Rocket Cradle Designs?

Discussion in 'Beginners & Educational Programs' started by JCRL, Oct 9, 2019.

Help Support The Rocketry Forum by donating:

  1. Oct 9, 2019 #1

    JCRL

    JCRL

    JCRL

    Well-Known Member

    Joined:
    Aug 1, 2019
    Messages:
    158
    Likes Received:
    34
    Location:
    Jet City, WA
    I see a lot of pictures on the forum of larger rockets in what I would call a "cradle" built from PVC pipes and foam to hold the rocket flat during construction. I could study the pictures and recreate it, but before I do that, does anyone have plans readily available?
     
  2. Oct 9, 2019 #2

    Nytrunner

    Nytrunner

    Nytrunner

    Master of Rivets

    Joined:
    Oct 15, 2016
    Messages:
    5,500
    Likes Received:
    1,305
    Gender:
    Male
    Location:
    Huntsville AL
    Don't think I've ever seen a 'plan' for them. They just kinda slip together

    2 crosses, 4 elbows, 4 caps (optional), lengths of pipe to suit your rocket.
    Don't glue everything, so you can take them apart or change them for different rockets
     
    GaryT and JCRL like this.
  3. Oct 9, 2019 #3

    JCRL

    JCRL

    JCRL

    Well-Known Member

    Joined:
    Aug 1, 2019
    Messages:
    158
    Likes Received:
    34
    Location:
    Jet City, WA
  4. Oct 10, 2019 #4

    cwbullet

    cwbullet

    cwbullet

    Obsessed with Rocketry Staff Member Administrator TRF Lifetime Supporter Global Mod

    Joined:
    Jan 24, 2009
    Messages:
    22,618
    Likes Received:
    1,440
    Gender:
    Male
    Location:
    Glennville, GA
    Is anyone interested in a 3D Printed design?
     
  5. Oct 10, 2019 #5

    Billys2001

    Billys2001

    Billys2001

    Member

    Joined:
    May 25, 2019
    Messages:
    11
    Likes Received:
    9
    Gender:
    Male
    Location:
    Ventura, CA
    Yes, I been thinking about doing one but it hasn't bubbled up on my list of things.
     
  6. Oct 10, 2019 #6

    Rainmaker

    Rainmaker

    Rainmaker

    Forum Supporter TRF Supporter

    Joined:
    Jan 4, 2018
    Messages:
    119
    Likes Received:
    29
    Location:
    Austin, Texas
    I'm curious what you could come up with and what size it could accomodate.
     
    cwbullet likes this.
  7. Oct 10, 2019 #7

    cwbullet

    cwbullet

    cwbullet

    Obsessed with Rocketry Staff Member Administrator TRF Lifetime Supporter Global Mod

    Joined:
    Jan 24, 2009
    Messages:
    22,618
    Likes Received:
    1,440
    Gender:
    Male
    Location:
    Glennville, GA
    What size do you want? I can probably come up with a design to support up to 4 inches.
     
    JCRL likes this.
  8. Oct 10, 2019 #8

    Rainmaker

    Rainmaker

    Rainmaker

    Forum Supporter TRF Supporter

    Joined:
    Jan 4, 2018
    Messages:
    119
    Likes Received:
    29
    Location:
    Austin, Texas
    That would fit 80% of what I build.
     
  9. Oct 10, 2019 #9

    Billys2001

    Billys2001

    Billys2001

    Member

    Joined:
    May 25, 2019
    Messages:
    11
    Likes Received:
    9
    Gender:
    Male
    Location:
    Ventura, CA
    If able something parametric that can support different sizes. Most of what I do is LPR/MPR so BT-50 up to 2.6 inches. Also if it folded flat for storage when not in use would be good.
     
    Rainmaker and JCRL like this.
  10. Oct 11, 2019 #10

    cwbullet

    cwbullet

    cwbullet

    Obsessed with Rocketry Staff Member Administrator TRF Lifetime Supporter Global Mod

    Joined:
    Jan 24, 2009
    Messages:
    22,618
    Likes Received:
    1,440
    Gender:
    Male
    Location:
    Glennville, GA
    I will look at what is out there and either modify or make something new.
     
  11. Oct 19, 2019 #11

    Alan R

    Alan R

    Alan R

    Well-Known Member

    Joined:
    Oct 11, 2018
    Messages:
    82
    Likes Received:
    26
    Location:
    Oregon
    I just updated mine today. I added the foam stuff. The pretty green foam stuff is kiddie-costume nunchucks from the dollar store. $1 total for all that foam padding.
    4x 90-degree bends, 2x cross pieces, and about 4' of 1/2" pvc ... just a note I remember i had to go to the plumbing supply store to get the 4-way cross pieces. Lowes did not carry those.
    All in all it will cost about $5.
    Here's the obligatory picture so you can build it yourself. Mineis 3" pieces on the bottom, 4" pieces on the top and 12" pieces lengthwise. IMG_20191018_183012174.jpg
     
    JCRL likes this.
  12. Oct 19, 2019 #12

    JoeTekcor

    JoeTekcor

    JoeTekcor

    Forum Supporter TRF Supporter

    Joined:
    Sep 24, 2018
    Messages:
    83
    Likes Received:
    25
    Gender:
    Male
    I’ll add that I don’t recommend using pipe insulation, the kind that has the adhesive that sticks the sides together. The adhesive gets gummy and will get all over your rockets. Find something like the pic above or pool noodles.
     
  13. Nov 5, 2019 #13

    scadaman29325

    scadaman29325

    scadaman29325

    Catching up and tripping all over myself.

    Joined:
    Feb 6, 2004
    Messages:
    326
    Likes Received:
    42
    Gender:
    Male
    Location:
    Clinton, SC
    20191105_181410.jpg This guy had a pretty good idea.
     

    Attached Files:

    Vdutel, Wallace, JCRL and 3 others like this.
  14. Nov 6, 2019 #14

    Donnager

    Donnager

    Donnager

    Well-Known Member

    Joined:
    May 29, 2019
    Messages:
    57
    Likes Received:
    22
    Gender:
    Male
    And if he has an issue, a convenient box for the remains.
     
    Tyler P, Vdutel, Tom327Cat and 2 others like this.
  15. Nov 8, 2019 #15

    SDramstad

    SDramstad

    SDramstad

    Well-Known Member

    Joined:
    Jun 26, 2014
    Messages:
    323
    Likes Received:
    112
    I use tee's instead of elbows so I can add sections to it
     
    JCRL likes this.
  16. Nov 20, 2019 #16

    Funkworks

    Funkworks

    Funkworks

    Well-Known Member

    Joined:
    Jul 28, 2018
    Messages:
    254
    Likes Received:
    51
    Gender:
    Male
    If I wrote it down, my plan would look like:

    Find:
    - 2 feet of 3/4" PVC piping
    - 8 inches of foam pipe insulator (sold in 3 ft length in my local stores).
    - 12 caps for 3/4" pipes.

    Procedure:
    Step 1: Cut piping into 12 pieces, each 2-inch long. ("I's") and sand.
    Step 2: Fit or glue 8 "I's" to the 8 ending of 2 "X's".
    Step 3: Fit or glue 4 "T's" to neighbouring ends of the 2 "X's".
    Step 4: Fit or glue the 4 remaining "I's" to the "T's".
    Step 5: Fit a cap wherever you can.
    Step 6: Wrap the 4 cradle arms in foam (insulator foam is found in same store aisle as piping).
    Step 7: Done!
     
    JCRL likes this.
  17. Nov 20, 2019 #17

    cwbullet

    cwbullet

    cwbullet

    Obsessed with Rocketry Staff Member Administrator TRF Lifetime Supporter Global Mod

    Joined:
    Jan 24, 2009
    Messages:
    22,618
    Likes Received:
    1,440
    Gender:
    Male
    Location:
    Glennville, GA
    I have seen that before. Great recycling idea.
     
  18. Nov 26, 2019 #18

    JStarStar

    JStarStar

    JStarStar

    Well-Known Member

    Joined:
    Jun 6, 2009
    Messages:
    2,526
    Likes Received:
    54
    For small-to-medium LPR models, I've cut V-notches in the sides of a Tim Horton TimBits box and it works fine.

    That reminds me, I better go buy a box of TimBits!
     
    Last edited: Nov 26, 2019
    JCRL likes this.
  19. Nov 28, 2019 #19

    lcorinth

    lcorinth

    lcorinth

    Well-Known Member

    Joined:
    Aug 5, 2014
    Messages:
    1,000
    Likes Received:
    26
    I've done that. Especially helpful when teaching rocket camp. Each kid got a shoe box to keep their parts in, and it could be used as a cradle during construction.
     
    Vdutel and JCRL like this.
  20. Nov 28, 2019 #20

    Nathan

    Nathan

    Nathan

    TRF Supporter

    Joined:
    Apr 20, 2012
    Messages:
    2,047
    Likes Received:
    297
    I've made a bunch of PVC stands over the years. I don't have any plans but here are a few pictures . . .
    [​IMG]
    [​IMG]
    [​IMG]
     
  21. Dec 18, 2019 #21

    58pan

    58pan

    58pan

    Forum Supporter TRF Supporter

    Joined:
    Dec 10, 2017
    Messages:
    57
    Likes Received:
    21
    Gender:
    Male
    Location:
    Michigan
    I couldn't find any crosses locally but I had tubing and tees. Nothing is glued. Stick a longer or shorter piece in for different length rockets. Stick on foam tape to protect paint. Cheap, easy, adjustable, comes apart for storage. Do like that double rocket stand, will have to build one. IMG_1582.JPG
     
    Last edited: Dec 18, 2019
  22. Dec 18, 2019 #22

    Wallace

    Wallace

    Wallace

    Sponsor TRF Sponsor TRF Supporter

    Joined:
    Feb 16, 2017
    Messages:
    2,419
    Likes Received:
    415
    I've made a few myself. Beauty of the system is the relative cost of PVC/ABS tubing and fittings,foam pipe insulation if you're concerned about protecting your finish , they're stupidly cheap, and they tend to fit snugly so glue could be considered optional if your the experimenting with differing configurations type. A PVC cutter is handy and will save a lot of clean up time, but not really necessary. Consider it a big Tinker Toy set, combinations are literally endless..
     
  23. Dec 18, 2019 #23

    Wallace

    Wallace

    Wallace

    Sponsor TRF Sponsor TRF Supporter

    Joined:
    Feb 16, 2017
    Messages:
    2,419
    Likes Received:
    415
    Or, that's a pretty free option right there. I like it!
     
  24. Dec 18, 2019 #24

    Alan R

    Alan R

    Alan R

    Well-Known Member

    Joined:
    Oct 11, 2018
    Messages:
    82
    Likes Received:
    26
    Location:
    Oregon
    Oh I like that design. Very ingenious. Those crosses are actually hard to locate.
     
  25. Dec 18, 2019 #25

    Wallace

    Wallace

    Wallace

    Sponsor TRF Sponsor TRF Supporter

    Joined:
    Feb 16, 2017
    Messages:
    2,419
    Likes Received:
    415
    Do you have a Lo wes/Home Depot/Menards nearby? They've always been on the shelf by me...
     
  26. Dec 18, 2019 #26

    Alan R

    Alan R

    Alan R

    Well-Known Member

    Joined:
    Oct 11, 2018
    Messages:
    82
    Likes Received:
    26
    Location:
    Oregon
    When i built mine, i went to Home Depot and Lowes both. Neither one carried the crosses. But I have a great plumbing supply store close to my house and picked them up there.
     
  27. Dec 18, 2019 #27

    SeanW78

    SeanW78

    SeanW78

    Well-Known Member

    Joined:
    Nov 8, 2019
    Messages:
    85
    Likes Received:
    22
    Gender:
    Male
    I had no issue finding crosses at Menards. I built mine all with 1/2" fittings.
     
  28. Dec 18, 2019 #28

    Wallace

    Wallace

    Wallace

    Sponsor TRF Sponsor TRF Supporter

    Joined:
    Feb 16, 2017
    Messages:
    2,419
    Likes Received:
    415
    Everything you may need to know in one place. Terminology is key. Unless you're speaking with your average 16 year old at your local home.center
     
  29. Dec 18, 2019 #29
  30. Dec 18, 2019 #30

    caveduck

    caveduck

    caveduck

    semi old rocketeer

    Joined:
    Jun 6, 2011
    Messages:
    1,247
    Likes Received:
    78
    mbeels likes this.

Share This Page

Group Builder