I haven’t seen anywhere proper pictures of 7-inch (178mm) reel of 1⁄4-inch-wide (6.4 mm) recording tape Pioneer PR-85 taken apart.
There has been mad so many of them, they have been made from 1977 – 1982
It is made from of:
– 2 alu reels
– 2 numberings
– plastic middle piece
– 3 screws and 3 nuts
What surprise me, that numbering isn’t fixed, but is printed on extra piece of aluminium so it’s very versatile. Sides are marked 1 or 2. They are very nice looking an very light. Easy to bend but also bend back in case if they are.
In use, the supply reel or feed reel containing the tape is mounted on a spindle; the end of the tape is manually pulled out of the reel, threaded through mechanical guides and a tape head assembly, and attached by friction to the hub of a second, initially empty takeup reel. The arrangement is similar to that used for motion picture film.