SUMMERLAND DRAGS 2012

[TheAlchemist]

This may be a silly question but i've never hid the fact that im new to drag racing etc, i have a friend with a "slipper clutch" and someone else was talking about a "lock up clutch" or something similar for drag racing. My understanding of the slipper clutch is to allow the clutch to 'slip' will downshifting or backing off at high revs etc ie: into corner and dropping back a couple of gears it slips so you don't lock up the rear and crash? Someone please correct me if i'm wrong. But what is the idea and application with a drag clutch, how do they work, what kind are they? Just learning more and keen to know....
Cheers in advance for any help