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Got this Elmo 16CL on ...bay and it was in a pretty sad shape. All pulley rubber became gooey including the takeup reel pulley. The mechanics works ok and no sound. So, here wanted to describe how I fixed the sound.
The first thing was to do the internet search and came across this post.
https://8mmforum.film-tech.com/cgi-b...c;f=5;t=000779
Lots of good stuff there.
Also
https://www.youtube.com/watch?v=JBgn_0ZEGdk&t=219s
But first I wanted to fix the pulleys.
Kim suggested this source
https://www.urbanskifilm.com/elmo.html
But that was quite a bit of money so did some more snooping around and found this site
https://sayyes2analog.wordpress.com/...ubber-rollers/
This gave me the idea on pulley dims, so went ahead and got some neoprene tubing and replaced all pulleys except the takeup.
That seem to do a good job but still no sound.
Following the advice from Janice and others spent several hours studying the sound components and decide to pull out the whole buzz track.
Also checked the service manual.
The buzz track is held in place by 1 screw that has to be accessed from the back but requires the flywheel to be removed first.
Then remove the adjusting nut.
Then wiggle the unit out being careful not to damage any wiring. Also check from the back for any binding wires.
I found the following issues.
- the small glass at the top of the lens housing needed good cleaning.
- the photosensor (solar unit hehe) is held only with 1 screw and a small tab was bent. Had to carefully bend it back and reinstall it. Use small eyeglasses repair screwdriver if needed,
Had to clean the slider post, that is the post held by lock screw. The lock screw is there to lock the unit in position after tuning. Loosen the lock screw and push the post out. You may need to wiggle it in the out to release it. The clean the post and the hole with alcohol. Don't t think you need and lubricatiion there.
Put everything back and leave adjusting nut attached by only a few threads so that the unit is all the way out.
After doing all of this I got the sound. Was distorted and weak but then it got better as I turned the adjusting nut in. A finally was able to get the good and clean sound after a few turns.
Use music to adjust and turn the adjusting nut in and out cleanest sound.
Still have a few issues.
- Takeup has too much force
- Periodic popping sound in the speaker. Possibly bad rectifiers or bad headset jack contacts
Once this is fixed plan to add the led light and the RPI for real time capture with 3 blades. Tested that already and that work very good.
The first thing was to do the internet search and came across this post.
https://8mmforum.film-tech.com/cgi-b...c;f=5;t=000779
Lots of good stuff there.
Also
https://www.youtube.com/watch?v=JBgn_0ZEGdk&t=219s
But first I wanted to fix the pulleys.
Kim suggested this source
https://www.urbanskifilm.com/elmo.html
But that was quite a bit of money so did some more snooping around and found this site
https://sayyes2analog.wordpress.com/...ubber-rollers/
This gave me the idea on pulley dims, so went ahead and got some neoprene tubing and replaced all pulleys except the takeup.
That seem to do a good job but still no sound.
Following the advice from Janice and others spent several hours studying the sound components and decide to pull out the whole buzz track.
Also checked the service manual.
The buzz track is held in place by 1 screw that has to be accessed from the back but requires the flywheel to be removed first.
Then remove the adjusting nut.
Then wiggle the unit out being careful not to damage any wiring. Also check from the back for any binding wires.
I found the following issues.
- the small glass at the top of the lens housing needed good cleaning.
- the photosensor (solar unit hehe) is held only with 1 screw and a small tab was bent. Had to carefully bend it back and reinstall it. Use small eyeglasses repair screwdriver if needed,
Had to clean the slider post, that is the post held by lock screw. The lock screw is there to lock the unit in position after tuning. Loosen the lock screw and push the post out. You may need to wiggle it in the out to release it. The clean the post and the hole with alcohol. Don't t think you need and lubricatiion there.
Put everything back and leave adjusting nut attached by only a few threads so that the unit is all the way out.
After doing all of this I got the sound. Was distorted and weak but then it got better as I turned the adjusting nut in. A finally was able to get the good and clean sound after a few turns.
Use music to adjust and turn the adjusting nut in and out cleanest sound.
Still have a few issues.
- Takeup has too much force
- Periodic popping sound in the speaker. Possibly bad rectifiers or bad headset jack contacts
Once this is fixed plan to add the led light and the RPI for real time capture with 3 blades. Tested that already and that work very good.
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