Wile E

Discussion in 'Oddrocs' started by JamesS, Jan 14, 2020.

Help Support The Rocketry Forum by donating:

  1. Jan 14, 2020 #1

    JamesS

    JamesS

    JamesS

    Active Member

    Joined:
    Dec 6, 2019
    Messages:
    26
    Likes Received:
    13
    Gender:
    Male
    Started this build a few years ago but didn't finish and I'm thinking if I start a thread maybe I'll put more effort on working on it. I don't plan to fly it (will it even?) this year but I still would like to complete the build at least. This is mostly just a fun project using miscellaneous parts and material I have lying around. Also, must catch and eat roadrunner!! haha.
    WileE.JPG
    Overall rough dimensions:
    WileEOverallDims.jpg
     
    Lukun7 and SeanW78 like this.
  2. Jan 14, 2020 #2

    CoachSteve

    CoachSteve

    CoachSteve

    Well-Known Member

    Joined:
    Feb 14, 2018
    Messages:
    298
    Likes Received:
    88
    Last edited: Jan 14, 2020
  3. Jan 14, 2020 #3

    CoachSteve

    CoachSteve

    CoachSteve

    Well-Known Member

    Joined:
    Feb 14, 2018
    Messages:
    298
    Likes Received:
    88
    JamesS likes this.
  4. Jan 14, 2020 #4

    CoachSteve

    CoachSteve

    CoachSteve

    Well-Known Member

    Joined:
    Feb 14, 2018
    Messages:
    298
    Likes Received:
    88
    [​IMG]
     

    Attached Files:

    GlenP, JamesS and SeanW78 like this.
  5. Jan 14, 2020 #5

    JamesS

    JamesS

    JamesS

    Active Member

    Joined:
    Dec 6, 2019
    Messages:
    26
    Likes Received:
    13
    Gender:
    Male
    Coach, is that your own attempt? Did you catch the roadrunner?

    I think I have a 6.25 pound "mass component" in my nosecone.
     
  6. Jan 14, 2020 #6

    JamesS

    JamesS

    JamesS

    Active Member

    Joined:
    Dec 6, 2019
    Messages:
    26
    Likes Received:
    13
    Gender:
    Male
    Will need to keep an eye out for leather straps at thrift shops.
     
  7. Jan 14, 2020 #7

    CoachSteve

    CoachSteve

    CoachSteve

    Well-Known Member

    Joined:
    Feb 14, 2018
    Messages:
    298
    Likes Received:
    88
    JamesS likes this.
  8. Jan 14, 2020 #8

    CoachSteve

    CoachSteve

    CoachSteve

    Well-Known Member

    Joined:
    Feb 14, 2018
    Messages:
    298
    Likes Received:
    88
    good luck - this would be an epic build - gonna need more fin area I think though :)
     
  9. Jan 15, 2020 #9

    BABAR

    BABAR

    BABAR

    Builds Rockets for NASA TRF Lifetime Supporter TRF Supporter

    Joined:
    Aug 27, 2011
    Messages:
    4,606
    Likes Received:
    576
    Not a sim expert. I noticed the configuration
    " [no motors]"

    If it means what I think it means, gonna be a problem when motors added.

    May be "tweakable" however with the fins a bit bigger, the body a bit longer, and the motor mount a bit longer (fins further back) without losing too much "Loony Tunes" (? "Luny Tunes"?) flavor.

    Those pointy fin tips may be a bit breakable.

    With that small motor mount and the BIG body tube, this would be a NICE model for rear ejection. You got TONS of space for chute between the mount and the body.

    The nose cone is glued (and I mean REALLY SOLIDYLY glued) in place, the motor mount is extended all the way up into the nose cone (put something in the inside of the nose cone tip to protect it from the ejection blast, or PLUG the forward end of the motor mount and punch a bunch of side holes to let the ejection charge go out the sides of the mount, still works.) You need a forward centering ring placed just aft of the base of the nose cone.

    Beauty of this is, you can put weight/mass on the forward end of the motor mount which is actually inside the interior of the nose cone at launch. With rear eject, the rocket comes back in two parts (you can connect them and use one chute or let them separate each with it's own chute.) The fin/motor mount unit with fall NOSE end first, so the weighted forward end of this unit takes the impact when it hits the ground, not the fin tips. Meanwhile, the rocket BODY and NOSE CONE section is a much lighter, so the impact has less force on it as well.
     
  10. Jan 16, 2020 #10

    Crawf56

    Crawf56

    Crawf56

    Pig Soooiiieee!! TRF Supporter

    Joined:
    Aug 16, 2016
    Messages:
    1,145
    Likes Received:
    142
    Gender:
    Male
    Location:
    Paragould, AR
    You could increase the inner part of the fins to attach to the bottom of the larger body tube. This would give more structural rigidity.

    Beep-beep! :)
     
  11. Jan 16, 2020 #11

    CoachSteve

    CoachSteve

    CoachSteve

    Well-Known Member

    Joined:
    Feb 14, 2018
    Messages:
    298
    Likes Received:
    88
    I know my Open Rocket mock up above is just for fun but here it is with a motor too :)
    the sim uses LOC standard tubing sizes - so I threw a 54mm K motor in there - just because
    [​IMG]
     
  12. Jan 16, 2020 #12

    SeanW78

    SeanW78

    SeanW78

    Well-Known Member

    Joined:
    Nov 8, 2019
    Messages:
    85
    Likes Received:
    22
    Gender:
    Male
    May want to increase the noseweight. -0.038 cal stability :eek::eek::eek:
     
  13. Jan 16, 2020 #13

    CoachSteve

    CoachSteve

    CoachSteve

    Well-Known Member

    Joined:
    Feb 14, 2018
    Messages:
    298
    Likes Received:
    88
    lol - not my build - I was just contributing to the awesome madness this thread is all about :)
     
  14. Jan 16, 2020 #14

    BABAR

    BABAR

    BABAR

    Builds Rockets for NASA TRF Lifetime Supporter TRF Supporter

    Joined:
    Aug 27, 2011
    Messages:
    4,606
    Likes Received:
    576
    Wow, 527 mph


    https://en.m.wikipedia.org/wiki/Greater_roadrunner

    Given RoadRunner has top speed of 30 kilometers per hour, the coyote might win this one!
     
  15. Jan 16, 2020 #15

    CoachSteve

    CoachSteve

    CoachSteve

    Well-Known Member

    Joined:
    Feb 14, 2018
    Messages:
    298
    Likes Received:
    88
    ok - since it is fun to think this could be real - here you go - big old fins and a 7 pound nose weight :)
    [​IMG]
    [​IMG]
     
  16. Jan 16, 2020 #16

    CoachSteve

    CoachSteve

    CoachSteve

    Well-Known Member

    Joined:
    Feb 14, 2018
    Messages:
    298
    Likes Received:
    88
    Don't forget the 5 foot parachute too - that will net you about 17 FT/s
    you know, to protect those pointy fin tips :)
     
    Last edited: Jan 16, 2020
  17. Jan 16, 2020 #17

    JamesS

    JamesS

    JamesS

    Active Member

    Joined:
    Dec 6, 2019
    Messages:
    26
    Likes Received:
    13
    Gender:
    Male
    Wile E's determination to catch Roadrunner is inspiring this build. :p Only if he had access to
    OpenRocket!

    Pulled various component parts from storage yesterday. Much of the nosecone is solid teak wood (7 lbs sounds good) that I started forming on a lathe. I no longer have access to a lathe, so will need to improvise to finish it.

    Thanks all for the ideas! Keep 'em coming! I'll try to post up a pic later of the parts I have so far. Also, don't you just put a bigger motor in to make a rocket stable?
     
  18. Jan 16, 2020 #18

    CoachSteve

    CoachSteve

    CoachSteve

    Well-Known Member

    Joined:
    Feb 14, 2018
    Messages:
    298
    Likes Received:
    88
    Here you go:
    [​IMG]
     
  19. Jan 16, 2020 #19

    JamesS

    JamesS

    JamesS

    Active Member

    Joined:
    Dec 6, 2019
    Messages:
    26
    Likes Received:
    13
    Gender:
    Male
    I guess it only works if the motor starts going past the CG. That's a beast of a looking rocket though!

    (Coach, your minimag project put thoughts in my head for my own minimag to go under the knife, lol)
     
  20. Jan 16, 2020 #20

    CoachSteve

    CoachSteve

    CoachSteve

    Well-Known Member

    Joined:
    Feb 14, 2018
    Messages:
    298
    Likes Received:
    88
    I had a lot of fun shaving every available ounce out of a Magg - nice kit as well - LOC does a good job
     
  21. Jan 17, 2020 #21

    JamesS

    JamesS

    JamesS

    Active Member

    Joined:
    Dec 6, 2019
    Messages:
    26
    Likes Received:
    13
    Gender:
    Male
    So here's the parts I have so far - PML airframe, 54mm blue tube for motor, centering rings and fins of 1/4" 5-ply, crazy looking unfinished nose cone. I forget why I have holes in my lower motor mount centering ring but I think the large hole was for either electronics or down facing keychain cam and the smaller holes were maybe just to shave some weight.
    _DSC8180.JPG
     

Share This Page