Magnum was, in my opinion, a good "mistake" by Arrow. A really good mistake. I personally feel that while Arrow Development pioneered the steel tubular-track coaster, Arrow Dynamics in the last few decades has not adapted the technology to suit larger coasters, especially the loopers. Look at all of the compaints about Steel Phantom at Kennywood (R.I.P.), Viper at SFMM, Drachenfire at BGW, etc. Most of their rides are trimmed heavily as a band-aid to compensate for design flaws.
Magnum is an exception to the rule. It remains one of the best coasters on the planet. It's a little rough in the turns, but that's a problem with virtually all Arrow coasters. The rest of it is pretty smooth.
The neat thing about Magnum is that it pops you big time on the bunny hills heading back. It hurt like crazy the first year because the lapbars were not padded. For the best air, ride in the ejector seat: third seat of the first car.
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Jeff
Webmaster/Admin - CoasterBuzz.com