[Coco] 4 Port MPI PCB artwork (so far)

[S Klammer]

Jim, looks like you have it already; but, let me know ...

Shain
On Mar 8, 2015 10:24 PM, "RETRO Innovations" <go4retro at go4retro.com> wrote:

> On 3/8/2015 7:37 PM, Tormod Volden wrote:
>
>> The bolts are spaced 62mm centre-centre, and 3mm diameter (M3?) so it
>> is 65mm between their outer edges. As can be seen on the side view
>> photo, they are just much longer than they have to be.
>>
> I see that, but as long as they are back far enough, it's of no concern.
>
>> Against what do the grounding tabs make contact? From the CoCo3 picture
>> link I had, only seen from the top, the connector looks pretty much like on
>> the Dragon. Is there a close-up or side view photo of the CoCo connector
>> somewhere?
>>
> This shows a top shot.  See the metal brackets on the end?
> http://s6.postimg.org/638i3rqpt/IMG_7614.jpg
>
> Here is a head on shot:
> http://s6.postimg.org/u4asrhg5d/IMG_7615.jpg
> It's head to see, but the little metal clips are in two pieces, and will
> "grab a FR4 1.6mm board.  However, there is a plastic spacer right behind
> them, so the board cannot go far into the slot
>
> Here is a mockup of the PCB inserted:
> http://s6.postimg.org/e7gm8id4x/IMG_7616.jpg
>
> You cnanot see here, but the grounding ear actually hits the plastic
> spacer .005" before the PCB fingers hit the bottom of the edge connector.
> Thus, I trimmed it off by that much.  So, for specifics, the grounding tab
> has to be .130" *less* in depth than the PCB fingers.
>
> So, I need to know if the same holds true on the Dragon
>
> Jim
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