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Tim Ballinger

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  1. Tim Ballinger
    Just thought I would post my results of upgrading to the latest FrSKY OS ( TX & Rxs) on my HORUS X10. The Tx upgrade is now at 1.3.07 and the Rx firmware at V2.01. I use the Horus OS not OpenTX. I upgraded 8 Rx's 4 RX8Rpro, 2 RX6R, 1 RX4R and a GRX8R and of course the Tx. Upgrade process was as per manual and no problems. I had held off until now as the G series Rx's were the last to be updated/released following Beta testing in March/April . (S series are not there yet but I have none) My flying site is still in lockdown but I can fly anything without an undercarriage from fields next to my house. Hence flight tests completed with a glider using both the GRX8R and the GRX6R. I will flight test the RX8Rpro in the glider as well but as soon as the wether is good enough. Yesterdays weather was brilliant for thermaling so I had 2 flights of around 20 mins each up to heights go 650 feet on which to collect data. All went well with no problems or discernable difference to pre upgrade flights. Detail telemetry pictures and comment to come in the next post. Tim
  2. Tim Ballinger

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  3. Tim Ballinger

    Tim Ballinger posted a gallery image in Member Albums

  4. Tim Ballinger
    Geoff, Its an Overlander Thumper 3548/05 . I test ran it at the weekend:- newly charged 4S , 10,000 rpm, 60A at 14.7V giving me 882W . I used an 11x8 wooden prop. Thats pretty much max allowable so I may drop to an 11x7 and see if it takes the top off ! I suspect there will not be too much max throttle to begin with as it came out under the target weight at 4lb 2oz (1.872kg). Frustratingly our field is still closed . Tim
  5. Tim Ballinger
    Peter/Geoff, Thanks for that. Tim
  6. Tim Ballinger
    Great stuff Geoff, still waiting for my club to open up and I will be out with my new Oodelallay as well. Just setting up my control throws . No info anywhere I can see , what did you use ? Tim
  7. Tim Ballinger
    I have monitored this situation pretty closely since it started in January and have decided in recent weeks that the time is right for me to undertake the upgrade. I do not use stabilised Rx’s so those remaining issues do not bother me. I have had no problems at all in 2 years of operating my Horus X10 so my motivation is simply to keep up to date and remove any minor risks of the sort noted in Germany. I have under a dozen separate Rx’s so the task , for me, is not immense. I plan to start the upgrade next week while I am waiting for my club to reopen . Tim
  8. Tim Ballinger
    Peter, Thought you would appreciate it. Tim
  9. Tim Ballinger
    My version of another Peter Miller classic.
  10. Tim Ballinger

    Tim Ballinger posted a gallery image in Member Albums

  11. Tim Ballinger

    Tim Ballinger posted a gallery image in Member Albums

  12. Tim Ballinger

    Tim Ballinger posted a gallery image in Member Albums

  13. Tim Ballinger
    Lucas, I used my iron at 127 deg which is actually the temp I use for tacking the film in place normally . Seems to stay stuck and does not deform the canopy. I use a glove on the iron and do not loiter. Go hotter at your peril ! Personally I glue the canopy in place first, then add the trim. Tim
  14. Tim Ballinger
    And hooking your finger through the cheat hole to push out the hatch attached with magnets makes life really easy. Tim
  15. Tim Ballinger
    Lucas, Provided the dry run on the bench and a trial fit is good the gluing in place is easy. Tim
  16. Tim Ballinger
    Lucas, I never bothered with a fan hatch. If surgery is required so be it, I have a saw and a knife! Tim
  17. Tim Ballinger
    Chris , looks like you have it. So your setup qualifies for this parameter due to a low KV and 4S voltages or below. Your last set of results seem to indicate 5S was ok with 50 % ramp up and low rpm on ( ie default) but I thought you had a problem on that combination originally. Perhaps the difference was having a prop on ? Anyway good to know how to sort it when/if w meet the issue. Tim
  18. Tim Ballinger
    I guess start up amps might be higher on the lower voltage but your indicated value of 7.4 A makes a nonsense of that idea. interested to hear any further test results. Tim
  19. Tim Ballinger
    We all have those moments !
  20. Tim Ballinger
    I guess I can see the ways to fix the problems described but the overall logic still escapes me. if I understand correctly everything is fine on say a 5S setup. You change to a 6S and all is fine. You change back to a 5S setup and all is not fine. No changes to the ESC parameters involved. You increase the ramp up value and 5S is now fine again. Did I miss something? As described the ramp up setting should allow the motor to reach max performance at some point, unless it is current spiking all the time with peaks at least twice the ESC rating ( which it was not doing the first time it ran on the smaller battery). Very 🤷‍♂️
  21. Tim Ballinger
    Only just noticed this. I guess I could look in the blheli manual but what is the purpose of the ramp up power setting and I am reading this correctly that the value gets chang3d when you change the pack size? Tim   Edited By Tim Ballinger on 11/04/2020 16:20:52
  22. Tim Ballinger
    Lucas, what is clear is that thrust to mass ratio is crucial with all the mini jets. The gnat is perhaps the leanest but still needs max thrust to get away from a hand launch in light winds. I spent some time testing with larger cheat intakes to get the figures I quoted. I only managed 2 sessions between flooded fields and virus lockdown but it flew away with virtually no dip. Can not help much on the glue front except to say that a couple of folks have had the fan come loose when it belly flopped following a failed launch so make sure it is secure. I used multiple hot glue blobs . Timz
  23. Tim Ballinger
    Lucas, sounds as though it could be a bit marginal to me. My static tests gave me 42A , 600g thrust at 49000 rpm ( the rpm figures in the static test I showed in the build blog were out by a factor of two as I confused poles and pole pairs when calibrating the rpm sensor). Those figures were with a newly charged 40C battery. I’ve seen others measuring 38A but not sure of the battery status. Tim
  24. Tim Ballinger
    Barry, Glad you seem to have sorted your power problem. I assume you are concluding that the original 4S fan was faulty? Interesting that the blades are interchangeable, I had assumed there would have been a pitch change as well as a KV change between the motors but it does not seem so from your comments. Did you measure the max current as an insurance ? Tim
  25. Tim Ballinger
    Nice model and even more luxurious modelling bench ! Tim
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