It's almost embarrassing how little I know about the individual band members except Bruce, considering I've been fan of the group since the early 90s. I just did a little research on Nicko McBrain -their drummer. From what I can find it seems he's far from your average metal drummer.
Wikipedia comments on Nicko's drumming style:
McBrain's drumming has been an important element of Iron Maiden's sound from 1983's Piece of Mind onwards, with guitarist Adrian Smith remarking that, "he always had the chops and the technique, but in Maiden he really exploded, to the point where a lot of stuff we did after he joined was then founded on his playing, all those busy patterns he does, displaying tremendous technique." As described in detail on the band's 2004 The Early Days documentary, the opening track of "Where Eagles Dare" famously displays McBrain's ability to use the single drum pedal very quickly, plus his rapid tom fills.
He is often considered among the best and most influential heavy metal drummers. In the 2008 Live After Death DVD, Steve Gadd, McBrain's then drum technician, comments that, on the World Slavery Tour, drummers such as Tommy Lee would refer to McBrain as an 'octopus' after witnessing the way in which his stamina gives him the ability to use all of his large signature drum kit in concert.
McBrain often employs the back end of his left hand drum stick to allow for more powerful "snare hits". He is known for not using a double bass pedal, with Bruce Dickinson commenting that he refused to use one on "Where Eagles Dare", considering them 'undrummerish'. He claims to have only ever used a double pedal once on "Face in the Sand", from Dance of Death, preferring to use a DW 5000 Accelerator single pedal.
Steve Harris remarks that "...he can play all kinds of music. Drummers from other bands sit round the back of him to see what he’s doing, but he’s got his kit set so he doesn't even look at what he's hitting half the time" After McBrain joined the band in 1982, Harris also noted how much easier playing with McBrain was for a songwriter, with Adrian Smith claiming that, "Steve loves playing with him. [They] used to work for hours going over these bass and drum patterns."
Wow. I don't know anything about drumming, but I understand that double bass pedals make two strokes for every foot move. And he did use something extra for "Face in the Sand", an accelerator pedal. I don't know how an accelerator works or what it does, but it is still single pedal (the double pedal was just one performance).
Excerpt from Nicko McBrain's biography on Maidenfans.com:
You see, unlike most drummers, say Lars Ulrich (Metallica), Vinnie Paul (Pantera) or Paul Bostaph (Slayer) Nicko doesn't use a double bass drum pedal. Nicko only uses a single bass drum pedal. But, over the years, Nicko has developed a technique that allows him to kick faster than many drummers who actually use a double pedal -- he's also being described as having 'probably the fastest right foot in rock'.
Check this out:
" But, personality aside, Nicko would have to be the best drummer in the World still using a single bass drum pedal. Nicko has developed a style of playing which allows him to kick faster than many other drummers who actually use a double pedal… "
(Source, Iron Maiden FC biography (1999)
I wish I could tap "X" as fast as he kicks the drum pedal...