The perfect Bump

gordon stelter lclgcnp@yahoo.com
Wed, 15 Jan 2003 13:16:18 -0800 (PST)


Does this work on Gnabes?
     Thump

--- Richard Brekne <Richard.Brekne@grieg.uib.no>
wrote:
> Hi folks
> 
> 
> I found the neatest trick for regulating the height
> of the repetition
> lever today. No doubt this is not new for some of
> you, but I have never
> heard this one before. In anycase it results in the
> most even aftertouch
> I have ever had.
> 
> The key to it is that when letoff and drop are set
> correct then a
> incorrect repetition lever height will result in
> these two adjustments
> not engaging at exactly the same time. So.... rough
> in pretty cleanly
> letoff and drop, and then bring the hammers up and
> out of the way so you
> can look directly down at the top of the jack and
> repetition lever. If
> the key hasnt brought the whippen up firm against
> the drop screw then
> put a key lead or some other weight so that it does.
> Then very slightly
> press the key front downwards while watching the
> jacks behaviour in the
> repetition lever sleve. There should be no lost
> motion at all. Or just a
> knats whiskers perhaps. You should be able to see
> that the jack just
> barely pushes upwards ( and I mean barely !) and
> nearly immediatly
> begins to push away from its rest position.
> 
> Then go back and fine regulate let off and drop
> followed by a repeat run
> through of the repetion lever height as described
> above. Two, max three
> passes will be enough. The result is a dead on even
> aftertouch feel.
> 
> Hammer rest height, jack to knuckle position, and
> key dip  all must be
> set prior to this of course.
> 
> Try it... you like it.
> 
> Cheers
> 
> RicB
> 
> --
> Richard Brekne
> RPT, N.P.T.F.
> UiB, Bergen, Norway
> mailto:rbrekne@broadpark.no
> http://home.broadpark.no/~rbrekne/ricmain.html
> 
> 
> _______________________________________________
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