Plate Suspension

[David Love]

It's a simple bar which spans and then clamps onto a couple of the plate
struts and can be easily slid back and forth or side to side to find the
point of equilibrium. It has a place to fasten a large hook from the hoist.
I was a bit paranoid about it's overall strength and balance at first and,
admittedly, don't have a way to assess it's failure point. I'm operating on
faith but it is very easy to use and take in and out with dealing with
straps. I have not lifted a "D" plate with it. I'd be curious if any
engineer types are familiar with this and have any comments about what kind
of load it will take, concerns or otherwise. I am assuming that Bolduc had
it engineered when he offered it for sale to the general public. 
 
David Love
davidlovepianos@earthlink.net
 
 
> [Original Message]
> From: gordon stelter <lclgcnp@yahoo.com>
> To: <davidlovepianos@earthlink.net>; Pianotech <pianotech@ptg.org>
> Date: 6/26/2004 12:07:21 PM
> Subject: RE: Plate suspension
>
> Please describe, David, 
> I have been extremely happy with the 3-point 
> ratchet strap method ( I have lifted a concert grand
> plate with three of the 1,500-pound-test variety ) and
> a chain hoist. I like this method because clicking
> the ratchets allows very easy incremental adjustment
> of the plate's attitude. My only cautionary note is
> that some unscrupulous stores sell "el-cheapo" ratchet
> straps, whose mechanisms are stamped out of
> tin-can-thin steel, and obviously not up to the task!
> Beware !!! 
> If in doubt, please buy the designated heavy-duty
> variety!
> Thump
>
> P.S. To protect rims I like scraps of Naugahyde(TM),
> or generic equivalent, available from fabric stores.
> Anyone have a better idea?
>
> the --- David Love <davidlovepianos@earthlink.net>
> wrote:
> > An portable pneumatic engine hoist and Balduc's
> > plate suspension bar are
> > quick and easy, no ropes, no straps.
> > 
> > David Love
> > davidlovepianos@earthlink.net
> > 
> > 
> > > [Original Message]
> > > From: Greg Newell <gnewell@ameritech.net>
> > > To: pianotech <pianotech@ptg.org>
> > > Date: 6/25/2004 1:31:41 PM
> > > Subject: Plate suspension
> > >
> > > Greetings list members,
> > > I've been dissatisfied with the rope
> > system I've been using to 
> > > hoist plates and have been thinking of changing to
> > something else for
> > this 
> > > purpose. I was wondering what the collective
> > experience and intelligence 
> > > out there could share. In the past I have used
> > ropes judiciously placed
> > at 
> > > three points on the plate and tensioned as evenly
> > as I could before the 
> > > hoist ( engine cherry picker) was engaged. While
> > I'm not terribly fond of 
> > > the engine cherry picker since it lifts in a
> > slight arc it will have to
> > do 
> > > until I get the air hoist motor rebuilt and some
> > strong frame to hang it 
> > > from. That however is not my present concern. My
> > issue lies with the
> > ropes. 
> > > It seems that they dig in just a bit and can cause
> > some minor chipping. 
> > > I've thought of purchasing the Buldoc plate puller
> > from Pianotek but was 
> > > even thinking of something a little more simple,
> > like web straps that the 
> > > movers use but with "D" rings sewn into each end.
> > The straps could be
> > only 
> > > a couple of feet long and since they are 2" wide
> > they would provide
> > plenty 
> > > of support without digging in. Has anyone tried
> > this before? Are there
> > any 
> > > other ideas out there for replacement of the
> > ropes?
> > > Thanks for sharing.
> > > Greg
> > >
> > > Greg Newell
> > > Greg's piano Fort?
> > > mailto:gnewell@ameritech.net 
> > >
> > >
> > > _______________________________________________
> > > pianotech list info:
> > https://www.moypiano.com/resources/#archives
> > 
> > 
> > 
> > _______________________________________________
> > pianotech list info:
> > https://www.moypiano.com/resources/#archives
> > 
>
>
>
> 
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David Love
davidlovepianos@earthlink.net