Oh my. That's unfortunate. There were a number of flavors of these Durst enlargers, and I haven't personally seen all of them. But as long as the focus rack motor is functional, it should do the trick fine. Of course, you could alter the design by using a Greenlee punch and try to find a shaft extension. A knob would be easy to acquire. But that would be a bunch of fuss which hopefully is not necessary.
The focus on the Durst L1840 bellows is electronically controlled with a PWM system that ensures the upward focus and downward focus will be the same speed. There are 10 or so pages about the operation of the system in the big L1840 thread. If you need manual focus, replacing the L1840 assembly with that of a L184 would be your only option. I'd keep the electronic focus unless you have very long arms or you don't do big enlargements.
I'd be interested in seeing that. Durst USA reverse engineered the EST1000 power supply (photos on apug) but they did not do the same for the ECU1000 (which has the focus motor controller). He was just re-building the ECU1000 supplies (as I had done to both of mine).I found the power supply and up-down buttons.
I'd be interested to see you motor controller. Do you have a schematic for it?
Here are pics of the power supply for the motorized focus. It appears to be separate from any other electronics.
Originally Posted by ic-racer
How much is AN glass for the Laraneg carrier? I definitely need some kind of glass because: 1) there is none; and 2) I can't figure out how to hold the negative in the negative carrier. I've heard reference to glassless carriers, but this is not one, is it? What are the little lever-slides on the inside of the carrier insert? Are they supposed to hold the glass or the negative (or both)?
Hmmm, that is an interesting base; the base arms are parallel. Mine is not like that, as the base arms form a "V" in the middle. Maybe a L1840 on an L184 chassis as ic-racer suggested? I had assumed they were the same thing.
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