#### Matt N

##### CF Legend

I only ask because it seems very high for a drop of 205ft like RCDB states the Big One's is; I did some SUVAT calculations, and when applying

**v2 = u2 + 2as**to the problem (For those of you who don't know about SUVAT, v = Final Velocity, u = Initial Velocity, a = Acceleration and s = Displacement), I calculated that the highest speed it could possibly hit is around

**78.6mph**(if my SUVAT calculations and unit conversions are correct), and that is before factoring in real world factors like air resistance, angle of descent and the turning motion of the drop (SUVAT never factors in air resistance and assumes a straight freefall, so this result is effectively the terminal velocity of an object falling straight down from 205ft in the air with no air resistance whatsoever). For clarity, I set u to the lift speed of

**6mph**I once heard quoted (converted to m/s;

**2.6822m/s**, in case you're wondering), a to the known value of gravity

**9.81m/s2**, and s to

**62.484m**(205ft in metres).

I could well have gotten my calculations wrong, but I'll admit I am racking my brains slightly as to how Blackpool got the extra 6.4mph... if my calculations are correct, the ride would have to be falling at least

**73.233m**(240.2ft) under its own weight or would have to start from an initial velocity of

**14.762m/s**(33mph) on the existing drop to hit 85mph even under SUVAT, which assumes no air resistance and doesn't factor in things like angle of descent etc... I know the Big One doesn't go underground (a 240.2ft drop from a height of 235ft would require some kind of trench or tunnel, which the Big One doesn't have), and while I don't know for sure, I'm also guessing that the lift hill speed is nowhere near 33mph; that would border on a launched lift!

Does anyone know any more? I know the 235ft height claim is said to be derived from the ride's height above sea level, but I've never heard anything about where 85mph came from. However, everything official, including the ride's design team, says nothing but 85mph for the Big One's speed and 235ft for the Big One's height. I'm also a little stumped as to where RCDB got 213ft height, 205ft drop and 74mph from, as I've never heard these stats anywhere else (everything else says 235ft, 85mph; the only stat Blackpool seemingly concurs with RCDB on is the length of 5,497ft), but I'll admit that 74mph does seem more logical than 85mph given RCDB's claimed stats.

I guess I could just have gotten my SUVAT calculations wrong, but I'll admit that it is confusing me...