Concert Grand Trucks

[John Ross]

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Re: Concert Grand TrucksHi Ed,
I use scissor jacks, I find them to be more controlable, on the way down.
When I use a hydraulic jack, with a weight on it, it comes down with a rush, when the valve is opened.
Just my take.
Regards,
John M. Ross
Windsor, Nova Scotia, Canada
jrpiano@win.eastlink.ca
  ----- Original Message ----- 
  From: Ed Sutton 
  To: College and University Technicians 
  Sent: Friday, March 28, 2003 2:43 PM
  Subject: Re: Concert Grand Trucks


  Avery,
      Yes.  In both my cheap version and the Jansen transporter, the sensitivity of the hydralic jacks is a real joy to the piano technician's obsessive mind.  You can lower the piano until the legs just touch the cups on the arms, then go around tweaking the valves to your heart's content as the weight is almost impercepibly transferred to the truck.
          Ed
      

  ----- Original Message ----- 
    From: Avery Todd 
    To: College and University Technicians 
    Sent: Friday, March 28, 2003 12:54 PM
    Subject: Re: Concert Grand Trucks


    Wim,


    If I'm understanding Ed correctly, the entire piano is lifted just
    enough for the truck to clear under the legs, then after removing
    the casters, the legs are let down one by one. The truck is already
    positioned under each leg with just a little clearance, hence the
    arms have nowhere to go except the bottom of the leg. At least
    that's my take on it. Correct me if I'm wrong, Ed.


    Avery


      In a message dated 3/28/03 10:52:46 AM Central Standard Time, ed440@mindspring.com writes:

        You can lift the piano as long as needed to remove the
        casters and position the truck arms, then gently lower it.  There will be no
        problems with the truck flipping up, no need to shim under the ends of the
        truck arms.



      Ed

      I don't know how you do it, but I have to put something under the first and second arms to keep the whole truck from flipping up.  Can you explain how you do it without the shims.

      Wim


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