Have used older 2 post racks for years. Have 10 in service and like them. The older ones had been available cheap and are very sturdy/heavy. Like Perry I have done the wood base. Longer out the back then the depth of equipment for stability. If you do find older 2 post racks there are 2 types. The EIA screw thread and telco thread. Enjoy. Paul WB8TSL
On Tue, Jun 11, 2019 at 9:00 AM John Ackermann. N8UR <j...@febo.com> wrote: > Star Case (https:www.starcase.com) is U.S. company (in Indiana) that > sells similar open-frame rack kits for very reasonable prices. I have > several and have been very pleased. They are available whatever height you > want, with depths of 20 to 30 inches. They have lots of accessories to > trick out your rack. > > As Perry ssid, they are quite wobbly but they have various cross braces > available that will stiffen them up. I have hundreds of pounds in a 6 foot > one and it's rock-stable. > > They ship broken down in a flat box plus tall cardboard tube for the > vertical. Assembly is bssically like an Erector Set. > > On Jun 11, 2019, 7:00 AM, at 7:00 AM, Perry Sandeen via time-nuts < > time-nuts@lists.febo.com> wrote: > >Yo Bubba Dudes!, > >Needing to go vertical with my test equipment I went bottom feeding for > >an equipment cabinet on ebay. > >To make a long search story short: they were way too expensive, too > >heavy to ship and too far away for pickup. > >So I kept searching and finally came across what was listed as *42U > >Four Post Open Frame Server Data Rack 19 inches. Adjustable depth 23 > >to 32 inches.ebay number 152319524877.Sold by Raising Electronics for > >US $188 and free shipping. > >I was unsure what a *U* height meant put it seemed tall enough so I > >bought one. > >I was a little apprehensive about this being a Chinese metal product. > >I was very pleasantly proven very wrong. > >Although it only comes with a picture of an assembled unit it has been > >engine ed so there is no way you can assemble improperly. The four > >posts are all equal and can be installed with any end up or down and > >the top and bottom brackets will fit. It comes with the exact 50 M6-20 > >head bolts and nuts needed for assembly. The nearest SAE equivalent > >bolt size is 1/4 20 x 1/2L which I purchased to hold L shelf brackets > >to the frame. > >I set the depth of mine to 26 inches so my 5370's fit well and I had > >space for both power and BNC cables to be inside the frame. > > > >This rack is designed to be bolted to the floor. Wanting to be able to > >move it, I cut a piece of 3/4 inch plywood a little longer and wider > >then the base footprint and installed 4 inch tall Harbor Freight swivel > >casters on the four corners for ease of movement in any direction, even > >on floor carpeting. After assembly it was 6 ft 9 inches tall. > > > >Now this being a bolted together *skeleton frame* it is prone to > >twisting and or becoming a parallelogram sideways. To prevent > >twisting, I fitted a plywood board on the top bolted to the top front > >and rear angle pieces. To prevent a side-to-side movement required an > >8 inch wide piece of scrap aluminum plate bolted to the rear vertical > >posts. This is easy to do as there are a plethora of precision spaced > >holes available. > >There was some very serious thought given to the vertical post design. > >It has six 90 degree folds done in such a way that the inner edge on > >each outer side gives a 19 inch opening. > > However behind it is as inner fold where one can install recessed L > >shaped brackets. Now the inner fold is about and inch narrower than the > >outside edge.This allows making a wider shelf that can *float* on top > >the brackets but can't slide out either end. > >This was very useful when configuring the instrument arrangement. > >I also found that with the bottom shelf being just 6 inches above the > >floor I was able to install more equipment in the same vertical space > >than in my previous normal sized equipment cabinet. > >Another bonus with this type of configuration is that it's easier to > >keep the equipment cool and it's much lighter. > >Regards, > >Perrier > > > > > > > > > >_______________________________________________ > >time-nuts mailing list -- time-nuts@lists.febo.com > >To unsubscribe, go to > >http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > >and follow the instructions there. > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.