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  1. opcon

    Falcon Heavy Night Launch Picture

    I was looking for pictures of the night launch of Falcon Heavy for my desktop background and saw Elon tweeted a picture taken from a local photographer. Thought I would share. His work is copyrighted but I think it was worth $10...
  2. opcon

    OpenRocket on Linux?

    There were syntactical changes between v8 and v11. Some of the code would have to be updated or re-written. I love OR but I hate Java and I hate the JVM.
  3. opcon

    Attaching fins question

    I used a 100 grit to sand the fin attachment areas (very gently) to break through the clear outer layer and scuff the cardboard, but not to the point of damaging it. I didnt mask off the area, just drew my lines and went to town (very gently). I used 30 minute 2 part Bob Smith epoxy. When I...
  4. opcon

    CAD Software Suggestion for file extensions in this forum area

    I'd like help listing the file extensions that everyone would like to be able to attach to this section of the forum. I only use Inventor and Autocad. However I was thinking all supported types for Fusion 360, I know quite a few people use this since you can run it for non-commercial use for...
  5. opcon

    CAD Software Suggestion for file extensions in this forum area

    I'd like to know if we could obtain the ability to attach common CAD, tool path files, etc... to this section of the forum. I know we can zip files and attach that way, but is mildly inconvenient when doing back and forths. Maybe I should just be using Google Drive or Dropbox to do this. Just a...
  6. opcon

    mach1rocketry.com

    Thanks mate
  7. opcon

    mach1rocketry.com

    Is the site temporarily down? Went this morning to buy a kit and I can't reach it.
  8. opcon

    BT50 stand up to ~ Mach 1.15?

    I live a stones throw from Impulse Buys fee won't be an issue. All though it changes my plans somewhat for this weekend I'll continue with this project and switch to a less monstrous motor and buy a M1 kit for the G65. Thanks mate.
  9. opcon

    Forum Games - Word Association (for ALL TRF'rs)

    Water Landing
  10. opcon

    Forum Games - Word Association (for ALL TRF'rs)

    Lesser (beaten by Malbar70!)
  11. opcon

    BT50 stand up to ~ Mach 1.15?

    Cesaroni 144G65-8A - Unless I'm reading this wrong, this should be under L1 requirements. Who Needs HPR Certification?A person needs High Power certification if they: Launch models containing multiple motors with a total installed impulse of 320.01 Newton-seconds or more, or Launches models...
  12. opcon

    BT50 stand up to ~ Mach 1.15?

    I'm working on my BT50 MD build and to my surprise OpenRocket says max velocity is 1273 ft/s, apogee at over 6k. Should I switch to using FWFG airframe (Mach1), or need to sleeve the entire BT50 airframe with something like Apogee Components AS-24 Airframe Sleeve for 24mm tubes I'm not going to...
  13. opcon

    3D Printing What Are You Printing Today?

    Did this work out for you? I am drawing a similar NC right now for a scratch build. I would like to go with a Haack profile but the parabolic/ogive with an ellipsoid tip would work. I don't have a 3d printer, would anyone be willing to print a NC for me, can F&F Paypal.
  14. opcon

    Cutting 1/8" Plywood Fins

    I don't have many tools anymore for cutting wood. I picked up a carbide wood cutting disc and the required mandrel for my cordless Dremel. Has anyone gone this route before? I figured I would clamp the 1/8" to a large piece of 3/4" 7 ply as a work surface and use the 3M-Scotch Spray Mount...
  15. opcon

    Canting Tip Cord or Outboard Edge of Fins

    Thanks mate, I appreciate the detailed explanation.
  16. opcon

    Canting Tip Cord or Outboard Edge of Fins

    I've been looking at the countless possibilities for fin design and I'm wondering why I have not seen many with a canted tip cord or outboard edge? For example: Is this considered a poor design and if so would anyone be able to tell me why? I did some light interwebs searching and did not...
  17. opcon

    3D Printing ARCAS Fins

    If you can provide some rough dimensions I'm sure I can model these fins for you.
  18. opcon

    CAD Software Modeling boat tail - Inventor 2020

    Paul, work planes and work axis are amazing for modeling rocket parts and assemblies. It's so much easier and far less complicated to make constraints that don't require offsets or crazy helper geometry, just let the work plane/axis do that for you. Thanks again for the help.
  19. opcon

    CAD Software Modeling boat tail - Inventor 2020

    Thank you for the feedback. I gave this a shot this morning and wow, that's a whole lot easier than the craziness I did to make it work. I didn't even realize you could constrain planes together so much easier and your instructions were very easy to follow. Thanks again.
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