Many USA tapes in the later 70's and 1980's are known to have had batches of SSS ( Sticky Shed Syndrome ). Debate continues as to whether this was due to environmental restrictions on Whale Oil, or other binder problems. Since its quite rare to find Japanese tapes that have the problem ( some Sony products being the exception ) since the Japanese kept Whaling despite resitrictions, I have to believe that since I've never seen a TDK or Maxell reel with that problem, I vote for the Whale Oil as the source of the problem.
Next Ampex / Quantegy type 456 is always a 1.5 mil backing in 1200' on 7" reel, or 2500' on a 10.5" reel, not 3600' ( 3600' would be a 1 mil backing or type 457 ). I myself picked up a case of 12 Scotch 207 tape pancakes recently, about 20 years old, and have been putting it on empty reels too. But, some metal reels have 3 screws, some have 4, even more, while
tape pancakes come on standard three screw hubs. So watch what reels you buy, the fancy TDK's ( LX and GX ) metal reeks as I recall have 4 screws, and will be incompatible with standard hubs. Maxell metal reels, and most standard blank metal reels I think always have 3 screws.
Steven L. Bender, Designer of Vintage Audio Equipment
I'm having great results with Quantegy 456 and GP9...I've got a few Maxell's that I've picked up on e-bay for poor source material. What I'm having trouble obtaining readily is 10 1/2" reels with 1/4" 3600' lengths of 456. I've been getting pancakes of Quantegy 457 and "rolling my own", but need to find a relatively inexpensive source of 10 1/2" metal reels for the pancakes. Anyone have a good source?
Heidana