Steepest traditional coaster?

I was thinking of MF & how its drop is 80 degrees, then couldn't think of a steeper one. Forget X, HS:XLC, Oblivion (it's specifically designed to have a 'vertical drop,' just look at it's trains,) Xcelerator & others.

I wonder if we will see a 90 degree drop on a traditional coaster, perhaps the Heide Park Tera will have one?

the coaster that the little people in my head ride has a 110º drop... its 666 feet tall and has a 420 foot vertical loop

I believe Expedition Ge Force at Holiday Park, Germany is 82 degrees, I think that ride is best described as Millennium Force only 120ft (or 150, depends on how you measure it) shorter.
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You are elimnating some of the "traditional" coasters already!!  Mostly X & Xcelerator, X could be a stretch, But Xcelerator is a simpler hyper-twister.

If you mean "traditional" coaster, the record was held by the Magnum XL-200 at Cedar Point, and was tied with Excalibur at Valleyfair. On a wooden standpoint, the steepest woodie is the Cyclone at Astroland.