Page 69 of 72 FirstFirst ... 19596768697071 ... LastLast
Results 681 to 690 of 715

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

  1. #681
    ic-racer's Avatar
    Join Date
    Feb 2007
    Posts
    5,507

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

    I was able to use the Dremel diamond bit to bevel some AN glass I cut down from 5x7 for my 4x5 enlarger. I do have a spare reflector and believe I would be able to enlarge the opening with that Dremel bit.

    Click image for larger version. 

Name:	Dremel AN Glass.jpg 
Views:	15 
Size:	31.5 KB 
ID:	201401
    Click image for larger version. 

Name:	Old and New durst Reflectors 2.jpg 
Views:	18 
Size:	61.9 KB 
ID:	201402

  2. #682

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

    Seems like a manageable task to undertake albeit slowly and not being to aggressive with it. My next question is to ensure that the G38 Mogul bi post pins will work. I will probably have to pull my bulb and make some measurements. Below is the specifics of the bulb I am looking at.

    Click image for larger version. 

Name:	Screen Shot 2020-03-02 at 3.27.00 PM.jpg 
Views:	23 
Size:	35.7 KB 
ID:	201403Click image for larger version. 

Name:	Screen Shot 2020-03-04 at 3.15.37 PM.png 
Views:	20 
Size:	61.7 KB 
ID:	201404

  3. #683
    ic-racer's Avatar
    Join Date
    Feb 2007
    Posts
    5,507

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

    Not that one. It is FTL that will fit the socket as the COLAMP2000. See how the two pins are different sizes:
    https://www.interlightus.com/light-bulb/FTL

    I bought one of those FTL lamps about ten years ago, but I can't find it now. Maybe I sent it back when I found it did not fit through the reflector.

  4. #684

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

    Quote Originally Posted by ic-racer View Post
    Not that one. It is FTL that will fit the socket as the COLAMP2000. See how the two pins are different sizes:
    https://www.interlightus.com/light-bulb/FTL

    I bought one of those FTL lamps about ten years ago, but I can't find it now. Maybe I sent it back when I found it did not fit through the reflector.
    Thanks for the info. Any idea of the diameter of these bulbs?

  5. #685

    Join Date
    Aug 2012
    Posts
    8

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

    This are specs for COLAMP 2000 that I used when was playing with producing new ones:

    type Projection Lamps
    Length 140 mm
    52000 lum (4141 cp)
    Col.Temperature 3200 K
    Voltage 240 or 220/230V
    A 9.09 A (220V)
    Av.Life 300H
    Filament CC-8
    40 x 7.5 (H x W)
    Glass Diam 13/8 "

    Base GY 16 2-pin
    Light Center Length 3.35 inch (85 mm)
    Maximum Overall Length 5.71 inch (145 mm)

    Maybe that helps somebody.
    Check focal point and filament size or reflector wouln't work correctly.Click image for larger version. 

Name:	DSC_6143.jpg 
Views:	23 
Size:	52.4 KB 
ID:	201421

  6. #686

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

    Quote Originally Posted by Chuki View Post
    This are specs for COLAMP 2000 that I used when was playing with producing new ones:

    type Projection Lamps
    Length 140 mm
    52000 lum (4141 cp)
    Col.Temperature 3200 K
    Voltage 240 or 220/230V
    A 9.09 A (220V)
    Av.Life 300H
    Filament CC-8
    40 x 7.5 (H x W)
    Glass Diam 13/8 "

    Base GY 16 2-pin
    Light Center Length 3.35 inch (85 mm)
    Maximum Overall Length 5.71 inch (145 mm)

    Maybe that helps somebody.
    Check focal point and filament size or reflector wouln't work correctly.Click image for larger version. 

Name:	DSC_6143.jpg 
Views:	23 
Size:	52.4 KB 
ID:	201421
    My bulb length checks out close to yours (just shy of 4" from the end of the bulb to the beginning of the white ceramic base) but the bulb diameter spec of 1 3/8" listed above for the COLAMP 2000 listed above seems wide to me and at this diameter this bulb would not fit into my reflector as I see it. My halogen bulb has a diameter of 0.9". I can also see how only about the top half of the halogen bulb physically goes "into" the reflector on my unit but I guess it gets the job done.

  7. #687
    ic-racer's Avatar
    Join Date
    Feb 2007
    Posts
    5,507

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

    Colamp2000 are about 26mm in diameter and the hole in the reflectors about 32mm. The FTL bulges to about 36mm in the middle (see below). So it is very close, not much glass would need to be removed from the reflector.
    Last edited by ic-racer; 15-Mar-2020 at 08:40.

  8. #688
    ic-racer's Avatar
    Join Date
    Feb 2007
    Posts
    5,507

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

    Going back through this thread it really amazes me how time flies. Posts from 2009 seem like yesterday.
    Anyway I did find one of my FTL (CP43) 2000W lamps I got in 2009 and it does indeed fit in the hole in my reflector without enlarging the hole.
    So, it looks like there were two different versions of the FTL, one with the bulge and one without.

    What I cannot answer right now is if the FTL (CP43) without the bulge is still in production.

    The picture below shows two different FTL (CP43) lamps from different sources. Top one is 36mm, the bottom one is 26mm.

    Click image for larger version. 

Name:	Screen Shot 2020-03-15 at 11.32.48 AM.jpg 
Views:	17 
Size:	19.5 KB 
ID:	201698

    Click image for larger version. 

Name:	FTL Lamp.jpg 
Views:	10 
Size:	32.3 KB 
ID:	201703

  9. #689
    ic-racer's Avatar
    Join Date
    Feb 2007
    Posts
    5,507

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

    Potential substitutes for Colamp2000

    FTL CP43 26mm Tungsram.pdf

    FTL CP43 26mm.pdf

  10. #690

    Join Date
    Jul 2007
    Posts
    56

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

    I have a Coolamp and/or Thorn, if you are interested?

Similar Threads

  1. 8X10 ENLARGER
    By ric YAMA in forum Resources
    Replies: 7
    Last Post: 28-Mar-2011, 12:26
  2. 8x10 Enlarger...HELP please talk me out of it!!
    By ic-racer in forum Darkroom: Equipment
    Replies: 92
    Last Post: 18-Feb-2008, 07:09
  3. cold light head for durst 8x10
    By Herb Cunningham in forum Darkroom: Equipment
    Replies: 5
    Last Post: 12-Sep-2007, 10:05
  4. Durst 184 8x10 enlarger
    By David Michael Bigeleisen in forum Darkroom: Equipment
    Replies: 4
    Last Post: 27-Jul-2007, 06:29
  5. Fotar 8x10 Enlarger used horizontally?
    By Eric_6227 in forum Darkroom: Equipment
    Replies: 6
    Last Post: 22-Apr-2006, 13:02

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •