I recently bought 17 classic DCC cassettes here in the Netherlands (basically classic “leftovers”) from a DCC Engineer (via his daughter). The museum also bought a number of cassettes from them as i understood. They also told me that they will share an “ancient” video (not revealing the topic) with the museum, so hopefully this is great material that can be used in one of your educative Dr DCC YouTube Videos !
Four of those 17 cassettes are not owned, unknown or not (yet) listed under All DCC Cassette titles or maybe I didn’t look properly and missed them. So if my “research” is correct, I know that you would like to add them to the DCC Museum collection. Unfortunately I have no doubles and therefore keep them in my personal collection (sorry). So the minimal I could do to contribute is let you all know in order to complete the list of All DCC titles that where ever released.
Please see added pictures and more title details in listing below:
Dvorak - Symphony No. 8 “The Noon With” Wiener Philhamoniker Seiji Ozawa - 434 990-5
I remember two of those in my own collection. Maybe Ralf can tell if the DCC museum owns them already. I’ll be glad to donate them from my collection to the museum.
Thanks for your response!! A very nice gesture to donate from your own collection in case my research was thorough enough and the museum doesn’t have them in their collection. I am (still) to emotional attached to all individual collected titles over the years. I don’t care if they are expensive, cheap, unique, rare, common, etc. as to me all casings are pure art in my eyes. I therefore consider them all as my digital gems and therefore not ready yet to donate unique collection titles. Sorry again . My plan is to build a dcc “wall” someday to expose/show all my cassettes. Okay enough of that emotional chit chat .
So i hope this post still contributes to complete all dcc titles that have been released or used as demo/test cassettes. In case you or museum needs more details on these cassettes please let me know.
Parallel to this i had to restore both my dcc 951 and 730 as the silicone gear came lose again. This happens over time especially during rewinding these 17 cassettes to their beginning (due to turbo speed??).
Regarding the original gear, it’s a known fact that plastic contains plasticizers that evaporate over time, weakening the gears, leading to breakage. Can’t do anything about that.
The molded silicone gears have a different chemical composition and structure. They are based on a silicon-oxygen backbone (Si-O), rather than a carbon-based chain like most plastics.
When using 3D printing for gears, one should not use PLA (Polylactic Acid). While PLA is easy to print, rigid, and environmentally friendly, it’s brittle and wears quickly under mechanical stress.
Most consumer-grade 3D printers use FDM (Fused Deposition Modeling) technology, which works with thermoplastics. Silicones are not thermoplastics and cannot be extruded in this way.
It is possible using specialized liquid silicone rubber (LSR) printers. These are rare, expensive, but are not designed for producing mechanically demanding parts like gears.
Thought someone would like to know this when thinking about 3D printing of gears
No worries , i know about the crack in the original plastic gear which needs to be replaced by the silicon version. I did many repairs of portable and regular dcc players, I dare to say that thanks to the museum youtube videos i learned my lessons . The only thing is that over time (eg a year) the red silicon gear comes lose from the motor (metal pin) and needs to be fixed/glued/tighten again. Furthermore i know that the quality of those silicon gears differs. But the gears of both players are still intact and function well after they are fixed to motor again. My first silicon gear hardend out over time (see other topic) and got damaged due to high (te)winding speeds. Since then i always test with a standard dcc tape.
So over time before I insert a (new) prerecorded tape I always check with a regular dcc cassette the winding/rewinding. If it stops immediately or side keeps flipping from a to b, playing issue and/or eats tae, to me that is an indicator that gear slips from the motor pin again.
Thanks for your reply… Great to hear that this topic contributed in trying to complete the list of DCC titles ever released and owned! If i come across a double i will let you know.
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and therefore keep them in my personal collection (sorry). So the minimal I could do to contribute is let you all know in order to complete the list of All DCC titles that where ever released.
and therefore not ready yet to donate unique collection titles. Sorry again 
. My plan is to build a dcc “wall” someday to expose/show all my cassettes. Okay enough of that emotional chit chat 
.
, i know about the crack in the original plastic gear which needs to be replaced by the silicon version. I did many repairs of portable and regular dcc players, I dare to say that thanks to the museum youtube videos i learned my lessons