Cobra Roll Question

Friday, December 7, 2001 4:00 PM
Are both sides of a Cobra Roll, Sea serpant, Batwing the same size?

I Learned the reflection theory today and it came into my head.

Geometry.

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Friday, December 7, 2001 4:51 PM
No. Usually the second "flip" is smaller or tighter than the first portion because speed is lost to gravity and friction; To keep the same G-forces, the turn must be smaller.

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Jes
Webmaster, Jes's Roller Coasters
"Thank You Jeff Putz"

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Friday, December 7, 2001 5:35 PM
This is a good example of a boomerang/batwing (Arrow boomerang to be presice.)

http://www.coastergallery.com/1999/GA22.html

You can see the train is exiting the loop, and that side of the element is lower, for the reason Zero-G said.

However, on shuttle coasters with cobra rolls/butterfly turns/boomerangs (the thing on Batman & Robin and all variations of Vekoma Boomerangs) they are identical on both sides. Look at http://www.coastergallery.com/2000/PGA12.html for an example.

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Hi! I'm Hungry, whats your name?

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Friday, December 7, 2001 6:11 PM
from the pictures I've seen (specifically those at RCDB), the exit of the batwing inversion on Montu is higher, but tighter than the entrance.  can anyone explain this because logic dictates that it should be lower as stated above.
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Knott's Berry Farm Cuba ~South Park
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Saturday, December 8, 2001 12:37 PM
... to burn speed beofore the mid course brake section. B&M has little tricks to keep the pacing for all it's rides.

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Jes
Webmaster, Jes's Roller Coasters
"Thank You Jeff Putz"

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