Answer:
60 mph (it feels faster though!), i went on it for the 1st time when i was 11 and have been going every year since i was 9 (i live 40 minutes away) so if age is the issue, no worries, there are people riding it from age 8-48.
speed: 60 mph
first (biggest) drop: 115 feet
location: lake compounce, Bristol CT, on a mountain side