Wildman's MACH 2 rocket

Discussion in 'High Power Rocketry (HPR)' started by ColumbiaNX01, Jan 18, 2018.

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  1. Jan 18, 2018 #1

    ColumbiaNX01

    ColumbiaNX01

    ColumbiaNX01

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  2. Jan 18, 2018 #2

    blackjack2564

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    Crazy Jim's Gone Banana's

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    Yes, I'm in the begining stages of building a Mach-2 rocket............. 2 stage rocket.. or 2 of them stacked depending on how you look at it....LOL
    I plan on a build thread soon.[as get over this darn flu]
     
  3. Jan 18, 2018 #3

    RocketryBen

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    How high would it go on a L1000? It says on the website it will break mach 2 on a L1000, but doesn't say anything about altitude.
    Ben
     
  4. Jan 18, 2018 #4

    rfjustin

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    About 23K... ;)
     
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  5. Jan 18, 2018 #5

    RocketryBen

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    HOLY SH*T dude, really?!!???
    I may have to pick one of those up..
    Ben
     
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  6. Jan 18, 2018 #6

    rfjustin

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    Yup...

    Go get you one!
     
  7. Jan 18, 2018 #7

    Dad Man Walking

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    This thread caught my eye because I ordered one on Black Saturday and have been thinking about the build. It will be my first MD and first head-end rocket, so I'll have some new techniques to learn. Definitely looking forward to CJ's kit bash thread.

    Anyone else still waiting for BS deliveries? I didn't order motors, just a couple of kits and a few other things. I know I could call up Tim and ask, but it's more fun to hang out here and I don't have time to start the build anyway. Or builds, actually. The Mach 2 was a last minute impulse click, after the Falcon 3 was already in the cart. :)
     
  8. Jan 18, 2018 #8

    roytyson

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    You guys are serious? $90 for the rocket that goes Mach2 and 23,000 feet?
     
  9. Jan 18, 2018 #9

    patelldp

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    I mean it’s a tube, a cone, and some fins.
     
  10. Jan 18, 2018 #10

    6.5Grendel

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    I spoke with them yesterday and was told their fiberglass supplier was behind due to some other large contract taking all of their product. Tim was apparently at the manufacturer yesterday trying to get them to get his materials delivered.
     
  11. Jan 18, 2018 #11

    Steve Shannon

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    Minimum diameter rockets don’t have separate motor mount tubes or centering rings, which saves money. Some airframes also are not slotted, saving more money. Plus Wildman likes to move merchandise.
     
  12. Jan 19, 2018 #12

    afadeev

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    Here is mine, unpacked:
    WM Mach 2 actual.jpg


    Also enclosed is a .rkt and .ork files I build based on the actual dimensions (slightly different then those listed on WM site).
    View attachment Wildman_Mach 2.rkt
    View attachment Wildman_Mach 2-no motors.ork

    It is already a minimal diameter 54mm (2.65") rocket.
    3"/75mm would be another rocket altogether.

    On AT L1000, it sims out to 21.7K feet and 2,707 fps (Mach 2.4).


    a

    P.S.: post edited to fix sim bugs
     
    Last edited: Feb 25, 2018
  13. Jan 19, 2018 #13

    plugger

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    Thanks for the photo. Out of curiosity are your fins bevelled on the trailing edge? The photo CJ shared did have training edge bevelling but the photo you provided above it doesn't seem your fins received the same treatment.
     
  14. Jan 19, 2018 #14

    Keisling

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    CJ calls out the fin beveling in his thread... "PLEASE bear in mind...FINS do not come beveled like these!"
     
  15. Jan 19, 2018 #15

    plugger

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    Thanks Keisling and apologies for missing that!

    Edit: actually, I'll retract that apology. CJ posted that AFTER I asked the question! :D
    Edit2: maybe not, but I missed his new thread on the rocket. Regardless, I've ordered one. I needed some braided kevlar anyway and the price is just too good. Looking back at my records it's the first kit I've ordered since June 2015!
     
  16. Jan 19, 2018 #16

    MClark

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    At M-2 you don't need no beveled trailing edges..
     
  17. Jan 19, 2018 #17

    plugger

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    I'd go as far as to say no rocket needs bevelled fins; but to get the more speed and altitude out of any given vehicle you'll have better results with bevelled leading and trailing edges.
     
  18. Jan 19, 2018 #18

    pondman

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    Does not make him a bad person and adds to his charm...... :wink:
     
  19. Jan 19, 2018 #19

    Steve Shannon

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    I absolutely admire him for that. It keeps things much more interesting.
     
  20. Jan 19, 2018 #20

    afadeev

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    Strangely, the fins are beveled only on the leading edges.
    See (phone camera quality) closeups below:

    WM Mach fins 2.jpg Mach 2 fins.jpg

    Not sure if it's just my kit, or if they are all shipped this way.
     
  21. Jan 19, 2018 #21

    blackjack2564

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    One more time, they all come beveled on just LEADING edge.....do NOT contact Wildman asking/bitch'n about only leading edge beveling.

    I did BOTH on mine AFTER I got the kit.

    No reflection on you afadeev, I just want to clear this up for anyone looking.
     
  22. Jan 19, 2018 #22

    ksaves2

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    Fer chissakes people, a simple wedge is perfectly fine for a project like this so chill.
    23k? One better check their nearby waivers and stick a Tracker of some kind in there. Kurt
     
  23. Jan 19, 2018 #23

    rfjustin

    rfjustin

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    afadeev, CJ cleared up the fact this kit ships with the leading edge beveled only, so I don't want to beat the dead horse.

    With that being said, if you really want the trailing edge beveled, I can do that for you. PM me if interested.
     
  24. Jan 19, 2018 #24

    Dad Man Walking

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    $90 and a few bucks worth of good adhesives and it will go that up that high. Getting it back down safely and finding it is going to cost a lot more.
     
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  25. Jan 28, 2018 #25

    ColumbiaNX01

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    mach 2 rocksim??
     
  26. Jan 28, 2018 #26

    afadeev

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  27. Feb 8, 2018 #27

    Performance nut

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    You must have different defaults, I got mach 2.1 (2380 ft/s) and 14k feet for my sim. Still quite impressive and within altitude restrictions in my area :)
     
  28. Feb 8, 2018 #28

    Dad Man Walking

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  29. Feb 8, 2018 #29

    blackjack2564

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    Crazy Jim's Gone Banana's

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    I just checked that file from post 12...um it's wonky..only 3 fins way oversize and stability off the chart -3.06
    Nose cone wrong. Not 4-1 [9in] should be 5-1 haack [13.25in]

    Can't figure out why CG is BEHIND CP.... weight at 28oz is WAY off.

    Screen Shot 2018-02-07 at 11.33.30 PM.jpg


    No wonder your sims are so far off. You should be getting around 23-24,000 as Justin mentioned.

    Screen Shot 2018-02-07 at 11.39.38 PM.jpg

    I corrected it...added 4th fin etc. but the darn CG refuses to move.

    Mine built, no gear installed weighs 4lb 10oz.



    I'll just do another new file.
     
  30. Feb 8, 2018 #30

    Red Phenix

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    It might be worth checking whether one of the components has an override of weight or cg?


    Sent from my iPad using Rocketry Forum
     

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