Best way to mount rail buttons

Discussion in 'High Power Rocketry (HPR)' started by ArthurSull, Jul 9, 2013.

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  1. Jul 10, 2013 #31

    SinfulDarkLord

    SinfulDarkLord

    SinfulDarkLord

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    Of course, they were designed for the standard 80/20. They slide in and out real smoothly too.
     
  2. Jul 10, 2013 #32

    degreaser

    degreaser

    degreaser

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    This is one way to do it. The mount is a stack of centering rings epoxied together, cut to fit in the well. There are sets of two as I had intended on using PML rail guides rather than buttons but buttons will work just as well.

    railmounts03.jpg
     
  3. Jul 10, 2013 #33

    SinfulDarkLord

    SinfulDarkLord

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    The paint is really stuck to the airframe as well. You would expect to be able to rip it off with your hands. Well guess what I tried it and it wont budge.
     
  4. Jul 10, 2013 #34

    SinfulDarkLord

    SinfulDarkLord

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    In my opinion and experience there is no worry since the rail guides slide in and out real easy from the rail. You both make it seem as though the paint will peel off due to the force of take off. Well guess what Ive launched a 54mm rocket on an I and J motor and the guides never came off and my rocket flew straight up into the air. Let me ask a personal question, have you both even tried them before?
     
  5. Jul 10, 2013 #35

    bill2654

    bill2654

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    I like the Acme rail guides and I always JB weld them to the airframe BEFORE painting. Your skating on thin ice darklord.
     
  6. Jul 10, 2013 #36

    SinfulDarkLord

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    I must be one lucky dude I suppose. In your experience loading your rockets on to the pad, do they slide in real easy?
     
  7. Jul 10, 2013 #37

    bill2654

    bill2654

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    Yeah they slide great. I have also forgot to install rail buttons on a painted and finished rocket. I sanded off the paint and JB'd the rail guides on. I hated to do it but it's better than risking an accident.
     
  8. Jul 10, 2013 #38

    SinfulDarkLord

    SinfulDarkLord

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    My point being that they slide in and out with ease is that there is no risk of an accident when bonded over paint. If such accident was possible you would have been able to rip the rail guides off with your hands. I've always found if you can't break it, it will survive.
     
  9. Jul 10, 2013 #39

    jadebox

    jadebox

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    Oh ... here's a tip regarding rails and rail buttons ....

    Purchase a short length of 1010 (or 1515 for larger rockets) extrusion from McMaster-Carr or eBay to use to check your rail buttons. It's better to find out that something's wrong in your workshop than out at the launch pad. A short length of rail doesn't cost much and the shipping cost is low.

    -- Roger
     
  10. Jul 10, 2013 #40

    SinfulDarkLord

    SinfulDarkLord

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    I dont need to test it since I've already tried it, but you are right to do that first. You can also get the 80/20 rails at Amazon for $3+ shipping and handling.
     
  11. Jan 11, 2019 #41

    Ez2cDave

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    Hmm . . . 6 years later . . . I wonder ?

    Dave F.
     
  12. Jan 11, 2019 #42

    David Schwantz

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    I also like a ply backer in the airframe. I run a blind nut on the inside, epoxy it in place and then glue the whole assy on the inside. Run a flat head thru the rail button into the blind nut with blue loctite. Make sure it can rotate.
     
  13. Jan 12, 2019 at 4:34 PM #43

    Buckeye

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    More dead threads, Dave?
     
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  14. Jan 12, 2019 at 4:58 PM #44

    jahall4

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  15. Jan 13, 2019 at 2:17 AM #45

    Ez2cDave

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    Yep . . . Probably more on the way, too . . . Don't like it, don't read it !

    Dave F.
     
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  16. Jan 13, 2019 at 2:34 AM #46

    David Schwantz

    David Schwantz

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    No such thing as a "dead thread" Lots of good info out there. How many times have you told someone "just do a search", there has already been a thread on that :)
     
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  17. Jan 13, 2019 at 4:06 AM #47

    Ez2cDave

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    David,

    Spot on, sir !

    On online forums, "just do a search" is the equivalent of "go away, kid" or "get off my lawn" . . . Rude & unnecessary . . . It is better to not answer a question at all, than to post some type of "snarky", insulting crap !

    If I find someone asking for help, I do my best to try to help them . . . Others, not so much !

    Dave F.
     

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