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joethezombie

SCSI2SD Mount for the SE/30

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Some of you may remember my "Universal Mount" for the SCSI2SD.  It works well for mounting the SCSI2SD v5 or v6 boards in pretty much any Mac, but I've never been happy with how it mounts in the compact Macs:

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As you can see, it's upside-down, and it is hard to get to the SD card.  You can mount it the other way around, but then it mounts really high above the drive cage, and the SCSI cable is oriented backwards, so you have to twist it.  It also leaves a huge area of wasted space.  So, with my wife out the state for a few weeks, what better way to spend the down time by improving it for my target machine, the SE/30.  Or really, the 805-5050 floppy drive cage, of which it mounts on top.

 

Here's what it looks like:

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And perched on top the floppy drive with the stock LED attached to the periscope!

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Used in conjunction with a longer SCSI cable, the cable is run under the mount, and is oriented correctly to connect to the logic board without having to twist it!  And it works for both v5 and v6 boards!

post-1870-0-96672900-1510976965_thumb.jpgpost-1870-0-55470000-1510976974_thumb.jpg

 

I also included mount points to orient the SCSI2SD the "normal" way, but you'll have to twist the cable when connecting to the logic board:

post-1870-0-99944100-1510976995_thumb.jpgpost-1870-0-13595600-1510976983_thumb.jpg

 

Here it is installed.  There's so much room for activities!

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The first version has a few problems.  First, the tabs that lock into the 805-5050 are too wide, so I had to snip them to size.  The whole thing is also 1/8" too long, so I'm worried if tightening the screws it might crack the rear tabs.  Also, the mount points for the SCSI2SD are slightly too far foward, which blocks the power connector on the v6 board.  I've made changes to the model, and when I get free time at the library again to print another one, I'll make sure everything is good, and then I'll release the design files here.  Stay tuned!

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Thanks guys!

 

Could you do a slimmed down version without the LED holder? I needed a scsi2sd mount for my 2x800k SE and this could work great!

 

Yeah, good idea!  So on the 2x800k SE, does it just use two 805-5050s stacked on top of each other, or are the cages a bit different?

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Way cool, Eagle!  My first prototype looked exactly like that.  The problem was, the 3D printer at the library couldn't print such a large flat surface without it becoming very wavy.  That's why I ended up moving to the thicker beam layout.  I do think my beam thickness could probably be reduced significantly.

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Lovin' all of these ideas. How far does the MicroSD card protrude from the edge of that red PCB above?

 

With a tiny bit of jeweler's file work, a horizontal MicroSD slot aligned with the activity LED might not be noticeable.

 

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Worst case scenario: file ALL the cooling slots to the same profile for better cooling and maybe even full SD Card stealth installation?

 

 

 

The crazier approach (my personal favorite  [:o)]]'> ) would be to check for available cubic to reprise the Hanging Bat HDD Hack in my IIfx. If there is clearance between  the chassis floor under the FDD and top of the ROM and RAM SIMMs, under the chin cooling vents become the obvious choice for SD/MicroSD card slot positioning.

 

That particular chink in the bezel has always been my access slot of choice for a PowerPC/Compact/CD hack. [}:)]]'>

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Way cool, Eagle!  My first prototype looked exactly like that.

 

Very cool! I was on a similar track as well for my 2.5" Savvio SCA HDD installation, but the thin aluminum of a piece of step-flashing (under $1 per) was my prototyping material of choice.

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Can't say as I blames ya there. I'm in a different position as many of my Macs were bought "known" to be DOA or as empty hulks specifically intended for case hacks. Sometimes I've needed to buy replacements for deaders that responded well (if undesirably) to poking and prodding done out of curiosity. :-/

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Sorry all!  I had to take a small sabbatical to deal with some family life, but I will print out v2 at the library tomorrow and if everything works out, I'll post the design files.  I made two of them, one with the periscope for single-floppy compacts, and one without for the dual-drive SEs.  Of course, one could always just nip off the periscope.

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Finally guys, here's the final design.  I'm really happy with it!

 

Remember to clean and tap the holes with your desired screw size to decrease the chance of splitting.  Holes are 3/32", which worked very well for my self tappers.

If I were to do this over again, I probably would have made the beams a bit wider.  I think low quality printers might have issue with the small beam size in relation to the hole size-- it gets pretty thin.  If you have problems, maybe fill the holes for printing and drill them after the fact with a press.

 

Good luck!

Compact mount for SCSI2SD - WITH Periscope.stl

Compact mount for SCSI2SD - NO Periscope.stl

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On 3/19/2018 at 6:35 PM, joethezombie said:

If I were to do this over again, I probably would have made the beams a bit wider.  I think low quality printers might have issue with the small beam size in relation to the hole size-- it gets pretty thin. 

 

So I just couldn't leave good enough alone, so here is the final revisions of the Compact Mac mount for SCSI2SD v5 and v6 (should work with v5.1 as well).  This revision has thicker and wider beams for printing in lower quality printers.  Even though the 3DHubs guy printed the previous one OK, the library had problems, and it didn't work out.  This new revision was able to be printed at the library as well:

 

IMG_1932.thumb.jpg.ee9f0ad3439169ecc4ca5f0ce7930457.jpg

 

Enjoy!

 

 

Compact mount for SCSI2SD - WITH Periscope (final).stl

Compact mount for SCSI2SD - NO Periscope (final).stl

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