I thought the question was regarding Art Arfons jet bike
Glen
And the answer is that it went up faster than it did forward.
He was lucky it came down on it's tail.
He came back with 3 wheels and it also failed.
"Too old, too bold, very predictable."
Art Arfons Green Monster No. 27 was a four wheeler, there was a pair of small solid wheels directly behind the driver seat.
Also he didn't failed. The problem he suffered, was (he told me this at his place in Akron/Ohio) that the cockpit was not sealed properly, so he got a lot of salt in his cockpit with the result that he lost the view, also effect by the very flat windshield. The other problem was caused from the design - the solid wheels
(may be Art's jet car was the first who runs with solid wheels straight on the salt) - and the missing suspension with the short outrigger on the rear - created some nasty vibration.
The first year with the four wheeler - 1990 - he went on one of his three runs an average of 338 mph.
When he "flew" in 1989 with the motorcycle the bike was around 250 mph when he left the ground....