banner
Tape navigation: Home | Tips & Notes | History | Formats & Resources | Projects | Facility | Site Map | Contact

Speed variation with unmatched reels

Filed under: archival practices,reels — 2012-09-20 by Richard L. Hess — Last Edit 2012-09-20 by Richard L. Hess

I received an interesting question from a European tape user with whom I frequently correspond:

“Is there any speed variation when playing a tape with different hubs on the supply reel and take-up reel?”

And I replied:

You raise an interesting question. The easiest answer to this is simple:
There is a risk of speed variations throughout the reel if the tape tension varies throughout the reel.
followed by the corollary:
This effect is made worse if the condition of the capstan / pinch-roller system is degraded.
and
Some capstan / pinch-roller / constant-torque systems handle this better than others.

(more…)



Tape navigation: Home | Tips & Notes | History | Formats & Resources | Projects | Facility | Site Map | Contact

©2006–2007 Richard L. Hess — Aurora, Ontario, Canada      Contact Richard