Going For My Canadian Level 1-3 HPR Certification! - Wildman Shape Shifter Jr...

Discussion in 'High Power Rocketry (HPR)' started by rocketgeek101, Nov 11, 2013.

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  1. Jan 11, 2014 #91

    rocketgeek101

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    All I did towards the build today was to glue the motor mount into the booster airframe and glue the Switch band to the av-bay coupler. I used masking tape to make some tabs on the rear CR in order to be able to pull it out to do internal fillets once I've attached the fins.
    SDC10184.jpg SDC10185.jpg

    I've gotta say, I'm loving Rocketpoxy. I find I make much less mess (both in the workshop, and on the rocket) when using this stuff rather then regular hobby epoxy due to the fact it's a lot thicker. I can't find any squeeze bottles in the house, so it looks like I'm going to have to buy some. In the meantime, I've been using popsicle sticks to "scoop out" the correct amount of each part.

    The parts I need for the glueless nosecone mod are back in stock, so I'm planning on placing an order tomorrow.

    Next up: Fin attachment.
     
  2. Jan 11, 2014 #92

    blackbrandt

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    You can pick up squeeze bottles at walmart, or use empty ketchup containers.
     
  3. Jan 11, 2014 #93

    chadrog

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    Yup, these are 'bout a buck.
    P1010395.jpg
     
  4. Jan 12, 2014 #94

    rocketgeek101

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    Got the first fin tacked on:
    image-1445751356.jpg

    I buttered the fin root, inserted, removed and then repeated 3 times to make sure there was plenty of epoxy at the fin root/MMT joint. Once all the fins are tacked on, I'll be doing the external and internal fillets one set at a time to make sure the epoxy doesn't have a chance to run and ruin the fillet.

    Next up: I'm hoping to get the second fin tacked in place this evening and the third first thing tomorrow morning.
     
  5. Jan 12, 2014 #95

    rocketgeek101

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    I'm curious, have you flown it yet?
     
  6. Jan 12, 2014 #96

    rocketgeek101

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    Work on the Mini has begun!

    I sanded the components (except for the outside of the CRs as I fully expect to get epoxy on them when attaching them to the motor tube and that I'd have to sand them down again)

    After giving the parts their second bath, I preceded to dry fit the Motor mount, and then the whole rocket:
    SDC10197.jpg SDC10203.jpg

    One thing I noticed today, was that the Mini's nose has a rather significant warp to it (quite noticeable when viewed at the right angle). I'm debating whether or not to contact Wildman to see about getting a replacement. Nate/Nute, if you wouldn't mind; could you check the nose on your Shape Shifter Mini? (Just to get an idea if this is a common issue or not) Thanks in advance.

    Next up: Motor mount assembly for the Mini, and tacking the rest of the Jr's fins in place.

    Thanks for looking!
     
  7. Jan 12, 2014 #97

    nute

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    Looks nice!
    As for the nose cone, mine isn't really warped, but looks similar to yours. On mine it doesn't sit squarely on the tube. The shoulder where it transitions to the rest of the nose cone isn't write Even causing thenow Cove to not sit flat. I don't know if this is the problem with yours, but no mine isn't warped

    Nate
     
  8. Jan 12, 2014 #98

    rocketgeek101

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    Thanks for checking. Mine also doesn't sit flat, but that's fixable whereas a warp isn't.

    I'm in no rush, but I think I will contact Wildman in the next few days to see what they say.
     
  9. Jan 12, 2014 #99

    rocketgeek101

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    Using the process described above, I tacked the second fin in place:
    image-3162905088.jpg

    'Tis all for today. :)
     
  10. Jan 13, 2014 #100

    rocketgeek101

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    Got the third and final fin tacked in place:
    image-1033068535.jpg

    I mixed up more Rocketpoxy then was needed so I used the excess to practice using the black pigment. Things I learned: a little goes a long way! It just takes a drop or two to turn the whole batch a charcoal grey. I intend to paint the rocket, so I won't bother with using pigment on the fillets, but it's nice that they included some with the epoxy.

    So my consensus on Rocketpoxy is: A+! And if my opinion is worth anything, I would highly recommend you get some and try it out for yourself. :D
     
  11. Jan 13, 2014 #101

    GaryT

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    Sebastian,

    No the Shape Shifter 5 hasn't flown yet, actually the fins were only stuck in the BT to take the pic. 1st flight will be at Red Glare 16 in the Spring.
     
  12. Jan 13, 2014 #102

    UPscaler

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    A little tardy to the party on this one, but I like to say that people should fly the way they want on their certs. If they plan on flying 2 inch rockets on J motors then why not do it for your cert? Everyone has a preferred flying style.

    Take Jim Jarvis' L3 for example. Minimum diameter N4000 to almost 35,000 feet. It would almost have been weird if he flew something to 5-10k for his L3 :wink:




    Braden
     
  13. Jan 13, 2014 #103

    nute

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    I agree entirely with review of rocketpoxy; really great stuff!

    How do you plan to do the fillets? I used it for my mini, and I admittedly didn't do real amazing with the fillets:blush:

    Do you know when and where you plan to cert?

    Nate
     
  14. Jan 13, 2014 #104

    rocketgeek101

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    For the external fillets, Ill mask around the area with masking tape, and pull the epoxy with a popsicle stick or gloved finger.

    In the end I'm not sure if I'll do internal fillets. There really isn't much working room in the fin can. I'm thinking I'll go ahead with my previous plan and foam it instead. Though maybe I'll give the internal fillets a try first...

    Question: Does anyone know if fiberglass has to be sanded for expanding foam to adhere to it? And what's stronger, internal fillets or expanding foam (or are they about the same)?


    Assuming the weather cooperates and everything else works out, I'll be doing my Jr. Level 1 & 2 sometime this spring at our smaller flying field; and Jr level 3 at Rage at the Gage, our biggest launch event of the year that takes place over labour day weekend.
     
  15. Jan 13, 2014 #105

    rocketgeek101

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    Make sure to post some photos of the flight!

    Also, If you wouldn't mind, could you post some photos of your Shape Shifter Jr.'s recovery system and av-bay for me to look at?

    Thanks in advance.
     
  16. Jan 13, 2014 #106

    nute

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    Very cool! make sure to post pics of your fillets!

    In Canada you can certify Jr. L2/3!:eyepop: I don't think I knew you were gonna do the latter certs as junior!

    Lucky...;)

    As for foaming- I have never done it, but I would sand the tube, as it's the pitting and scratches that let it adhere. Either way, it couldn't hurt. I can't say which is stronger, but my guess is that the foam would be slightly stronger and more durable. That way if it hits hard, and something cracks, the repair will likely be easier. I'm just guessing here though.

    Nate
     
  17. Jan 14, 2014 #107

    rocketgeek101

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    Yep but it's the Canadian levels. So really it's only up to level 2 for you. I actually turn 18 late this year, but by that time this years flying season will be over and done with. To get my full certification, all I'll have to do is re-fly my rocket at the highest certification level achieved once I'm 18.

    I'll be sure to post pics of the fillets;)
     
  18. Jan 14, 2014 #108

    GaryT

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    This the Av-Bay I use in my Shape Shifter, I made it in 2008 so needless to say its got a bunch of flights on it. I'm not a fan of switch bands which is why all my Av-Bays use quick disconnects. Attach the SC, slide the main piece down the upper BT and connect the lower Av-Bay lid. I use this one bay for all my 2.1" birds.

    IMG_20140114_163732_391.jpg IMG_20140114_163936_411.jpg IMG_20140114_164022_608.jpg IMG_20140114_163838_822.jpg
     
  19. Jan 14, 2014 #109

    rocketgeek101

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    Thank-you! I'll use this as the basis for my Av-bay. I think the KISS principle is best for ones first av-bay. What kind of wire is best to use?

    Thanks.
     
  20. Jan 15, 2014 #110

    ksm2001

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    All the best on your Certification :cheers:

    Here are a couple pictures of my Av-Bay I use in my Darkstar Jr.
    The wire I use is 20 gauge silicone wire, I like it because its very flexible. A Mini Deans Connector (black) so I can remove the bulkhead, 280 mAh 2S lipo battery, small terminal blocks purchased from an electronics store, and a Featherweight Screw Switch that is accessed through a vent hole. I left the All Thread rods longer shown in the photo so I could tape the centrifugal 1.5g BP charges to it.
    I went with the Lipo battery because I already have battery chargers for them and I can use them into my Av-Bays where a 9 volt battery wont fit.

    Darkstar-Jr-Altimeter-Bay2.jpg

    Darkstar-Jr-Altimeter-Bay1.jpg
     
  21. Jan 23, 2014 #111

    rocketgeek101

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    So I emailed the vendor a few days ago, and he's placing an order for the stuff I need, but it will probably take a few weeks or so... Ah well... Still have plenty of time before the cert attempt.

    Thanks to all for the Av-bay pics!:)

    I spent the evening making a cradle for the Jr (and I suppose any other rocket that fits). So far I've been using the Aerotech box cradles, which work, but are getting worn out (it's only cardboard!) and I also wanted something nicer.
    image-3179057618.jpg image-3926404459.jpg

    I've got enough wood and strap left to build another, but this time I'll make it shorter so that I can use it for my shorter rockets.
     
    Last edited: Jan 23, 2014
  22. Jan 23, 2014 #112

    glenbo

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    Great build thread Sebastian,
    I probably wont get around to building mine till toward late spring. Im still tweaking my L3 project to fly in June.
     
  23. Jan 23, 2014 #113

    rocketgeek101

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    Thanks for the kind words!:) Good luck on your L3 cert!
     
  24. Jan 24, 2014 #114

    CF-105

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    That is a great-looking cradle! If I might make a suggestion: Take some leftover strap and add a handle on either side of the rocket. You'll be able to carry it like a tote bag :)
     
  25. Jan 24, 2014 #115

    GDJ

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  26. Jan 24, 2014 #116

    nute

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    That is really nice!

    I've seen others make a stand out of PVC so they can work on their rockets with Dual Deploy, but I really like the looks of that!
     
  27. Jan 24, 2014 #117

    qquake2k

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    Wow, that's one of the nicest cradles I've seen! I use PVC stands for my dual deploy.
     

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  28. Jan 24, 2014 #118

    rocketgeek101

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    Thanks for all the kind words!

    GDJ, feel free to make one yourself (and please post pics when you're done!:))

    I'm planning on using the leftover strap for a shorter cradle of the same design, but the handle idea is a good one (and I'll probably implement it in the future).

    Jim, I've got to say that your PVC cradles are pretty nice! I also like your Av-bay holder. I may have to make one for myself. :)

    -S


    Sent from my iPod touch using Rocketry Forum
     
  29. Jan 25, 2014 #119

    qquake2k

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    The av-bay holder is actually a rocket stand. Until I made the PVC stands, I had made a bunch of wood stands. The PVC work much better.
     
  30. Jan 25, 2014 #120

    rocketgeek101

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    Ah. Well it's still pretty neat all the same:wink:


    Sent from my iPod touch using Rocketry Forum
     

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