Page 3 of 5 FirstFirst 12345 LastLast
Results 21 to 30 of 46

Thread: Attention Please: Lotus LF & ULF users

  1. #21
    Jac@stafford.net's Avatar
    Join Date
    Dec 2012
    Location
    Winona, Minnesota
    Posts
    4,133

    Re: Attention Please: Lotus LF & ULF users

    My Deardorff V8 uses an aluminum plate with 3/8" thread. Its threads have never failed. Never over-tighten the screw.

  2. #22

    Join Date
    May 2016
    Posts
    338

    Re: Attention Please: Lotus LF & ULF users

    Quote Originally Posted by LabRat View Post
    Many of our wood cameras have brass (which is softer than today's aluminium alloys)... Is there a problem here???

    Steve K
    Why didn't manufacturers of small SLR cameras find out the same? Was there a problem there?

  3. #23

    Join Date
    Nov 2008
    Posts
    165

    Re: Attention Please: Lotus LF & ULF users

    You don't really need to guess how thick an aluminum plate needs to be in order for threads not to fail:

    http://www.engineersedge.com/thread_...engagement.htm
    https://www.fastenal.com/en/78/screw-thread-design

    These are just a couple of the resources available.

  4. #24

    Join Date
    Mar 2005
    Location
    Newbury, Vermont
    Posts
    446

    Re: Attention Please: Lotus LF & ULF users

    Helicoil

  5. #25

    Join Date
    Jan 2013
    Location
    Madisonville, LA
    Posts
    1,402

    Re: Attention Please: Lotus LF & ULF users

    Quote Originally Posted by Luis-F-S View Post
    I'll check the weight again when I get home
    I under estimated it, it's a shade over 27 lbs with the 6 to 4" adapter board installed.

  6. #26

    Re: Attention Please: Lotus LF & ULF users

    Quote Originally Posted by Luis-F-S View Post
    I under estimated it, it's a shade over 27 lbs with the 6 to 4" adapter board installed.
    That seems in line with the fact that my 32# Deardorff 1940 Marine V11 uses silver painted metal parts instead of aluminum parts on yours, has a heavy neoprene IR proof bellows as well as a rather beefy metal handle instead of the more common leather one. That being said I have been know to be sufficiently looney tunes to carry this boat anchor and all of the necessary contributing components as far as a quarter mile to a shooting location. Being perfectly honest I have yet to accomplish this in one trip as two is invariably necessary.

  7. #27

    Join Date
    Jul 2001
    Location
    San Francisco, CA
    Posts
    499

    Re: Attention Please: Lotus LF & ULF users

    We have wandered quite far afield from the issue at hand. Pierre's tripod plate problem. I'd say, drill some holes and screw it into those slats. That and every Lotus camera owner should wonder about how secure their tripod plate is.

  8. #28

    Re: Attention Please: Lotus LF & ULF users

    Quote Originally Posted by karl french View Post
    We have wandered quite far afield from the issue at hand. Pierre's tripod plate problem. I'd say, drill some holes and screw it into those slats. That and every Lotus camera owner should wonder about how secure their tripod plate is.
    Agree on the deviation of the original topic and I apologize.

    Depending upon the thickness of the wooden slats and their ability to properly support the base plate, one could also consider adding a similar sized top plate to anchor the tripod mount using flush mounted through screws. My concern structurally is the lateral force imparted upon the tripod mount could test the rigidity of the wooden base slats. Being perfectly honest wooden slats as the base of a camera is a risky design premise in a vain attempt to save weight and it very well could be why the builder of the camera did not add screws to the plate originally. Lets face it. How hard is it to add some screws for the builder? Just saying.

  9. #29

    Join Date
    Mar 2005
    Location
    Newbury, Vermont
    Posts
    446

    Re: Attention Please: Lotus LF & ULF users

    Screws to secure a base plate to wood should never depend on the wood alone to remain anchored...they should be machine screws captured on the opposite side with washers/lockwashers/blue-locktited nuts. A decent/cheap/lightweight alternative is to simply install a T-Nut from the inside of a wooden base - so that the "capture" occurs from the tripod-head side. But do set this T-Nut so that it will not spin at some point in the future.

    And yes...those slats will not represent enough weight savings to offset the true risk that they impose structurally. If one were to simply weigh the material removed to create those slats, this weight saving fallacy would become even more obvious...no matter that a manufacturer might choose such a route to arrive at some pre-determined target - which in the end can be a very dangerous (and expensive) strategy. I speak from sad experience!

  10. #30

    Join Date
    Mar 2005
    Location
    Newbury, Vermont
    Posts
    446

    Re: Attention Please: Lotus LF & ULF users

    ...anybody want to buy some custom-machined focussing shafts featuring through-holes spaced every five mm?

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
  •