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danny_galaga

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Everything posted by danny_galaga

  1. danny_galaga
    Im pretty sure I know which plane this is and have talked to the pilot a number of times, nice fellow. If him, it's a Rotec powered biplane. Glad he's not seriously injured. https://www.abc.net.au/news/2024-09-17/light-plane-crash-scenic-rim-boonah-airfield-queensland/104360076
  2. danny_galaga
    Did you end up mounting them NOT on the engine, or just reused the original mounting bracket?
  3. danny_galaga
    Picked up the plans for the club racer today. This is the OS 15 I got for my 12th birthday. Looks a little sorry now. But some WD-40 and an old toothbrush should make it look a little more respectable 🙂
  4. danny_galaga
    I don't have direct experience with them, but these aftermarket 912 ignition modules have been praised by various people https://www.ignitech.cz/en/vyrobky/bikes/rotax/rotax_912_and_914/rotax_912_and_914.htm They also have enough wiring to mount them NOT on the engine, just like they should be in the first place 😄
  5. danny_galaga
    So the 'club' racer is a slightly reworked plan of the 1940's KK Phantom . I will pick up a plan from them this Sunday. It will be ages before I build it, but in my spare time I can get a kit of parts ready. I'll make patterns for the main parts as I'm pretty sure I'll build at least 2. The first is the homage to Dad and 12 yo me, and will be quite standard. Once I've done some flying with that one I'll know how to finesse the next one. The one in the photo I think has something like an ED 2.49 or similar diesel. They are quite potent and like full size diesels have a better duration so great for team racer or similar. I'm using my original OS .15 glo which might be roughly the same power but of course will have a higher fuel burn rate. I'm going incorporate the name Cherokee as part of the homage. But not on its own. Any ideas? It can be corny because , well I'm 12 yo again ☺️ For instance Cherokee Dream or Cherokee Spirit
  6. danny_galaga
    Safer too. If you went to a club they won't even allow you to use the old radios. There is a trend, which I think I might do for a 2 channel model I want to build, where people buy really old radios, particularly metal bodied ones like Futaba etc and then install modern radio internals. Great for Old Timer etc because it just adds to the retro look of it all. A 30 year old radio is in no man's land however - too old to be considered reliable but not old enough to have any vintage appeal.
  7. danny_galaga
    That's great, but I find some local businesses are a pain to deal with. Despite your experience, my favourite people generally to deal with are American. They seem the most service oriented, and genuine competition within their region makes them pretty keen to please. Not necessarily just aircraft stuff, although that's been a big part of my life for the last five or so years.
  8. danny_galaga
    Totally agree. Leave it be I say.
  9. danny_galaga
    It's actually quite hard getting genuine Rotax stuff from overseas suppliers. They seem to be region -locked, like a 1990s computer game 😄
  10. danny_galaga
    I haven't looked at it closely but I seem to recall the mounts are stand off, which lets air circulate behind. My firewall is fibreglass, with aluminium covered fibreglass heat shielding, so maybe it's grounded on that but (again from memory) the regulator is potted in a generic heat sink So I don't know if there is even an electrical connection, in other words I have a feeling it's above ground.
  11. danny_galaga
    No. I'm not even sure why they put that earth symbol there, other than to say if you've wired your aircraft with negative earth (that is, instead of having a negative wire going to devices, the battery negative connects to the metal airframe and your device gets its negative from the airframe, like a car does). In any case it's probably best to use wire for the negative of your regulator, not the airframe.
  12. danny_galaga
    Yeah, we are saying the same thing in different ways. Electrically, saying "earth" on DC voltage electrics in cars, trucks etc implies a common "ground" connection, nowadays always negative via a metal chassis, body etc. as you know, that's what is happening in your car. Just saying "negative" doesn't automatically tell you how it's created. That's why I was trying to be really clear. Some cars up until the 1950's had positive ground! Pommy of course 😄 So with my auto electrical background, knowing how problematic earth return/ground/common is on things like trailers and boats, I fully understand and embrace "earth return" wiring in an aircraft. That is, wire carries the current for both positive and negative. No device on my aircraft is powered via current transmitted through the metal of the airframe.
  13. danny_galaga
    The only "earth" on my plane is the negative battery cable going to a bolt on the starter motor rear housing. Everything else is negative wired. The airframe almost certainly has negative potential because something will ground the engine to it somewhere along the way (for instance the throttle cable. Or maybe the Facet fuel pump) but it's not part of the "deliberate" electrical system.
  14. danny_galaga
    You're preaching to the converted. Earth return on everything on my build. My regulator is hooked up directly to the positive and negative of the battery (well from memory to the bus bar) and the heat sink itself doesn't require an earth from memory as you can see from the differences in the two regulator diagrams.
  15. danny_galaga
    It's pretty much ready to fly, the paperwork is taking forever. Here is what $900 odd dollars worth of weighing looks like 😄
  16. danny_galaga
    Agree. In this case we are talking about the CARR5115 regulator.
  17. danny_galaga
    You don't need to ground the case per se as there is a negative lead. I hadn't given that much thought as mine is in a new build so I wired it accordingly. Good question!
  18. danny_galaga
    Its a friggin nuisance. Like I say, the same picture posted on FB will be the right way around. I've lost interest in figuring out why. I'm finding I'm losing interest in a lot of things nowadays, particularly modern things that should just work. Aha. Just tried an experiment. I just did the slightest edit (cropped it a smidge) on the picture and saved it. Didn't rotate it. It now posts the right way around. Editing it seems to change some mysterious Android -y info that turns it around on this forum.
  19. danny_galaga
    I have a picture of my first CL model. Very grainy 110 film, taken by a 12 year old so not the best 😄 You'll need to look carefully, it's behind the cats 😄. I'm.sure I took a closeup too, will have to do some more digging. I've decided when I build the K K Phantom, I'll paint it to resemble as much as I can my Aeroflyte Cherokee. I can do much better paint jobs nowadays, but it will be a homage to Dad and 12 yo me 😊 Edit: I rotated the picture. Murphy's Law means I'll rotate it 3 ways before I get it right, so live with it 😁
  20. danny_galaga
    I can't tell where their control line circles are. Took a bit of doing but heres the satellite views of the brissie CL club. Second pic shows the whole lease. That other part is what they sub lease to the dog club. The whole situation is a breath of fresh air from a council.
  21. danny_galaga
    Damn, that's nearly as dense as me 😄
  22. danny_galaga
    Um, probably getting a bit off track there spaceman. But yes it's mostly glow engines, the occasional diesel and some guys are messing with electric. The guys that got this club going some really good arrangements. The field is ex rubbish dump, so no building on it for the foreseeable future. It's also located in an industrial area so no problems with noise. It's also pretty close to Archerfield so no radio controlled models allowed. They have three circles, which is a pretty rare thing nowadays. They have such a large lease, they are subleasing the unused half to a dog club that does that 'chasing things on a wire and pulleys' thing. I call them control line dogs 😄 The dogs don't seem to mind the noise.
  23. danny_galaga
    Eg, a millilitre of mercury compared to a millilitre of air. And put another way, what volume does a gram of mercury occupy, compared to a gram of air.
  24. danny_galaga
    That's quite neat 🙂. Mine just has green rectangles, but then again it's free software so I can't complain about that.
  25. danny_galaga
    Interestingly, the don't seem to be doing combat. They do seem to be doing a club speed class. Every club does their own thing. The idea is everyone builds the same plane, engines are standard. The class they devised is right up my alley. They used a modified plan of the Keil Kraft Phantom, which was originally a trainer from the 1940's. And run relatively modern standard .15 sized engines instead of 1940's .10 sized. I still have my OS .15 that dad bought me for my 12th birthday. It came with an Aeroflyte Cherokee. Model is long gone of course, but this club class racer would be a lovely use of my old engine 😊 Photos at the bottom of this link are from one of the planes at the club. Actually the same guy that made that aerobatic model . http://outerzone.co.uk/plan_details.asp?ID=1397
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