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Aluminium tube mast.

  • 11 Sep 2026 07:14
    Quote
    Reply # 13689899 on 13689368
    Anonymous member
    Andrew wrote:
    David wrote:

    I encourage you to make your own calculations and decision, Andrew. That's why I wrote this out, some years ago:

    https://junkrigassociation.org/junkfaqs_masts

    The section on aluminium tubes is still valid.

    Thank you David. I will study it, I know you've done a lot of work on stepped tubular masts so its good information. 
    Also, Arne's:
    Chapter 6b, The Hybrid Mast (ver. 20180917A)http://goo.gl/WE36w3
  • 10 Sep 2026 22:46
    Quote
    Reply # 13689409 on 13689365
    Anonymous member
    I do a lot of CAD work.


    Then I assume you know that one of the essential elements of design work is a knowledge of material properties. And if you do a lot of computer aided design work, you're perfectly capable of designing a mast, given the info that's freely available. However, if your CAD work is drawing pretty pictures on a computer...
  • 10 Sep 2026 22:16
    Quote
    Reply # 13689377 on 13689161
    Anonymous member

    I'm pretty sure I've posted this before, but this calculator is worth its weight in gold!

    https://jrcalc.oscarfroberg.com/
  • 10 Sep 2026 22:09
    Quote
    Reply # 13689368 on 13689358
    Anonymous member
    Anonymous wrote:

    I encourage you to make your own calculations and decision, Andrew. That's why I wrote this out, some years ago:

    https://junkrigassociation.org/junkfaqs_masts

    The section on aluminium tubes is still valid.

    Thank you David. I will study it, I know you've done a lot of work on stepped tubular masts so its good information. 
  • 10 Sep 2026 22:08
    Quote
    Reply # 13689365 on 13689355
    Anonymous member
    Anonymous wrote:
    Anonymous wrote:

    Is this likely to be strong enough for a 10m mast on my Sabre 27? Thanks.

    It looks hopeful. Who drew the plan? it certainly looks like somebody who had an idea about what they're doing. Or did you draw it yourself?

    Hi Tony, I drew it myself. I do a lot of CAD work.
  • 10 Sep 2026 22:05
    Quote
    Reply # 13689358 on 13689161
    Anonymous member

    I encourage you to make your own calculations and decision, Andrew. That's why I wrote this out, some years ago:

    https://junkrigassociation.org/junkfaqs_masts

    The section on aluminium tubes is still valid.
  • 10 Sep 2026 22:04
    Quote
    Reply # 13689355 on 13689161
    Anonymous member
    Anonymous wrote:

    Is this likely to be strong enough for a 10m mast on my Sabre 27? Thanks.

    It looks hopeful. Who drew the plan? it certainly looks like somebody who had an idea about what they're doing. Or did you draw it yourself?
  • 10 Sep 2026 19:36
    Quote
    Message # 13689161
    Anonymous member

    Is this likely to be strong enough for a 10m mast on my Sabre 27? Thanks.

    1 file
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