Dynasoar Rocketry RC Rocket glider kits

Discussion in 'Rocket Boosted Gliders' started by burkefj, Feb 23, 2015.

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  1. Feb 23, 2015 #1

    burkefj

    burkefj

    burkefj

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    This is a place to post feedback and questions about building and flying the dynasoar rocketry RC rocket glider kits shown below.

    www.dynasoarrocketry.com Will show current kits in production as well as links that show the step by step photos of how they go together as well as having the instructions videos.

    Altitudes vary from 500-600 feet on a 24mm E-6 rocket motor, flight times typically around a minute or more

    Spyplane
    [​IMG]
    Bomarc
    [​IMG]
    Mach 2
    [​IMG]
    Interceptor III
    [​IMG]
    Pegasus
    [​IMG]
    SST
    [​IMG]
    Arrow
    [​IMG]
    Valhalla
    [​IMG]
    DeltaDart
    [​IMG]
    Thunderchief
    [​IMG]
    Hypersonic III
    [​IMG]
    Hypersonic III
    [​IMG]
    Wolverine
    [​IMG]
    Jayhawk
    [​IMG]
    StratoDart
    [​IMG]
    Mig 21
    [​IMG]
    Pegasus
    [​IMG]
    Buzzbomb
    [​IMG]
    X-Plane
    [​IMG]
    X-24
    [​IMG]
    ArcLight
    [​IMG]
    Ikarus
    [​IMG]
    HL-10
    [​IMG]
    X-20
    [​IMG]
    Orion Starliner
    [​IMG]
     
    Last edited: Nov 8, 2017
  2. Feb 23, 2015 #2

    CZ Brat

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    Though I probably would not want to get one, I wanted to tell you how impressive they look. If the question is, do you have great looking RC BGs, the answer is yes. If the question is, how big is the market, I don't know.

    Very nice looking. I'm sure the fly great too.
     
  3. Feb 23, 2015 #3

    DuaneW

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    This is something I've been interested in for a while. My question would be which one boosts the easiest and has the most stable glide characteristics? That's the one I'd offer first.
     
  4. Feb 23, 2015 #4

    burkefj

    burkefj

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    Here are the newest kits from Dynasoar as a reference for posting reviews, comments, questions.

    Marauder cruise missile
    IMG_20171124_183255182.jpg

    Daedalus
    WP_20171119_13_59_51_Pro.jpg

    Stratodart 2
    WP_20171118_11_25_23_Pro (1).jpg

    Orbital Shuttle
    IMG_20171130_115435779.jpg
     
    Last edited: Nov 30, 2017
  5. Feb 23, 2015 #5

    K'Tesh

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    I'd be interested in seeing what a kit version of the SR-71'd be.
     
  6. Feb 23, 2015 #6

    morlock

    morlock

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    Me too. I love this bird :)

    (BTW, I wasn't away from the forum. I was frozen in Quebec's semi-permanent ice)
     
  7. Feb 23, 2015 #7

    burkefj

    burkefj

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    Here is a picture of the prototype.
     

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    Last edited: Mar 5, 2015
  8. Feb 23, 2015 #8

    morlock

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    Would a kit have more of a 3D shape (without being rounded like the original)?
     
  9. Feb 23, 2015 #9

    burkefj

    burkefj

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    The profile kits fly well because they are profiles and maximize the wing area, for the tube based models, they are 3-d shapes.



     
    Last edited: Nov 27, 2017
  10. Feb 24, 2015 #10

    oddmanrockets

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  11. Feb 24, 2015 #11

    AstronMike

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    It would be neat if you made a delta planform that was totally hands off on boost, for RC nOObs. I'd be on that! Especially if it was pretty simple single elevator and rudder without mixing/elevons.
     
  12. Feb 24, 2015 #12

    kjohnson

    kjohnson

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    If you look at what flat foam kits are going for (sub $40 for almost all of the stuff at Flite Test, $45 for the simple boxy jets at 6mmFlyRC.com) you may have to reevaluate your price point. I think they are interesting and my friend's X-15 flys well, but rocket folks complained that the big Estes SSO was too expensive when it was priced competitively with foamy RC planes at the time it was released.

    kj
     
  13. Feb 24, 2015 #13

    tab28682

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    Hard to fairly compare the price point of a RC rocket glider foamy kit with the ones from the much larger RC aircraft market. The numbers of kits involved for each interest are orders of magnitude apart.

    I think his mentioned price point is not out of line at all for a specialty niche kit like his SR-71.
     
  14. Feb 24, 2015 #14

    burkefj

    burkefj

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    Kevin, That's why I asked. One point, your examples didn't include the shipping cost of an extra $12 or $13, even an arcie is $35 plus shipping for single channel. The SSO was not a great flying model whatever it wound up costing.

    My thought was that this would be a service to rocket folks who may not have access to the components and would be willing to pay for an hour or more of my time to create them plus the parts themselves, boxes and shipping. This is not high volume laser cut stuff that can be cranked out by a button push and even if I did that it would save me time but cost would be a wash unless I did high volume.

    I appreciate the comments and discussion, keep it coming.

    Frank



     
  15. Feb 24, 2015 #15

    kjohnson

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    Yes, RCRG is a niche market. Even rocket companies haven't been able to keep RCRG kits in production due to that. I'd love to see more folks get into it and Frank's designs are a great way to do that. In the end though, we're talking about a flat depron RC plane kit so it's good to know what the competition for that is.

    It's also not fair to compare a new hand cut kit to a laser cut kit that's been on the market for a few years, but that's also the competition in the depron kit market. (Edit- I see Frank talked about this as I was typing)

    kj
     
    Last edited: Feb 24, 2015
  16. Feb 24, 2015 #16

    tab28682

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    I still think your comparison is not on point. While they are both flat foamies, comparing a flat foam R/C electric model kit that will sell in large numbers to a flat foam RC RG kit that will sell in very small numbers seems superficial at best. They are simply not the same product, even if the basic construction material is the same. The markets are markedly different in size, as we both mentioned. I happen to be one of a few that straddle both markets and I would not expect the kits to have similar pricing due to their innate differences.

    Some imported flat foamie R/c kits sell at premium prices well beyond the price threshold you speak of with the 6mm Foam kits and the R/C flite test kits. I see a lot of the Twisted Hobbies Crack R/C kits from Europe flying here locally and they go for around a hundred bucks plus shipping. Yes, they are pre-painted, but it is the quality of the kits is what really helps separate them from the average stuff.

    At the end of the day, the sales price and income from producing the kit has to be enough to make the person doing the kits willing to devote the time to get the kits produced and out the door, even if it is also something of a labor of love and a service to the people in the hobby. I have been involved in more than one kit and ARF kit venture and you can take that comment to the bank, as well as to heart...:)
     
  17. Feb 24, 2015 #17

    burkefj

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    I tried the black/gray depron but it was softer and didn't cut as well(tore) so I'll stick with the white.

    Frank
     
    Last edited: Jul 27, 2015
  18. Feb 24, 2015 #18

    K'Tesh

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    Mind you, I haven't done my homework on this topic, so please forgive the ignorance... How hard would these be to convert to electric? I'm imagining that it wouldn't be too hard to put in an electric motor and a light enough battery pack to fly this w/o the need to use a rocket motor. (for more fun... add in an 808 camera to the SR-71 and make it a real spy plane. :wink:)

    Oh, and I've little fear of Testors' paint (except for the price).
     
  19. Feb 24, 2015 #19

    mikec

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    I'd worry that people might not want to invest in the AT E6 ($80.55 for the case and $20.69 for a three-pack of reloads at BMS).

    If you want to fly electric, there are cheaper options. Flying RCRG requires a certain degree of something (motivation? masochism? I'm not sure what to call it) since the flight times are typically a lot shorter than what you can get with electric.
     
  20. Feb 24, 2015 #20

    burkefj

    burkefj

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    It's dead simple to convert them to electric flight. Almost all of my models I've flown as both rocket gliders and pusher electric. The build is nearly the same. I've made a small pod out of 18mm motor tube and 24mm centering rings with a $23 grayson microjet V-3 electric motor mounted that slides in and clicks into place in the 24mm motor mount held in place with the motor hook.

    When you build the models you need some sort of BEC(voltage regulator) to power the receiver/servos from the battery, so instead of using a plain BEC, I just use an 18 amp speed control with bec built in. It doesn't weigh much more, and then I just route the wires back to the motor mount. When I fly on rocket power, the ends of the wires aren't used and they dangle, and I use a 2 cell battery for power. When i use the electric, I just plug in the motor wires into the esc wires that are there, and use a 3s pack. The electric is slightly heavier than the 24mm motor, but if I use an 800mah 2s pack for rockets flight a 3s pack for electric flight, the CG is exactly the same. I only need one motor for all my models and I just swap it from model to model. That's one advantage to having the motor in the tail of the model. They grayson will have unlimited vertical with a 6x4 apc prop and 800mah pack or larger with a weight up to 16 ounces.

    http://www.graysonhobby.com/catalog/ghmicrojetv3brushlessoutrunnermotor-p-425.html


    Yes, as Mike says Motor setup cost is a hurdle. However you can't really compare it to a normal RC cost/flight. Compare it to a normal rocket flight. People don't think twice about burning $$ on casings and reloads for mid and highpower and after the burn, you are just watching it come down, with a similar flight time.....and then you have to go find it, with rc you don't have to go very far....A lot of people burn Estes D and E motors which are just as much if not more per flight....BTW, if you don't mind red arrow, their casings are $70 and reloads $18.99 for a 3 pack. It's really the cost of the case that bothers most people but it is machined from a solid piece with no forward closure instead of just a threaded tube. Cleanup is very easy, I just use a wet wipe, dry every three flights, but do relube the case each flight, just stick in the propellent, one o ring and nozzle and that's it.

    People pay $50-$75 for an altimeter, some put a dedicated altimeter in each rocket... but might balk at a $75 computer 6 channel radio with 10 model memory...it's all just how you think and what you value, it doesn't have anything to do with what's rational:)

    Quote from Mike: I'd worry that people might not want to invest in the AT E6 ($80.55 for the case and $20.69 for a three-pack of reloads at BMS).

    If you want to fly electric, there are cheaper options. Flying RCRG requires a certain degree of something (motivation? masochism? I'm not sure what to call it) since the flight times are typically a lot shorter than what you can get with electric.


    Picture1.jpg
     
    Last edited: Mar 2, 2015
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  21. Feb 24, 2015 #21

    mikec

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    Fair point, I guess we're all crazy anyway :)

    I've flown a fair bit of RCRG with a scratchbuilt foam delta on E15s and then a balsa-built-up Gamma Star. The short flight durations are a little frustrating. FWIW, of the stuff that Frank has made the ones that interested me the most were the Dyna-soar and shuttle built-up models, the flat ones less so. Recently I've been more thinking of something with a longer flight duration, like an S8D glider.
     
  22. Mar 2, 2015 #22

    burkefj

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    Ok, spent some time making up instructions, and templates. I cut the first set out, and will have a friend put it together sometime soon to be sure he is able to do it. Took 1.5 hours to do all the cutting and associated other work for one kit. It will fit into a large flat rate game board box and ship flat rate. I've done a lot of the hard work, hinged the control surfaces, installed the horns, assembled the motor mount, slotted the wing for the spars, test fit all the parts, laminated the bottom fuse piece and cut the stabs/slots at an angle. What's left is pretty simple glue, tape sort of thing. I also made a simple pod that clicks into the motor mount that you can fit a pusher electric motor to if you want that option. The kit can come with a 1/4" aluminum launch lug, or rail buttons. It includes the pushrods, velcro for mounting the battery/rx/bec and lead weight. If you are local to the portland, and I don't need to ship, I can avoid cutting the wing/fuselage pieces and save you a few steps during assembly. (To make sure things fit, i cut and fit them first then cut them down to fit into the box)

    Frank
     
    Last edited: Dec 13, 2016
  23. Mar 2, 2015 #23

    morlock

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    Really impressive! I'm not into rocket/RC glider (yet?), but this is beautiful. The SR-71 is kind of mythical :)

    How long is the model?
     
  24. Mar 2, 2015 #24

    burkefj

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    39" long and 22" wingspan, 9-11 oz rtf. It's a bit bigger than the old hobbylab version and lighter as well.

     
    Last edited: Mar 4, 2015
  25. Mar 2, 2015 #25

    burkefj

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    Redacted
     
    Last edited: Dec 13, 2016
  26. Mar 2, 2015 #26

    Massrokit

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    I'm interested. Please let me know any other information or details.

    Massrokit
     
  27. Mar 2, 2015 #27

    K'Tesh

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    You going to bring that to the OROC Meeting anytime soon?
     
  28. Mar 2, 2015 #28

    burkefj

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    I can bring the kit to the meeting this week. BTW, if you are wanting one and are local, I don't need to cut the parts down to fit into a box and that will save a few assembly steps.

    Frank


     
  29. Mar 2, 2015 #29

    K'Tesh

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    I'd say cut it down anyway... I'm thinking that it'd be useful if I need to ship it somewhere... before I can make it (Read:中国, 台灣;).
     
  30. Mar 2, 2015 #30

    aerostadt

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    That really looks like a really good offer. The price is very reasonable and the most time consuming part of the construction has been eliminated. I think your cutting of the parts looks better than what I did, too. I still need to do a few things on my SR-71 and get back to my build-thread.
     

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