Durst L1840 Enlarger 8x10 10x10--Everything you wanted to know...

[Ginette]

Here the vintage Instructions for the LAMOT.
Also a close shot of the pin, with the round shaft, it didn't fit at all.
And the original fuse (this one still working) it is the car fuse that blown.

[George W.]

Bonsoir, la réponse est simple, mais trop compliquée pour poster sur ce forum…. :-) :-) :-)


JUST CALL ME ON 00352-621-554.253 OR EMAIL AT GWAGENER AT PT.LU


"George W."
Dipl.Ing. EPFZ, MBA
LX1GW

[Luis-F-S]

So does anyone have the Hemot instructions? I suspect it's similar to the Lamot!

[Ginette]

So does anyone have the Hemot instructions? I suspect it's similar to the Lamot!

Probably similar, I post the LAMOT instructions pdf 2 posts below.
Yesterday I tried the arm and arm look too short to enter correctly into the Durst metal gear, I saw some marks on the plastic gear so the arm seems to miss about 1/4" to fully enter into the metal gear. I don't want to force it and brake the plastic gear.
Maybe the end of the arm is not exactly as the end of the Lamot. See my pictures below.
The gears look the same, it is 39mm diameter and 17 tooths.
Metal gears will be ideal, do you know is someone still have them for sale?
Also I need some fuses for this LAMOT.

[Luis-F-S]

I'm posting the Hedes control unit for the Hemot motor. It's separate, not like the Lamot, since it can also be used to control the motor for the table (Bremot) in addition to the head motor (Hemot). The fuse says 250 V on one end, and ABC Buss 10 on the other end. So since I'm using 120v, it's a 10 amp fuse. Otherwise it would be 5 A for 220 V. I can't get to the plastic bearing right now, I'll try to measure it when I move some stored items in front of the cabinet where I keep parts. Not sure if that helps.

[Ginette]

I'm posting the Hedes control unit for the Hemot motor. It's separate, not like the Lamot, since it can also be used to control the motor for the table. The fuse says 250 V on one end, and ABC Buss 10 on the other end. So since I'm using 120v, it's a 10 amp fuse. Otherwise it would be 5 A for 220 V. I can't get to the plastic bearing right now, I'll try to measure it when I move some stored items in front of the cabinet where I keep parts. Not sure if that helps.

Thanks for looking Luis. I didn't know about the table control too, nice feature.
Pretty different for the fuses. From the LAMOT instructions manual:
"The LAMOT is available for AC 220 V / 50 cycles and 110V / 60 cycles .
Three 1 amp fuses (for 220 V/ 50 cycles) and three 2 amp fuses (for 110
V / 60 cycles) are supplied with the motor driven vertical adjustment system.
ln order to start the LAMOT switch on the current supply at the toggle switch
(3). The height of the enlarger head can now be adjusted in the required
direction by actuating one of the push-buttons of the twin push-button
switch (4); arrows next to each push-button indicate the direction in which
they control adjustment. If the distance between the enlarger head and t he
base board is rather large, it can be adjusted at the remote control switch (5) ,
while you are observing the projected image, by moving the knob (6) in the
required direction, at the same time noting the indications on the side of
the switch. ln the upper or lower limit position, the limit contacts (7) automatically
switch off the motor when they contact the counterweight spring
housing or the column guide plate."

I think I found the good fuse for the LAMOT that look to be what I can read on the very old fuse from my second Durst.
It is probably a Littelfuse 8AG 2A 361 a Fast-acting 1" long 1/4" diameter, 2A 250V. Littelfuse catalog number is 361 002. Here a screenshot from the Littelfuse specs.

I will inquiry about metal pinion gear to Durst-Pro USA and also to Glenview. If I remember well I think someone here said that Glenview duplicate theses pinion gears.
Maybe my problem that motor didn't always goes down immediately (without going up before) is relied to the plastic gear that was very used.

[Luis-F-S]

Here's the plastic gear I have. If anyone has access to a CNC Lathe, I'd send them one to duplicate it. At one time you could buy these in bronze, but I think they are long gone. Ginette, it has 17 teeth, and I get 38.7 mm dia, probably close enough to yours. L

[Ginette]

Here's the plastic gear I have. If anyone has access to a CNC Lathe, I'd send them one to duplicate it. At one time you could buy these in bronze, but I think they are long gone. Ginette, it has 17 teeth, and I get 38.7 mm dia, probably close enough to yours. L

I emailed you Luis.
If someone goes for the duplication, Jay (newvisionphoto on eBay) told me "Metal MUST be brass or nylon plastic petro chemical based material, or it will harm the worm gear."
Glennview and Glasser didn't have anymore (metal or nylon). Durst-Pro (Jensen) didn't answered me two weeks later, email again one week ago, still no answer

[Luis-F-S]

See if Jay knows of someone who can make it in brass. That would probably be easier than plastic. Did he have a source for it?

[bob carnie]

Ginette I have one here put aside that is metal the whole arm and gear its slated for you.