Different type of Minox 8x11 film has different thickness, the thinner the film, more exposures can be packed in one cassette. The following is a table for maximum capacity of Minox (or Acmel ) plastic cassette, with 10mm spool.
MINOX CASSETTE MAXIMUM CAPACITY
Film Plastic Minox/ACMEL cassette, 10mm spool Brass Minox Cassette
Agfa APX 25/100/400
Minopan 25/100/400 52 65
Agfa Copex Rapid 58 72
Minocolor 100 52 65
Ilford PanF Plus 55 70
Kodak Technical Pan 64 80
Fuji Super HR 115 140
Don't pack Minox cassette to maximum capacity, unless you can attach film lead to the spool very tight; otherwise, uneven tape may add to the diameter of spool, you may not get the maximum, and jam the camera. It is wise to leave some leeway.
Remember frames beyond 50 for Minox A/B , and frames beyond 36 for Minox C/LX/TLX/CLX/EC will have wider than normal spacing.
Thin film may have little frame spacing at the beginning.
Don't use too thick film in Minox cassette.