8mm Forum: Home Made long play unit

This is topic Home Made long play unit in forum 16mm Forum at 8mm Forum.

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Posted by Lars Pettersson (Member # 762) on March 09, 2009, 03:24 AM:

Hello out there

It just struck me that one should be able to construct a longplay unit this way: take a "parts"-16mm projector that you´re willing to trash, and take transformer, motor and both arms from this. Then construct a box in wich you mount this so that the arms will operate properly, with sufficient room for large reels -the way the Eiki longplay unit is set up. Lastly tweak the take-up and give resistances to work with large reels.

Would this work? What are the pitfalls? [Roll Eyes]

Cheers
Lars

Posted by John Whittle (Member # 22) on March 09, 2009, 02:11 PM:

Take a look at the Eiki Long Play tower. It was actually designed and originally built by Elf in the UK (they did a lot of incredible modifications to Eiki projectors including a dual band machine).

The Eiki tower uses one of the take-up torque motors from the 6000/6100 series Xenon projectors, but the design is really easy. Two reel shafts, a motor which you can adjust to take-up (an arm could sense torque and be connected to a variable resistor to change drive torque) and just high enough to clear the large reels.

Then all you need is a couple of idler rollers to go over the projector shafts for feed and take-up reels to guide the film.

John

Posted by Martin Jones (Member # 1163) on March 09, 2009, 02:35 PM:

Here......
http://www.acofs.org.au/part_4_files/Eiki/User%206000ft%20pedestal.PDF
Also, Google "eiki long play tower"
Martin

Posted by Michael O'Regan (Member # 938) on March 09, 2009, 03:25 PM:

Are these units hard to find?
Are they expensive?

-Mike

Posted by John Whittle (Member # 22) on March 09, 2009, 03:49 PM:

They show up in the US from time to time for about $500-600. They were mainly sold with the EX-4000 so it would have the same running time as the EX-6000/6100. Of course US models are 110 volt machines.

John

Posted by Claus Harding (Member # 702) on March 09, 2009, 09:18 PM:

I have one, and I can vouch for its quality; it works very well and is quite gentle on film.

Claus.

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