I have noticed when using a 2000 take up spool for certain films that from halway onward the take up tension appeara poor and the film really sags, by the finish of the film it can be a good inch or more hanging below the reel. Not good.
I have xhecked everything but cant find a fault. If i use 1600 reels it seems fine. The 2000ft spool i use is a tuscan with a decent size core. Any ideas please?
Thank you.

Tom , the take up cork liner might be the problem being too dry and hardend up over age ? I had this problem with large reels and managed to soften up the cork to grip better ?

Thanks Paul i will look at this.

this is all ok by the looks of it, well lubricted to allow the rear take up to move freely. can this be over greased?

tom, does your film have any warp, try laying a good 6ft of film on a flat surface. does it lay completely flat?

i will check them Clyde, i think they are ok though as i check them on rewind arms before first viewings. i will try and put up a few images over the next day or two to sow the extent of the sag.

which part is "well lubricated" Tom?

The service manual lists seven answers to poor/no take-up. The most possible one listed in this case is "Excessive grease on take-up pulley". The film could be warped but if it takes up OK on the 1600 it seems unlikely, unless the 1600 is a heavy metal one such as a Cecol.

The cork linning.i know when these dry out it causes a take up tension problem. I have cleaned the belt and its pulleys and re greased the cork linning

The cork linning.i know when these dry out it causes a take up tension problem. I have cleaned the belt and its pulleys and re greased the cork linning