Minolta color enlarger bellow wheel not staying steady

[unwantedfocus]

Hello, recently my enlarger started to act up.

When I'm trying to focus, the bellows do not stay in place. Here is a video of the problem to get you more of an idea. Does anybody know where the problem is? I don't want to randomly start turning screws so I rather ask first.




thanks.

 

[AgX]

At such focus drives there are 2 places of friction braking:
-) between the wheel and the bolt or the between the bolt and the casing
-) between the casing and the wheel or its axle

If a rubber wheel is used then my first thought would be the wheel having hardened over time and become slippery.

But in your case the wheel looks like being from brass. I would have to look more closely or to even dismantle the drive to find out. The best I can say now, is to check those two screws at the brass sheet/spring.

 

[unwantedfocus]

You are correct the brass plate pressures the wheel onto the rail, the bottom two screws are already tight. On the the top I used a piece of paper and stuffed it in there now it works again and the wheel has friction. Thanks much appreciated.

 

[AgX]

Instead, you might take out the brass spring and bend it stronger. But there are several ways to approach this.

 

[unwantedfocus]

Instead, you might take out the brass spring and bend it stronger. But there are several ways to approach this.

That did the Trick. Thank you!!!

 

[AgX]

My pleasure


And now we all know where your name comes from...

 

[ic-racer]

What enlarger is it?
Friction drive focus is pretty nice, I have 4 enlargers with that system.
I'd clean everything first. looks like there is dirt in channel and maybe on the wheel too.

 

[unwantedfocus]

And now we all know where your name comes from...

Haha yeah the name came from something like that nature

What enlarger is it?

It's a Minolta Color Enlarger 2, the friction works now, i have to deep clean it, im not decided yet how, suggestions are welcome.