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About Trash80toHP_Mini

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    Bermuda Triangle, NC, USA

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  1. Trash80toHP_Mini

    Asanté MacCon SE/30 clone

    Yet another amazing example of hardware emerges from BolleWerks™ I may have worked out something applicable way back when I first got my Vonets board. One of my Asante NICs is Thick/ThinNet only. I managed to tuck everything away inside the SE/30 but the antennas. In a clear case the antennas could be displayed anywhere inside and the blinky lights could face forward with a bit more bodgery. Best thing about this gimmick would be that it would turn the ThickNet section of the Thick + Thin/10bT into a second breakout board if you have one on hand to add Bolle's board to your existing setup, doubling your fun.
  2. Phase out of the "Squirrel Cage" having been in early 1988 is interesting as the SE/30 wasn't announced until a few days into 1989. My original 1987 SE had the crossflow fan as does the SE I have now. Also interesting is that the vents on the back of my SE and SE/30 cases are identical with about two-thirds of the opening covered by part of the crossflow unit's minimalist shrouding. I guess they must have been covering all bases? A small portion of the axial fan's entry arc is blocked by the flyback's "cage" in the SE/30. I'm wondering about effective areas involved in the airflow between types. I'm also wondering as to why the replacement fan was two-bladed in the SE, that's very curious? Turbulence induced by the sharp transition from round fan exit to rectangular vent grating definitely induces pressure loss in the axial design's airflow. A Printed replacement housing for the axial fan with a smooth transition might have a measurable, positive effect on cooling the machines, but I wonder if sound would be reduced or let more pass through the vents? Turbulence in the housing might have a muffling effect, dunno? It would be great if someone modeled a replacement housing with "Squirrel Cage" mounting points for 3D printing with a far more more efficient, smooth exit transition than the stock sheet metal box. Making it compatible with replacing the SE/30 unit with a far better modern axial fan design and much improved ducting as well would be ideal. Technically, in terms of lower decibels and better pressure co-efficients the crossflow design should have been superior, but perceptions count. That's easily done, print a clear housing for bolting the (round) entry up to the back of the SE/30's vents with the snail drum housing blasting across the info plate with flame colored streamers.
  3. I finally found the type of fan in the SE, it's not a Squirrel Cage/Centrifugal Fan at all, but a Cross-Flow Fan/Tangential Blower which brings up a question: When did the SE begin to be equipped with axial cooling fans interchangeable with the SE/30? If the changeover was made before the SE started shipping with the SE/30 Chassis it's probably no big deal. But if fan type was changed at the same time as the switch to the "SE/30 Chassis" for the SE it may not a great idea to change fan types unless absolutely necessary. The two PCB/PDS/Chassis design combos have different requirements. The vertical PDS slot design and open chassis of the SE/30 likely requires a lower pressure coefficient for proper airflow easily met by its axial design cooling fan. Dunno, but might be worth looking into as the SE might need a "stronger fan" than the SE/30? Cross-Flow: Squirrel Cage: Who knows?
  4. https://en.wikipedia.org/wiki/Industrial_fan
  5. When it comes to moving air, uniserver is spot on. You likely won't find anything but squirrel cages in an HVAC unit, certainly not in dust collector units. Window box AC units have severe space restraints calling for a wide/high heat transfer coil and a more suitable, if less efficient and noisier fan setup. A dead squirrel cage is the only reason to install the squirrelier type. Just checked, the exhaust grid/opening is the same. Exit of squirrel cage widens to slow down exiting airflow and dampen noise apparently. Seemed a strange setup, but adn't thought of that before, it makes perfect sense.
  6. Trash80toHP_Mini

    Nabbed a 6500/300 with a few differences

    Aha! Learn something new every day. That would handily explain the box of AVID width AV-IN boards I saw on eBay years back. Can't have been a popular option I'd think. Could be, there are no activity LEDs on the cover plate, but the aspect ratio and six visible contacts make me wonder. How many contacts do you use for phone hookups over in jolly old? Modem fits with the metal cover box. 230V ONLY strikes me as odd.
  7. Trash80toHP_Mini

    Nabbed a 6500/300 with a few differences

    Nice! This is the first time I've ever seen the Video-In card with the wide connector and cable hooked up to an AVID card. I wonder why the second PCI NIC, 10/100 maybe? What's up with the CSII NIC? I've never seen one with a plastic housing? Can't be stock, pics please?
  8. Trash80toHP_Mini

    Rare Macintosh Plus with Total Systems Accelerator Board

    That's the thread I was thinking of earlier! Your machine: pic above: Curioser and curioser.
  9. Trash80toHP_Mini

    Rare Macintosh Plus with Total Systems Accelerator Board

    That looks like the same Chassis/PSU combo used for internal HDD installation detailed in another thread. 128K-512Ke didn't have SCSI, the DB-25/Battery Door was standard for SCSI upgrade boards. I've never heard such implementations were any faster than SCSI implemented on the Plus board, does anyone have references on that available? My take would be that the Graphics/SCSI card might be compatible with the pre-Plus series and provides a second bus and not accelerated SCSI performance for the Plus. It might even be slower, benchmarking time. edit: can you get the copyright date off the board? I'm sure it pre-dates the SCSI-2 Fast/Narrow spec by a fer piece.
  10. Trash80toHP_Mini

    Pismo LCD swap

    Sounds good, but a <$100 "untested: no AC adapter" Pismo (or two) seems a much better investment to me. That way you'll probably wind up with spare hinges, boards, assflaps etc. to keep in stock. Mine's in one of the 12" x 15.5" x 2" version of (roughly nesting sized) assortment of boxes available in packs from Staples. I may have to rethink PB storage in light of "Vinegar Syndrome," but they're vertical with the proper side up for venting and the panels are somewhat protected from each other. It's labeled "PartsMo" and such assortments are stored KNEP boxes from IKEA with painted panels for color coding the visual inventory pics. Parts is parts and the more the better over the long run as far as I'm concerned. The DOA WS is complete, but has a craze-cracked panel. The backlight is probably fine if/when needed. Cracked panel Pismo would likely be the same at a great price?
  11. Trash80toHP_Mini

    Pismo LCD swap

    If the panel is fine, but dim, it's likely the backlight. If the backlight isn't an integral part of the replacement panel, swapping LCD portion only likely won't work for you. Assumption would be that panel/backlight is unitized, but just sayin' as we all know how assumptions go.
  12. Trash80toHP_Mini

    Sonnet Crescendo L2 500MHz 1M

    It's interesting that Trio works at all in the TAM as a Tango? I'm definitely curious about how testing goes in your x500 machines. Makes me wonder what it might be about the ATA setup's failure? I've never had luck getting either of mine to work in a 6500 board, but was really only testing the ATA implementation. Haven't yet gotten around to 6400/6360 playtime but I've assembled a BenchMac test rig for that and some other projects. Benchmarking a Trio/6400 vs a 6500 in TAM configuration would be one to see if much better disk performance trumps the clock bump.
  13. Trash80toHP_Mini

    Sonnet Crescendo L2 500MHz 1M

    They intended to support Trio in the 6400/6500, but the 50MHz Gazelle architecture boards proved to be unsupportable as a viable product. I've got a pic of the box (maybe even the box?) somewhere listing supported Macs. 6500 was a glaring omission. Could have been either the first printing if Trio hit the market before x500/TAM release or a later, third rev of the packaging? Dunno, I'll poke around. edit: there's a Trio discussion in the thread about identification of FW/USB cards compatible with TAM, they're scarce as hen's teeth.
  14. Trash80toHP_Mini

    A tale of 3 Tibooks...

    Never took it as such, nobody in their right mind eschewed X for doing serious graphics work in OS9, at least not in the last fifteen years or so. I'm not so serious. Not saying anything against the TiBooks other than that they weren't ttrue to Titanium as opposed to the salmony pale pink that TiNikons had the self assurance to flaunt. Ruggedness in pink vs. flimsiness in silver lipstick/toe polish. Ti harbingers of style over substance servings in years yet to come. Thinner is better, maybe it was on runways past, but no more. Rules were put in place for higher body fat content there as heroine chic butterflies pressed the limits of thinness at Apple. What-ever! Aluminum is better! With the onslaught of the G4, Pismo became a LowEndPowerBook and I found the LEM articles on their continued use interesting from a technical standpoint. By the time I got one they were obsolete, as was my brand spanking new DA by that day.