Jump to content

Frank Skilbeck

Members
  • Posts

    5611
  • Joined

  • Last visited

  • Days Won

    1

Everything posted by Frank Skilbeck

  1. Well I ran mine up a couple of weeks ago after it hadn't flown for several months, choke on, spin the starter and it fired, choke off and restart and it ran great all day. Not the most powerful but OK to pull my 7.5kg Privateer around just fine. The exhaust is very hot and silicon extension pipes don't last more than one flight.
  2. If you are looking for an actuator for some unusual function, this shop is worth checking out, https://www.robotshop.com/uk/ we wanted a 140mm Acutonix linear actuator (to open and close a canopy). Good service it arrived in a couple of days from their EU warehouse UK tax paid.
  3. I had a Super 60 many moons ago, it flew on an Irvine 25, PAW 35 and a Mk1 OS FS40, the OS was the nicest of the lot, I used a 12 x 5 prop on mine.
  4. You just waggle the rudder and the airflow does the rest..................................
  5. Yes, but if you go for an alternate then it would be best to replace them both so you have a matched pair. The specs of the E-Flite servo are nothing special, But if this a gyro stabilised receiver then a digital servo would be recommended as the servo refresh rate from the receiver could be too high for an analogue servo. Maybe something like this https://www.4-max.co.uk/servo-4max-4M-556DMG-087.html
  6. I've got an older version of something similar to this (no display), works well and cuts off after the cells are charged. You can tell how old mine is, it has a switch to change between Nicd and Nimh.
  7. Friend has got one, no issues to report. My Royal Pro (and another friends) also have them and they have been fine (but we do carry them in a case). While they look vulnerable, in practise they are fine and they are very useful, as are the side mounted buttons. The rear rollers are the thing I find strange to operate.
  8. I have quite a few two strokes (and some four stokes) that hand start easier with a reverse flick. I've even seen an engine started this way by finger spinning the spinner clockwise.
  9. It's more that the long servo cable acts as an aerial, the position signal is quite a weak signal, so any stronger electromagnetic field could corrupt this signal, same with the electronics in the receiver/servo. So while highly unlikely it's not inconceivable, it would also depend on if the ESC has been designed and tested not to produce electrical "noise". https://oscarliang.com/ring-esc-ferrite-ring/
  10. If this is your first composite glider, you may want to add a bit of ballast to your Heron, the composite models don't lose energy as quickly as the foamies, even the good ones like the Heron.
  11. It's not just now, the effect of CO2 on temperature was first discussed over 100 years ago, but it's only since 1960 have we accumulated enough in the atmosphere to exceed natural cyclical levels, and it's increasing exponentially. https://www.climate.gov/news-features/understanding-climate/climate-change-atmospheric-carbon-dioxide Exxon scientists knew this in the 1970s and Exxon management at the time took steps to "discredit" the science, Exxon are being sued in the US by several states, i.e. https://www.usnews.com/news/business/articles/2022-05-24/exxonmobil-loses-bid-to-nix-climate-change-lawsuit#:~:text=May 24%2C 2022%2C at 1%3A47 p.m.&text=BOSTON (AP) — Massachusetts',play in causing climate change.
  12. Except they didn't, there was one paper that over estimated the effect of aerosols and particulate matter in the atmosphere, to such an extent that it had a bigger cooling effect than CO2 warming, wen combined with a switch to nuclear power could lead to global cooling. Subsequent studies/papers showed that the cooling effect of particulate matter was much less. https://arstechnica.com/science/2016/06/that-70s-myth-did-climate-science-really-call-for-a-coming-ice-age/
  13. I would agree on a high aspect wing around 4m is a good sweet spot, not too big to transport and launch and more forgiving than a 3m one. A while back a couple of flying buddies bought a Ventus and Discus from Top Model CZ, both very nice and fly well, around 3.8m. Theirs were pure gliders though so I'm not sure if they do an electric option. Keep you eye on the BMFA and BARCS classifieds some of the older moulded gliders come up from time to time, we recently acquired a 2.85 Multiplex Kranich and 3.3m Simprop Solo, the Kranich flies lovely, not yet put the Simprop together but no reason why it shouldn't fly as well.
  14. Boyles and Charles law, but your increase wasn't 20% as the pressure we measure is gauge not absolute, in absolute terms the pressure went from 65psia to 73 psia, still a 12% increase and as the temp went up by roughly 10% (Deg Kelvin) that's about correct.
  15. Erflog, I don't think that is true, I have ordered from EU companies and the goods have arrived with no EU tax applied. It appears that it is only HK that can't get itself sorted for paying UK tax and has decided that shipping from the EU warehouse to outside the EU (i.e. with no EU VAT) is not worth the effort. As an EU business then HK EU will pay VAT on goods they import and then charge VAT on goods they sell in the EU, but in their accounts they can reclaim the VAT they paid on the goods when they arrive at their warehouse. So lets say they receive one item worth 100 euro, they would pay VAT based on this value, if they then sell that within EU the for 200 euro they would charge VAT based on that value. But as an EU registered business they can reclaim the VAT they have paid when they imported it.
  16. Quote from the article "The technology utilises ground-based sensors installed along the highway which provide a real-time view of where drones are in the airspace. This data is then analysed by a traffic management system - a sort of air traffic control for drones - which guides them along their routes and avoids collisions."
  17. Murat, nice engine, note it's a 2 stroke not a 4 stroke.
  18. So sad, never met Alex but always enjoyed his musings in the mag.
  19. Years ago I had a biplane a bit larger than the Flair Se5a, it was initially powered by a Webra Speed 40 with a 10 x 6 screaming away, it was slow to take off, as I also had an OS 40 FS (the very first type), I change the prop on the Webra to a Graupner 12 x5, the model flew much better but the webra wasn't happy on that prop so I put the OS40FS in it and it flew like that until a flat receiver battery caused the models demise a couple of years later. Still got the OS40FS and it's in a mates Junior 60 pottering around at 30% throttle.
  20. Check out the SM Modelbau Unisens E sensors, voltage, current, mah, height, vario and motor rpm all in one small sensor, I use them with my Multiplex gear and have also used them with Jeti, Futaba and Graupner, they will work with Spektrum via an adaptor (available from SM Modelbau). Only available direct from SM Modelbau in Germany, but the two I ordered last year (I have 5 of them now!) came pretty quickly
  21. I didn't think this was a show, but a flyin, where you fly to your hearts content with like minded others, not a fixed time slot where you have to put on a display for the paying public. I go to the glider aerotows and a typical cost for them is £10 per day and no lunch, great days out and worth every penny.
  22. Early days yet, but I bought some ZOP batteries earlier this year, a 6s 3700 mah for an EDF (96amps WOT!) and a couple of 4s 3200 mahs, so far they seem OK, but haven't had more than 20 cycles on them. I've also got some Overlanders and Purple Power (4max) and they are performing well too.
  23. Not quite as bad here, but the crop of oats in the next field is just about ready to harvest and is very dry, but our farmer hasn't raised any concerns. Never any harm in promoting goodwill, and if our field yesterday was anything to go by then the glider pilots should be enjoying booming thermals. One thing that might allay the farms fears is your BMFA insurance, so worth checking if crop damage caused by a model fire would be covered.
×
×
  • Create New...