Definitions by Joshisawesomesauce

Ride cymbal 

A ride cymbal is a type of cymbal that is a standard part of most drum kits.Its function is to maintain a steady rhythmic pattern,sometimes called a ride pattern, rather than to provide accents as with, for example, the crash cymbal. A drummer will normally place the main ride cymbal near their dominant hand.Striking on the bell makes a higher sound.

Listen to some Rush songs,you'll hear the bell being struck,or Son of a gun by Nirvana,the ride cymbal is clearly heard.

Ride cymbal by Joshisawesomesauce February 18, 2009

Double pedal 

A bass pedal with two pedals.Some use two bass drums with two single pedals(this method creates more airflow)While using a double pedal some might use a drop clutch to drop the hi hat until the slave foot is free.

Geore Kollias,Dave Lombardo,Joey Jordison all use double pedals.
The top brands of pedals are Axid,DW,Pearl,Tama,and Yamaha

Double pedal by Joshisawesomesauce February 18, 2009