sweetbeats
Reel deep thoughts...
I picked up a CS-607 rack on eBay awhile back for a good deal...the downside is that it was missing the locking pins and casters, but everything else was there and in good condition, including the original owner's manual! 
The seller packed it very well...disassembled everything and heavily wrapped each part in bubble-wrap.
The CS-607 uses the same casters as the trolley for my RC-51 remote...two of the wheels lock, but fortunately my floor is horizontal
, and I had access to a set of 4 non-locking casters that look nearly identical to the Tascam parts, so I put those on the RC-51 Trolley as it is relatively light compared to a deck in the CS-607...not really worried about it going anywhere. I put the ones from the Trolley on the CS-607 rack.
Problem #1 solved.
Here is a pic of the locking pin assemblies that are missing from my unit:
And here is a shot of the vacant holes for the locking pins:
After much contemplation and wandering in the hardware store I came upon a solution out of off-the-shelf parts with a minimum of machining required. Here are the parts:
The stainless bolt on the far left is the only part that required modding...I had a firend of mine who is a very talented machinist bore the 1/4" holes in them for the pins themselves. I no longer have easy access to machining equipment, and nothing like what he uses and plus I hate working with stainless.
He's so good...I requested a 0.250" bore and he made a judgement call and put them out to 0.2502" 
and they are a perfect fit for the pins.
Here is a complete assembly:
I first had to increase the diameter of the mounting holes by about 0.015"...I debated on doing that because I didn't want to modify any part of the rack itself, but since the pin assemblies are no longer available and my chances are really slim of finding a lone set, I decided to do it. Once that was done then I could mount the machined bolt to the upright:
Here's what the rest of the parts look like when mounted:
And here is the final assembly:
I'm really pleased with the result. They work great...popping right in and locking when they should...very positive action, and they hold the rack frame very rigidly.
The only downside to my design is that, unlike the stock assemblies, the pins don't lock open (allowing the operator to have one hand holding the rack frame while the other retracts and locks the pins in the retracted position). I kind of need three hands to do it. I'll see how much of a hassle this is and then modify the design if necessary.
The CS-607 rack, though it only has 3U down below, is impressively built and designed...much more sturdy than the cheapy rack I bought for $100 in which the 58 presently sits. It does the job, but it is unsteady (everything is much thinner guage steel), and overall poor fit and finish. PITA square rack nuts too instead of threaded rack rail.
The seller packed it very well...disassembled everything and heavily wrapped each part in bubble-wrap.
The CS-607 uses the same casters as the trolley for my RC-51 remote...two of the wheels lock, but fortunately my floor is horizontal
, and I had access to a set of 4 non-locking casters that look nearly identical to the Tascam parts, so I put those on the RC-51 Trolley as it is relatively light compared to a deck in the CS-607...not really worried about it going anywhere. I put the ones from the Trolley on the CS-607 rack.Problem #1 solved.
Here is a pic of the locking pin assemblies that are missing from my unit:
And here is a shot of the vacant holes for the locking pins:
After much contemplation and wandering in the hardware store I came upon a solution out of off-the-shelf parts with a minimum of machining required. Here are the parts:
The stainless bolt on the far left is the only part that required modding...I had a firend of mine who is a very talented machinist bore the 1/4" holes in them for the pins themselves. I no longer have easy access to machining equipment, and nothing like what he uses and plus I hate working with stainless.
He's so good...I requested a 0.250" bore and he made a judgement call and put them out to 0.2502" and they are a perfect fit for the pins.Here is a complete assembly:
I first had to increase the diameter of the mounting holes by about 0.015"...I debated on doing that because I didn't want to modify any part of the rack itself, but since the pin assemblies are no longer available and my chances are really slim of finding a lone set, I decided to do it. Once that was done then I could mount the machined bolt to the upright:
Here's what the rest of the parts look like when mounted:
And here is the final assembly:
I'm really pleased with the result. They work great...popping right in and locking when they should...very positive action, and they hold the rack frame very rigidly.
The only downside to my design is that, unlike the stock assemblies, the pins don't lock open (allowing the operator to have one hand holding the rack frame while the other retracts and locks the pins in the retracted position). I kind of need three hands to do it. I'll see how much of a hassle this is and then modify the design if necessary.
The CS-607 rack, though it only has 3U down below, is impressively built and designed...much more sturdy than the cheapy rack I bought for $100 in which the 58 presently sits. It does the job, but it is unsteady (everything is much thinner guage steel), and overall poor fit and finish. PITA square rack nuts too instead of threaded rack rail.
and retro-fitted a WAKA 12-pin connector you're still going to be limited to the functionality of the basic RC-71/RC-90 remote (basic transport functions). Why go to the $200+/- expense of an RC-51 (if you can even find one) only to butcher it and then have most of it non-functional anyway?