8mm Forum: ELMO GP Dual 8 Projector

»	8mm Forum » 8mm Forum » ELMO GP Dual 8 Projector

UBBFriend: Email this page to someone!

Author

Topic: ELMO GP Dual 8 Projector

Don Elsass
Junior
Posts: 12
From: New Bern, NC, USA
Registered: Jan 2015

posted September 30, 2015 08:31 AM

The projector is quiet when running in reverse, but very noisy and squeaky when running forward. Do the plastic gears need to be lubricated? If so, what should be used? Is there something else that could be causing the noise?

| IP: Logged

Steve Klare
Film Guy

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

posted September 30, 2015 10:45 AM

You could try this on your gears:

My Great Worm-Glop Weekend!

It may help, it can't hurt.

What kind of concerns me is that you have a squeak going forward but not in reverse. Bearings have a little bit of clearance in them, and this means that the sleeve and the shaft will contact each other in different spots depending on direction (and speed too) as friction causes the shaft to "walk" after it starts to rotate , so a bearing could actually be worn out in "Forward" yet still fine in "Reverse" since its spends hours in one direction and minutes in the other.

It's a good time to quiet the room and listen very carefully: figure out exactly where the sound is coming from.

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

| IP: Logged

Don Elsass
Junior
Posts: 12
From: New Bern, NC, USA
Registered: Jan 2015

posted September 30, 2015 06:24 PM

The culprit is the bearing for the wind-up reel. I gave it a shot of WD-40 and noise was reduced some what. Do you know if a replacement bearing available?

| IP: Logged

Steve Klare
Film Guy

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

posted September 30, 2015 07:01 PM

For better or worse this is a problem I've never had, so the honest answer is "I dunno!".

Here's a thought: WD-40 isn't really a lubricant, but rather a degreaser/cleaner. If you give it a couple of days to evaporate out, you could try again with a drop or two of 3 in 1 oil.

I guess the thing to do if the bearing really is shot is try to extract it, get some measurements (vernier caliper) and start poking around the 'net looking for replacements. (McMaster Carr?)

The nice thing about parts like bearings is manufacturers of all sorts of machines like to buy standard parts off the shelf: They are cheaper, more reliable and allow the companies to concentrate their Engineering time on their specialties and not have to deal with everything else.

-so there's a decent chance the bearing they used (or an equivalent) is still available. Not a certainty for sure, but a chance.

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

| IP: Logged

Andrew Woodcock
Film God

Posts: 7477
From: Manchester Uk
Registered: Aug 2012

posted September 30, 2015 07:30 PM

I can honestly say I've never come across a standard ball or Roller bearing on any projector that isn't very easily obtainable from any standard engineering merchant.

It really shouldn't be issue sorting this one.
SKF, FAG, NKE etc etc.

--------------------
"C'mon Baggy..Get with the beat"

| IP: Logged

All times are Central

Printer-friendly view of this topic

UBB.classic^TM 6.3.1.2