Durst L1840 Parts Needed

[mikestr]

Hi all,

I am looking for a few parts missing from my recently acquired Durst L1840/CLS1840. They are

1. Front door and light trap for the Laraneg

2. Handle for turning neutral density wheel

3. Plastic transfer gears (2) for filter wheel

If anyone has spares they can part with please let me know. Cash/trade/barter, whatever.

Thanks,

Mike

[cyrus]

Hi Mike
Sadly I don't have your spare parts but since I have the same enlarger head, I was curious where you got the blow-up diagrams from?

Thanks

[mikestr]

These came from Durst-Pro's free manuals page. The first image is from the Laraneg brochure and the other from the spare parts catalog.


Hi Mike
Sadly I don't have your spare parts but since I have the same enlarger head, I was curious where you got the blow-up diagrams from?

Thanks

[ic-racer]

I may have a locking knob for the floor/track wheels.

Did you see the Miter Gears on the McMaster site: http://www.mcmaster.com/#standard-gears/=h1ec10

Also, I have seen automotive shift knobs that look similar to the large control knobs on the head:
71707
71708
71709

[mikestr]

Those knobs look nice, though I still have the originals, fortunately. I could use a caster lock knob as I have only two. As for the miter gears, they must have the same dimensions as the original, because the shafts are locked in position and an variance in dimensions will cause them to bind or not mesh properly.

[mikestr]

OK, guys, I just got the bad news: Durst Pro cannot provide any Laraneg parts. So, now I must add to my original SOS: If anyone has a complete Laraneg assembly for sale please contact me.

Thanks,

Mike

[mikestr]

It appears that Jay Overmoen has the Laraneg and can sell it to me. Earlier I received the other small parts I needed from Gary Mulder when I dropped in on him at his home in the Netherlands. So it looks like I'm set.

[ic-racer]

Good to see you got the parts!

[LFPete]

Hi Gang, I am a new owner of a Durst 184 with CLS1840. Trying to put it all together, I think I'm missing parts. This site has been helpful, you may hear from me again ;)

As for the negative carrier, I seem to have the Laraneg housing but am missing some insert parts, like the frames and glass that holds the negative!

Can you post pics of your complete setup?

This is my collection of seemingly random negative carrier parts.

Thanks, Peter

PS My enlarger does NOT have a manual focus, only a motorized focus - anyone have experience with this variation?

[Drew Wiley]

Motorized focus is easy - you just momentarily toggle the switch one way or the other; it can handle very minor adjustments. But you can still do it manually; it just takes a little more hand strength to twist than a non-motorized focus track. It's important to keep those tracks lubricated. With old enlargers I recommend cleaning off any old sticky gritty lube first, then applying fresh lube. That will make focus easy and eliminate the risk of excess wear on the drive gears.

[LFPete]

Thanks for the info... Sure, makes sense, but there is no manual focus knob! I have nothing to turn! Might not be an issue if my electrics work - I currently (HA!) don't have access to a 240V outlet. On that note, seems my 240V plug (??) is a standard 2-pin + ground commonly seen everywhere in No. Am. Did they supply it with that plug style or another special 240V style??

[Bob Salomon]

Thanks for the info... Sure, makes sense, but there is no manual focus knob! I have nothing to turn! Might not be an issue if my electrics work - I currently (HA!) don't have access to a 240V outlet. On that note, seems my 240V plug (??) is a standard 2-pin + ground commonly seen everywhere in No. Am. Did they supply it with that plug style or another special 240V style??

If it is 240 volt it would not be factory supplied with a 110V plug. Could your power supply be multi voltage?

[Drew Wiley]

If it was officially equipped to be exported to the US, it is very likely the focus and head-elevation motors are 115V, and can, if necessary, be operated completely independently of a 240V power supply, if that is even the case in your instance. One can simply remove the cover to the motor and check the label if it isn't legible on the outside of the housing.

[LFPete]

Hmmm... I'll have to look more closely at the power supply. I'll post pics - thanks!

I have a motorized focus w/o any manual focus knob, and a manual-crank head elevation wheel.

As far as I know my 184 was used in a pro-lab near Boston.

[Drew Wiley]

You should have a manual knob for bellows focus directly opposite to where the motor gear engages, not at the same position. Look around.

[LFPete]

Thanks, I've looked - no manual focus - it's an odd one!

It also has two switch-feet on the bottom of the adjustable focus frame. They are wired back into the motor. I think they are some kind of safety auto-stop. I found the power supply and up-down buttons. Will double check voltage requirements and give it a try. Worst case 120V won't kill a 240V circuit => fingers crossed.

The knobs in the pics rotate the head, they do not adjust focus.

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[Drew Wiley]

Yes, there would be a built-in auto stop. But what you need to take a picture of and post is the whole device area retaining the bottom of the bellows and lensboard. It's there, attached to a horizontal shaft, that the manual focus knob should hypothetically be.

[ic-racer]

Looks like you have a hybrid enlarger. Some Durst literature calls that part the 'camera' (not the 'cairrage' or 'head') and it is from a L1840. Looks like they grafted that onto a L184 chassis and put a sticker on it. I know that in the 1980s and 1990s the US Durst Importer (Colenta) would do some modifications to suit US customer's needs. My enlarger was modified by Colenta for graphic arts work upon arrival in the US.

Also, your Laraneg looks complete all you need is the glass. I'm actually getting dimensions ready to place an order for spare Laraneg glass from this place below. I have hesitated, because enough 10x10 glass for both my carriers will cost more than I paid for the enlarger. But it will be worth it in the long run as AN glass seems to be getting harder to source.


As for enlargers, we can supply direct replacement pieces for DeVere, Durst, Saltzman, Omega, Beseler, Zone VI, and others. Please just let us know.http://scan-tech.net/

[ic-racer]

I found the power supply and up-down buttons. Will double check voltage requirements and give it a try.

I'd be interested in seeing that. The usual L1840 focus motor is driven from electronics in the ECU1000 that sits between the legs of the L1840.

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[LFPete]

Thanks Drew, there is a horizontal shaft inside the housing that engages the two geared vertical lifting posts. The focus motor is inside at an angle and engages the geared horizontal shaft. The side housing covers do not have holes where one might expect a manual focus knob.

The knob in the top of the photo rotates the head. You can see there is no hole in the housing to accept a manual focus knob (i.e. I know one isn't missing, it was created like this).

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Yes, there would be a built-in auto stop. But what you need to take a picture of and post is the whole device area retaining the bottom of the bellows and lensboard. It's there, attached to a horizontal shaft, that the manual focus knob should hypothetically be.

[Drew Wiley]

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.

[ic-racer]

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 found the power supply and up-down buttons.

I'd be interested in seeing that. Durst USA reverse engineered the EST1000 power supply (photos on apug (https://www.photrio.com/forum/threads/durst-est-1500-n-power-supply-by-durst-pro-usa.167502/#post-2180619)) 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'd be interested to see you motor controller. Do you have a schematic for it?

[LFPete]

Here are pics of the power supply for the motorized focus. It appears to be separate from any other electronics.

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I'd be interested in seeing that. The usual L1840 focus motor is driven from electronics in the ECU1000 that sits between the legs of the L1840.

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[LFPete]

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)?

[LFPete]

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.