Search results

The Rocketry Forum

Help Support The Rocketry Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
  1. watermelonman

    how thick is thin

    Who has stuck the calipers to modern fiberglass tubing? It looks to me like "thin wall" tends to be 1.6mm or less, while "traditional" or "thick wall" tends to be over 2.0mm in thickness. Obviously that varies with tube diameter and I am only looking at 38-98mm here. I am not looking for a...
  2. watermelonman

    silly undecided MAC novice

    I think I ought to try out a MAC kit. Four inch is good. I cannot decide between the Zodiac and Scorpion. 54mm is probably good since these seem so light I could easily fly them on 38mm, and adapting 75mm to 38mm sounds like a mess. As a result the fiberglass nose is probably not necessary...
  3. watermelonman

    high temp epoxy

    Is either Rocketpoxy or 4500P up to the level of ES-whatever number, or whatever Cotronics product is popular for serious aero heating?
  4. watermelonman

    perfectflite support

    Has anyone ever heard back from Perfectflite? I have sent several questions over the last year, none of which were showstopper issues, but kind of surprised to have not gotten a single reply.
  5. watermelonman

    top blue tube adhesives

    I see people using all kinds of adhesives with blue tube. With cardboard, fiberglass, and carbon fiber I feel like there is at least some consensus as to what the top few options are, but not with blue tube. Any strong reason to use wood glue, hobby epoxy, or something more serious?
  6. watermelonman

    relative cardboard tube strength

    I have an Estes Leviathan and a LOC Nuke Pro Max. The difference between the tubes is ridiculous, Estes feels like a toilet paper roll while I think I could hit the LOC tube with a golf club. I recently ordered a Madcow DX3, plain paper 2.6 inch version. What should I be expecting for the...
  7. watermelonman

    optimizing fin shapes

    A friend of mine with a vast aerodynamic encyclopedia in his head was explaining how optimizing the leading edge of a fin is a simple matter of matching a mach number to an angle. Well, it is less simple considering how much our rockets vary speed throughout flight, but at least I can understand...
  8. watermelonman

    gap in K300

    I assembled a K300 and the massive single grain is free to slide about a half an inch between the nozzle and forward closure. Is that normal? It sure seems weird to me.
  9. watermelonman

    nice cans

    Anyone recognize this? Please contact me if this was your work, commercial opportunities possible.
  10. watermelonman

    cesaroni vs forward seal disk

    Now that Aerotech has certified cross loads we have some more motor options. However, shortly after, they came out with a statement saying there were some problems with Cesaroni hardware because Cesaroni does not use a forward seal disk. They recommended continuing to use only Aerotech...
  11. watermelonman

    video formats for the long term

    I take lots of footage on my flights. Pictures I understand. JPG and RAW files get stored where I want, and I have data that most every image program on the planet can work with. Video is a totally different ball game. I use Mobius, 808, and Go Pro cameras. I open up the camera output in...
  12. watermelonman

    Aero Pack MC38 threaded connector

    This is the threaded connector to use Pro38 motors with Aero Pack MD retainers. Used once, works great. $8 plus shipping.
  13. watermelonman

    M1675 bonding

    I got myself an M1675 and am looking forward to flying it. The instructions say bond it, and I certainly will, but that tidbit sticks out as interesting to me. The M1670 blue, M1810 red, neither require bonding. Is the combination more volatile than either uniform motor? Would the blues...
  14. watermelonman

    BAR new site and sale

    Bay Area Rocketry is putting a new web site up, and running a twelve hour sale tomorrow centered around Madcow and Aerotech. https://www.bayarearocketry.com/
  15. watermelonman

    rusto 2x ultra in humidity

    Rusto 2x Ultra says to use above 50 degrees, below 65% humidity. What should I expect a little bit outside those guidelines? Still warm enough and nothing crazy, but maybe 73% humidity. I do not mind if it takes longer to dry but hope it still comes out well afterwards.
  16. watermelonman

    cesaroni 38mm3G

    Brand new, never opened Cesaroni 38mm3G casing. $30 and includes a spacer for good measure.
  17. watermelonman

    cesaroni 38mm5G

    Used but solid Cesaroni 38mm5G casing; according to my flight logs I have burned six motors in it. Perfect working order, but I have not been flying in this size at all. $35 and will include a spacer.
  18. watermelonman

    TeleGPS antenna length

    Has anyone out there got a TeleGPS unit handy today? I would love to get an exact measurement of the antenna length. I am at a multi day launch, and I ripped mine off mid flight. Thankfully I have a battery soldering iron and the proper wire, but need to know the length. Thanks!
  19. watermelonman

    antenna primer

    I have a few GPS units that have simple wire stick antennas. They work well enough, but I have been thinking about upgrading the signal as well as hopefully adding some flexibility. I think I have seen various combinations of RP and SMC in abbreviation form. I am not sure how having a real...
  20. watermelonman

    older telemetrum

    I got an older Telemetrum, hardware v1.2 I think, for cheap. Awesome, I thought! Then a friend expressed some concern at the older units, said the newer hardware was much better overall and more reliable. I do not mind losing some features, but accuracy and reliability are important. What...
Back
Top