8mm Forum: Flutter on B & H 1735

»	8mm Forum » 8mm Forum » Flutter on B & H 1735

UBBFriend: Email this page to someone!

Author

Topic: Flutter on B & H 1735

Simon McConway
Phenomenal Film Handler

Posts: 1085
From: Doncaster, UK
Registered: Jun 2004

posted August 30, 2013 03:18 AM

This machine works well with a good steady picture but flutter on the sound. I have cleaned the sound rollers and checked the flywheel is free to turn, which it is. Any advice?

| IP: Logged

Maurice Leakey
Film God

Posts: 5895
From: Bristol. United Kingdom
Registered: Oct 2007

posted August 30, 2013 06:11 AM

Are all loops OK, and what about tension at the sound head? Does the head have moveable pads to keep the film in contact?
Why not apply a gentle pressure to the film on the sound head to see if it is an improvement. Repeat. Gentle pressure.

--------------------
Maurice

| IP: Logged

Simon McConway
Phenomenal Film Handler

Posts: 1085
From: Doncaster, UK
Registered: Jun 2004

posted August 31, 2013 04:29 PM

Thank you Maurice. Strangely, on some films the sound is perfect. But on others, the flutter is present. Gently pressure on those rollers doesn't seem to do anything.

| IP: Logged

Maurice Leakey
Film God

Posts: 5895
From: Bristol. United Kingdom
Registered: Oct 2007

posted September 01, 2013 02:59 AM

Simon
I had the same problem with a brand new Eumig 807D way back in the mid seventies. Some Super 8 prints were fine, but some had a small degree of sound flutter. I never did cure the problem although I spent a great deal of time playing about with the head tensions and its position.
I eventually replaced it with a new Bell & Howell DCR which never gave any trouble.
I kept the Eumig for showing my family standard 8 films.

--------------------
Maurice

| IP: Logged

Jim Schrader
Phenomenal Film Handler

Posts: 1628
From: Savage, MN, USA
Registered: Jun 2003

posted September 01, 2013 12:34 PM

the bottom loop gave me trouble on mine had it tuned up and adjusted and works fine now.

--------------------
jim schrader
"Let's see “do I have that title already?"

| IP: Logged

Simon McConway
Phenomenal Film Handler

Posts: 1085
From: Doncaster, UK
Registered: Jun 2004

posted September 01, 2013 01:15 PM

How do you adjust that? I've ordered the service manual from Oldtimer Cameras.

| IP: Logged

Jim Schrader
Phenomenal Film Handler

Posts: 1628
From: Savage, MN, USA
Registered: Jun 2003

posted September 01, 2013 05:06 PM

I took mine to a friend that does that, sorry i could of not been more help.

--------------------
jim schrader
"Let's see “do I have that title already?"

| IP: Logged

Steve Klare
Film Guy

Posts: 7016
From: Long Island, NY, USA
Registered: Jun 2003

posted September 01, 2013 05:29 PM

Sounds like a classic case of the chatters! It's kind of Super-8's genetic weakness and it's always lingering just below the surface.

I guess when Kodak laid out the specs for the entire Super-8 system, they anticipated people shooting sound movies with cartridge film, and editing them at home. R8 Sound's 54 frame separation between film and image meant a loop of film about 8 inches long would need to be allowed between the gate and the recording head, which is a lot to accommodate in a cartridge. Plus if you cut and spliced a scene, you'd have a 3 second mismatch between image and sound at 18 FPS, which would be awkward on screen.

So they cut it back to 18 frames of separation, which helps with the two other problems but isn't quite enough to smooth out the speed of the film between the intermittent motion at the gate and the smooth one at the sound head.

The best luck I've ever had dealing with it came by accident one time when I got a complete mint set of guides for one of my machines, but that isn't going to happen very often these days.

--------------------
All I ask is a wide screen and a projector to light her by...

| IP: Logged

All times are Central

Printer-friendly view of this topic

UBB.classic^TM 6.3.1.2