achterbahndesigner Werner Stengel" by Klaus Schützmannsky, who also states the 6.8 G peak value. I'd think that the difference is probably due to different measurement techniques. Furthermore, according to Schützmannsky, the Stengel-Team usually determines the G-forces on the body (by measuring the effects on a dummy) which includes the elastic response of the body (e.g. swinging of the head), so that a horizontal force of 1 G on the car can result in more then 2 G on the rider's head. However, this effect should be a minor one or even negligible for vertical forces. But there is still the time resolution issue: If the resolution is too fine every little bump contributes to the G force, but only for milliseconds. It further remains to make clear whether the peak G-force is measured in the loop entrance (first loop) or at the sharp left-upward turn following the first drop (remark: this refers to the 6.8 G whereas the 5.5 G is measured in one of the loops).--SiriusB (talk) 18:42, 19 February 2009 (UTC)


 * Addendum: The article states that the ride duration from first drop to final brake can vary between 59 and 75 or 78 seconds where the larger values refer to normal operation, where the train is slowed down (or the track is less intensely waxed) to keep the G forces less severe. According to the article the 5.5 Gs refer to normal operation while 6.8 G may be reached as the physically possible maximum. However, without a reliable source for this it remains speculative. An additional remark: I doubt that the peak value occurs in the second loop rather than the first one since both loops are identical in size (Schwarzkopf didn't create loops of arbitrary dimensions but mainly two standard sizes for the box-type loops. It is clear that the train cannot be faster in the second loop than in the first one according to Newton's laws. But maybe this is a "bump" effect, too.--SiriusB (talk) 18:50, 19 February 2009 (UTC)

Manufacturer
By the time Mindbender was built, the Schwarzkopf company was run under receivership due to bankruptcy. According to that the name of the company changed to Schwarzkopf GmbH (note: GmbH is similar to LLC, a company with limited liability) and so it wasn't Anton Schwarzkopfs company anymore! This means in fact, that the actual manufacturer was not Anton Schwarzkopf, but Schwarzkopf GmbH. Originally, Anton Schwarkopf should have supervised the whole construction process of this roller coaster. To its customer (namely Triple Five Corporation) the aforementioned circumstance was so important, that it became part of the buyers contract. Unfortunately some people of the newly found Schwarzkopf GmbH didn't want Mister Schwarzkopf aboard any longer - so he was not allowed to put a single feet on the factory plant. What a bad decision this was... In my humble opinion one of the most fatal ride accidents never ever would have happened if only Anton Schwarzkopf was given the chance to perform the job the above mentioned contract advised him to do. 77.10.0.85 (talk) 06:02, 19 October 2013 (UTC) Michael Pantenburg Schwarzkopf Coaster Net

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Specs
The changes I made to the specs were to agree with the two sources I found (and cited). Do you have sources for the numbers to which you reverted? —[ Alan M 1  (talk) ]— 06:06, 15 March 2020 (UTC)
 * Not sure how often you edit roller coaster articles, but you can typically find a link to the RCDB.com entry at the bottom of the infobox. Good articles will also have this cited somewhere within the article body as well. --GoneIn60 (talk) 10:35, 15 March 2020 (UTC)