Vintage Simmons Drums (UK) Users Group

Great idea. Didn’t think of 3D printer. Not that I know anything about them and how to copy something like this to a format a 3D printer understand.

http://snw.lonningdal.no/sds7/sds7_key_5.jpg

 

hans

 

Fra: Simmons_Drums@yahoogroups.com [mailto:Simmons_Drums@yahoogroups.com] 
Sendt: 29. april 2016 11:40
Til: Simmons_Drums@yahoogroups.com
Emne: [Simmons Drums] Re: [Simmons Drums] Re: [Simmons Drums] SDS7 – Bus-board float mounting

 

  

Those contact guides ought to be easy to replicate. Either with a sharp 
knife and some random plastic or via 3D-printer...

-- 
electronically yours, jesper

- -- --- ---- ----- ---- --- -- -
www.electronic-obsession.se

---

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Den 2016-04-17 kl. 12:39, skrev 'Hans' hr.public@... 
[Simmons_Drums]:
> 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@yahoogroups.com>
> [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
>
> - -- --- ---- ----- ---- --- -- -
> www.electronic-obsession.se <http://www.electronic-obsession.se>
>
> ---
>
> Angaudlinn on iTunes:
> https://itunes.apple.com/us/artist/angaudlinn/id582356650
>
> Angaudlinn's playlist på Spotify:
> http://open.spotify.com/user/simplyanalogue/playlist/540Srd3zA15pK7G1S8qLHo
>
> Angaudlinn on facebook:
> https://www.facebook.com/Angaudlinn
>
> Den 2016-04-16 kl. 23:59, skrev hr.public@...
> <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
> >