rapid repeated notes

[liszmaninopin]

There is a passage in a Ligeti etude I'm working on that offers an interesting difficulty.  At a tempo of quarter=132, I need to play repeated sixteenth notes on the fifth finger of the left hand.  Has anybody ever encountered something like this before?  If so, how did you surmount it?  I can approach tempo, about quarter=110-120, but can't quite reach it.

[faulty_damper]

You have to alternate fingers on the key.  I doubt it can only be done with only finger 5 at that speed.  If you have your other fingers free, then you have to alternate your fingers.

Depending on how many repeated notes, try 54321 |:4321:|.

[comme_le_vent]

what?!

youre playin 8 notes a sec on ur lh pinky?

[super_ardua]

Try vibrating your arm

[liszmaninopin]

Thanks for the suggestions.  Yeah, the only way I can achieve the tempo I do (still too slow) is through a combination of rotating and vibrating the arm.  The only other finger I might be able to bring into play is the fourth finger, because my thumb at the same time is also striking notes.  I'll go try some of your suggestions now.

[liszmaninopin]

Comme,

My earlier numbers were somewhat mistaken.  I just went and tried tapping my desk with a metronome counting, about the fastest tempo I got on the fifth finger alone was 100 bpm.  Try it, perhaps you'll suprise yourself.  You just need to loosen up your muscles.

[super_ardua]

I think it just needs practice,  because with rotating and vibrating,  I can get the 140,  and with finger movement I can get to 120.