Search results

  1. Mactadpole

    R&D Hex for Survey/Imaging/Conservation

    Been using silver solder forever and not had any problems myself. Guess I'm lucky.
  2. Mactadpole

    R&D Hex for Survey/Imaging/Conservation

    Agree with Moto on the power wires with plenty of stress relief. I have also been coating all the connections on the PDB with a thick layer of liquid tape but this does prevent you from checking the actual solder joints. I mostly look for any damage to the smooth liquid tape surface. Maintenance...
  3. Mactadpole

    R&D Hex for Survey/Imaging/Conservation

    I just realized we've been doing calculations based on a single 16000mah 6s battery from Tattu. They don't offer an 8000mah, all I see is 10000 from them. Might want to go back and see what that changes in eCalc. Think I used 16 or 18 on my wires. I'll check later for you.
  4. Mactadpole

    High current melting solder on PDB

    I didn't modify the 90A for my use so can't really comment. But I can tell you that have pushed ~100A through the 90A for very brief moments during testing with no issues. It is a very rare occasion (if ever) that I would peak 90A. I think the same for your build too.
  5. Mactadpole

    High current melting solder on PDB

    Its the power module is my guess. I have had the exact same thing happen when I decided to try one of these cheap ebay power modules. I think it failed at like 60A max, resulted in about $1k of damage. I highly recommend you build your own...
  6. Mactadpole

    R&D Hex for Survey/Imaging/Conservation

    On the 5v feed from BEC to the pixhawk rail you need to include a Zener diode to condition power. See bottom of page here: http://plane.ardupilot.com/wiki/common-autopilots/common-pixhawk-overview/ and another helpful link...
  7. Mactadpole

    R&D Hex for Survey/Imaging/Conservation

    Yep. I certainly feel as safe as possible with this setup. I have compared both against a Whatsup meter and the frsky inductive sensor is much more accurate.
  8. Mactadpole

    R&D Hex for Survey/Imaging/Conservation

    Some answers for you: 1. I use an adjustable BEC (built into PDB board) to power the gimbal without a filter. 2. 1)It depends on how you feed the battery power to the PDB. Solder both battery wires together and then to Attopilot and you get it all through there. I don't like this setup because...
  9. Mactadpole

    R&D Hex for Survey/Imaging/Conservation

    For what you get I don't think its too bad of an option. You could always get the Vulcan gear rail system to put on the copter that it would clamp to - http://www.rc-drones.com/Vulcan-12mm-Rail-Mount-System-with-Rails_p_658.html Been toying with the idea of doing this myself and getting the...
  10. Mactadpole

    R&D Hex for Survey/Imaging/Conservation

    I would wait until you get it. Although I don't think need to worry much about throwing off CG because you are going to have to mount it in the center of the bottom plate regardless. The only thing to keep in mind, it was mentioned earlier in the thread I believe, is that it is difficult to work...
  11. Mactadpole

    The Future of Propeller Technology

    How do these perform in wind? I did a test flight with 16 x5.4 beechwood props and really didn't see much of a difference from the 15x5.5 CF I have been flying. Hoping I would get about the same out of a set of these. Edit: found reports elsewhere that the triple-props show better stability in...
  12. Mactadpole

    R&D Hex for Survey/Imaging/Conservation

    http://www.himodel.com/plane/TOMO_Series_15x_5.5_inch_3K_Carbon_High_Efficiency_Propeller_Set_one_CW_one_CCW.html same place I got the wood props.
  13. Mactadpole

    R&D Hex for Survey/Imaging/Conservation

    Here's a pic with 16" props on 400mm arms. Sorry I didn't have the props tip to tip but there is plenty of distance between them. I got in a flight today and these made a huge difference in vibrations. I have been studying the 15" CF props I have and they are just terrible, even the props tips...
  14. Mactadpole

    Hoverfly New Hoverfly Forum is now open!!

    Just following the big money trail I guess. Can't blame them for that.
  15. Mactadpole

    R&D Hex for Survey/Imaging/Conservation

    You can easily put 16" on those 400mm arms. I'm doing it. Try ecalc with the 3520's and 16" props to see what you get. Keep in mind you will never be running at full throttle. Do you live in a hot part of the country though?
  16. Mactadpole

    R&D Hex for Survey/Imaging/Conservation

    Maybe yours are better than mine. I have literally added a whole bottle of CA to one side of a hub just to see if that would get it balanced. Nope. so I then started adding bits of small steel wire (2) with the CA and still not balanced.
  17. Mactadpole

    R&D Hex for Survey/Imaging/Conservation

    I think its an excellent suggestion to just get some APC's to start with. Easy to balance and reliable. I just decided after being part of this thread to order some APC 15 & 16's to see how they do. FWIW - the cheap CF props I have gotten have a variable qualities of surface finish and most...
  18. Mactadpole

    R&D Hex for Survey/Imaging/Conservation

    Thanks for link! Look at the eCalc screenshot on previous page with the projected AUW and 15" on the U5 it has you hovering at 50% throttle.
  19. Mactadpole

    R&D Hex for Survey/Imaging/Conservation

    Do you have a quick link to those?
Top