Pnumaticic Benches

Conrad Hoffsommer hoffsoco at luther.edu
Mon Mar 13 11:36:07 MST 2006


At 10:45 AM 3/13/2006 -0500, you wrote:
>Just a follow-up to this thread.
>
>We have a "Boesendorffer" Adjustable bench at the University, had it for
>a long time.
>
>The original post for this thread did not specify the problems that were
>being encountered but let me throw in this.
>
>Our bench does not have a major hose/tank malfunction but what does
>happen is that after the tank has been charged with 45-50# of air the
>bench will work well for a while, then, the seat will start to lower
>very slowly when someone is sitting on it. The rate of sag varys with
>the size of the person doing the sitting!!
>
>What I have found is that if I sit on the bench, lift the handle and let
>the seat go all the way to the bottom, repeat this several times, the
>bench will regain its adjustability and stability.
>
>Lasts for a good while....don't ask my why.
>
>Hope this makes some sense.
>
>Paul E. Dempsey, RPT
>Piano Technician Sr.
>Marshall University
>Huntington, WV
>304-696-5418


I think what you are doing is, in effect, "bleeding the line".   I've 
noticed the same phenomenum.
Try 55# next thyme and see if it happens.





>304-617-1149
>
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Conrad Hoffsommer

All I ask is a chance to prove that money can't make me happy.



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