8mm Forum: TQ111 take up

This is topic TQ111 take up in forum 16mm Forum at 8mm Forum.

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Posted by Allan Broadfield (Member # 2298) on March 11, 2016, 02:13 AM:

Daft question. When rewinding on the BH TQ111 the take up arm is raised to the rewind position. Would it cause any damage to bypass this and run in that position all the time?

Posted by David Guest (Member # 2791) on March 11, 2016, 04:08 AM:

I have ran mine like for years

Posted by Allan Broadfield (Member # 2298) on March 11, 2016, 05:21 AM:

I had the rewind repaired a while back, but didn't think there was a connection to using in the 'up' position. Just wanted to be sure.
Thanks David.

Posted by Lindsay Morris (Member # 3812) on March 17, 2016, 05:28 AM:

The design of the takeup is such that as the takeup spool gets fuller & hence heavier MORE torque is applied to the reel to ensure that what is wound onto the takeup is on nice and snug.
That small cloth belt in the takeup drives the spool via a small hinged arm so that as the weight increases the torque applied increases.
When the takeup arm is raised the reel is free-er to turn during rewind so again the correct tension on the rewound spool is correct.
In the raised position the hinge & the cloth belt arrangement is almost negated so what could happen is that the tension on the takeup spool is less than optimum & what is wound on could be quite loose & thus subject to possible scratching.,

If it works OK and you are not scratching film then fine but it is NOT as the maker intended.
If you are using library type films that you return in the "Tail Out" mode as most libraries used to require (so they could check returned films), any loosely wound films would be scratched quite badly in transit with loose coils of film rubbing against each other.
IT certainly DID happen with library films as I often saw on stuff returned to the company I was agent for in this state in the past. Quite NEW 16mm prints almost ruined with nasty horizontal scratches...Film Guard often made them reasonable but still visible on screen.
If you care for film I would NOT run the machine like that. [Smile]

Posted by Allan Broadfield (Member # 2298) on March 17, 2016, 07:04 AM:

Thanks, that makes sense. Shall definitely think twice.

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