xml lens 18.5mm square or less?- Mtbr.com
Results 1 to 15 of 15
  1. #1
    mtbr member
    Reputation:
    Join Date
    Nov 2006
    Posts
    570

    xml lens 18.5mm square or less?

    I have some nice 1/8" thick rectangular aluminum looking for a project. The interior dimensions of the tubing are 44mm X 18.6mm. I was hoping to groove the tubing and build a double XML sled style bar light. I know that smaller lenses are not ideal but what would be some recommendations? Would I have room and would you recommend a triple? This will be used on the road and trail. I would like it to be a stand alone light for the road. On the trail I would probably use it along with a headlamp.
    thanks in advance everyone.
    andy

  2. #2
    mtbr member
    Reputation:
    Join Date
    Oct 2008
    Posts
    1,322
    Consider the Regina reflector. It can be slightly squished to fit in your tubing, or you can shorten to reduce maximum diameter.

    Thread using regina

  3. #3
    mtbr member
    Reputation:
    Join Date
    Nov 2006
    Posts
    570
    That's just what I wanted to hear! I haven't used a regina before but have seen the beamshots and always wanted to build a light using them. That sounds much better than settling on a lesser lens. Thanks!

  4. #4
    mtbr member
    Reputation: znomit's Avatar
    Join Date
    Dec 2007
    Posts
    1,982
    XMLs won't throw well enough for a road light IMHO. I'd go with XP-E myself.

  5. #5
    mtbr member
    Reputation:
    Join Date
    Jun 2010
    Posts
    201
    +1 on the XPE for road. Your reflector area isn't large enough for an XML. In order to get a narrow beam from an XML, you need a much larger area for the reflector (or optic).

  6. #6
    mtbr member
    Reputation:
    Join Date
    Nov 2006
    Posts
    570
    OK, now where's the best place to get regina's? I can only find them on Cutter's website in stock. Any places in the US where I can buy small quantities? thanks.

  7. #7
    mtbr member
    Reputation:
    Join Date
    Jun 2010
    Posts
    201
    For Ledil Regina reflectors, you can try digikey.com.

    You'll have to check stock

  8. #8
    mtbr member
    Reputation:
    Join Date
    Nov 2006
    Posts
    570
    Yea, Digikey shows out of stock until the end of October.

  9. #9
    mtbr member
    Reputation: mattthemuppet's Avatar
    Join Date
    Jul 2004
    Posts
    2,374
    I think I have one spare kicking around if you want it - it's drilled out for an XM-L though.

  10. #10
    mtbr member
    Reputation:
    Join Date
    Nov 2006
    Posts
    570
    Thanks Matt, I'm in no hurry and need two anyway. Still undecided on XML or XPE.

  11. #11
    mtbr member
    Reputation: znomit's Avatar
    Join Date
    Dec 2007
    Posts
    1,982
    Quote Originally Posted by Andy13 View Post
    Thanks Matt, I'm in no hurry and need two anyway. Still undecided on XML or XPE.
    Split the difference...
    XPG

  12. #12
    mtbr member
    Reputation: mattthemuppet's Avatar
    Join Date
    Jul 2004
    Posts
    2,374
    even better, XP-G2 Should throw really nicely with a Regina.

  13. #13
    mtbr member
    Reputation:
    Join Date
    Aug 2007
    Posts
    296
    Pity your tube isn't a bit wider I have a really nice 20.5mm square optic at 10D FWHM
    [IMG]https://www.cutter.com.au/prodimages/100110d.jpg[/IMG

    The other alternate is the Carclo 10mm Square optics

    I would recommend for bike apps, go XPE-2, no contest
    Last edited by WeLight; 10-10-2012 at 02:49 PM.
    Cheers
    WeLight

    Cutter Electronics Pty Ltd www.cutter.com.au

  14. #14
    mtbr member
    Reputation: mattthemuppet's Avatar
    Join Date
    Jul 2004
    Posts
    2,374
    saw this on BLF, which might be an option. No idea on how good it is though.

    Such a shame you don't have just an extra 1.5mm to play with, then you'd have a whole host of optics to choose from.

  15. #15
    mtbr member
    Reputation:
    Join Date
    Apr 2007
    Posts
    29
    Just use a rattail file and take a bit off the inside of the tubing. You can get by with 1/16 walls. Since you have 1/8 walls, you have about 3 mm you can take off (and you don't have to take that off the entire inside surface--just where it interferes with the reflector). Just remember to not groove that area.

Members who have read this thread: 0

Posting Permissions

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

THE SITE

ABOUT MTBR

VISIT US AT

© Copyright 2020 VerticalScope Inc. All rights reserved.