Vintage Simmons Drums (UK) Users Group

  > I agree with that logic Jesper J Sadly on my 9 voice I have to reseat at
  > least one voice, usually two or three after lifting the unit from the
  > table.
  >
  > I’m missing most of the key inserts, but I’ve narrowed it down to not be
  > the main problem. Although if I float the bus-board I need to figure out
  > a way to make me some new keys without spilling glue all over the contacts.
  >
  > While thinking of mods. Can I ask if someone have addressed heat issue
  > that come with more modules? I’m thinking of possible mechanically
  > couple the heat sink on the power supply to chassis to lead heat out of
  > the box? Just to add some 10-20 years life to the silicon inside.
  >
  > Hans
  >
  > *Fra:*Simmons_Drums@yahoogroups.com
  > <mailto:Simmons_Drums@...m>
  > [mailto:Simmons_Drums@yahoogroups.com]
  > *Sendt:* 17. april 2016 11:30
  > *Til:* Simmons_Drums@yahoogroups.com <mailto:Simmons_Drums@yahoogroups.com>
  > *Emne:* [Simmons Drums] Re: [Simmons Drums] SDS7 – Bus-board float mounting
  >
  > Hi,
  >
  > my 12-voice SDS-7 have never displayed any contact issues so I'm
  > thinking: why fixing something that ain't broken? But on the other hand,
  > comparing to modular synthesizers I can get the benefits.
  >
  > Keep us posted if you decide to go through with the plan.
  >
  > --
  > electronically yours, jesper
  >
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  >
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  >
  > Den 2016-04-16 kl. 23:59, skrev hr.public@lonningdal.net
  > <mailto:hr.public@...>[Simmons_Drums]:
  >> I’m wondering if I could have some input or even experience from users
  >> that have tried to float the bus-board on SDS7?
  > >
  > > Here is what I’m thinking. As we all know when the bus-board is rigid as
  > > Simmons intended it to be voice boards will lose contact when chassis is
  > > warped. What will happen if the bus-board is given the opportunity to
  > > flex? Here the rather thin PCB (for its size and function) might come to
  > > our advance as it does twist quite easily without much force.
  > >
  > > The general idea is that we put pressure from back of bus-board and let
  > > it warp rather than forcing voice boards with wrong angle into the
  > > bus-board.
  > >
  > > For practical implementation some patience with a Dremel cutting disk is
  > > needed to remove the front lips for the bus-board rails inside the lid.
  > > Leaving the backside of the rails where we glue on foam or try out some
  > > soft rubber strips for (car) doors.
  > >
  > > At the bottom of the bus-board I’m wondering if screws can be replaced
  > > with those anti vibration/flexible silicone rubber pins popular on
  > > computer cooling fans?
  > >
  > > For this to work ALL voice boards and CPU/memory MUST have the key
  > > inserts between pin 18-19 in place. Some experimenting to get
  > > correct/even back and front pressure will be expected.
  > >
  > > Appreciate all comments. I’ll be surprised if similar isn’t already
  > > implemented and tested in some way or another past three decades.
  > >
  > > TIA
  > > Best
  > > Hans
  > >