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Frank Skilbeck

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Everything posted by Frank Skilbeck

  1. My Daughters 14 month old Corsa E was £17,000.
  2. Just for comparison, a litre of diesel contains roughly 10 kwh of energy, so a gallon 46 kwh, so the equivalent would be around 220 mpg if it used the stored energy as efficiently as the EV.
  3. Anybody remember the old Stanley cardboard aircraft, I had the apprentice with an OS40FS about 40 years ago. Was quite a robust model and flew well. BTW these drones are Australian.
  4. Needs leaning out a bit, but have you heard a fullsize 🤪
  5. Managed to maiden the 1/3rd scale one photo'd above, here's the video proof.
  6. Ron re Octopus Intelligent have you checked if your wallbox will work with this then you don't need the car API. Just replaced our 19yr old Colt with an 18 month old electric Mini, what a hoot to drive and insurance only went up slightly which was a big surprise. Hiccup fitting a wallbox as the Octopus fitter found we are on a looped supply and the main fuse support board had disintegrated, network company coming next week to repair. As for battery recycling, apart from the 1st gen Leafs I understand battery failures are very rare, the main recycling is from accident rightoffs, but they end up in classic car conversions. BTW we talk about battery failure but it's not unkown for ICE engines to fail, friend had the DSG gearbox go faulty in his Fabia, he ended up replacing the car as repair/replacement was expensive. Anybody remember the issues a few years back with dual mass flywheels.
  7. Loved my Twinjet, I upgraded to 3s lipo, extra power made the.motors run hot and the hot glue I'd used to fix the motors give up, one motor came loose and chopped away at the back end of the wing, didn't end well 😚
  8. It's not a win for the oil.companies at all they would prefer to sell you what they produce, ethanol is derived from crops, it's government mandated as it's deemed less environmentally damaging as the CO2 released on burning is reabsorbed when the crops are growing. BTW got an old Kalt 23cc with a WT 705, fired up when petrol was squirted down the carb but wouldn't pump fuel, got a kit from garden equipment spares ebay shop for £4.25p will be servicing the carb next week, wish me luck!
  9. 13mph gusting to 17mph at lunchtime according to Xcweather
  10. Not quite identical, the DS 12 has 1 x 2.4 module with dual aerials and 1 x 900 mhz module (the hardware is there but has to be activated by online purchase) the higher up sets have 2 x 2.4 modules each with dual aerials plus the 900 mhz module, but in my reviews I couldn't detect any difference in performance with the DS12.
  11. I've tested the DS12 and several of it's more expensive siblings, they are all great. The only negative point IMO on the DS12 is the lack of side sliders, but I have seen aftermarket knobs for the corner rotary controls which make them operate more like sliders.
  12. Started with a Futaba 27mhz set, had some issues and it had to go away for repair a couple of times, so when upgrading to 35mhz I went with Fleet as they were close to where I lived at the time, first a Custom 3 then a PCM 7 set, both gave 10+ years of sterling service, then wanted model memories as my fleet expanded so went back to Futaba with FF6, then needing 7 channels got a Multiplex Cockpit Sx, programming was much superior to the FF6. Entered into 2.4 with a Dx6i in around 2009, still got the set and apart from the trim rockers and roller its been fine. Got a Multiplex Royal Pro 9 channel 2.4 when they first came in with several telemetry sensors, then a Profi back in 2014, both still in regular operation, Profi has more than 1000 hours on the clock. Still have a couple of models on 35 mhz with the Cockpit Sx and a 2nd hand 3030 I'd acquired. Too many multiplex receivers to consider a switch at the moment, but Jeti and FrSky would be on my shortlist.
  13. Yes, but these engines use an alternative charge method so no air/fuel passes through the crankcase. The one stroke state that exhaust velocity is such that in creates a partial vacuum in the cylinder which draws in fresh charge, theres a review of it Here Back in the seventies, before Norton Villiers went bust they were working on a stepped piston twin cylinder two stroke, look up Wulf engine, with modern fuel injection it would have been very clean.Frank At university one of our engine test bays had an opposed piston two stroke tank engine which used a combination of turbo and mechanical supercharger to feed the engine.
  14. Only if the crankcase is used to charge the cylinder, modern fuel injection also stops unburnt fuel escaping in the exhaust. These engines are usually fed by a supercharger/turbo so the crank is lubricated just like a 4 stroke.
  15. The major manufacturers have been known to release faulty sets, this is a set supplied with a small lightweight foamy rtf model, yes they don't always feel great but in my experience they do work ok. As for muscle memory I've test flown models with quite a few different transmitters, including some with swapped trims, as long as I'm aware of the set up it's ok.
  16. Yes if they are air up, spring down, but the main wheels on my mates 190 are air up and down and they lock in both positions, we use a Jettronics solenoid valves for operation and that has the option to isolate the pressure after operation (in case of leaks). We did that initially and it worked great on the mains, just a shame the tail wheel wasn't locking too 🤔, changed the operation so it keeps the pressure on and all is good now. Glad you've got on top of the problem.
  17. You note that if the pressure is low then the right leg would collapse, do the legs not lock down. Many of the systems I have used have mechanical which needs air pressure applied to "unlock"
  18. Yep this is possible on quite few transmitters, a clubmate does this on his Futaba tx. Once you are aware of it it's fine, much easier to handle than random reversed trims that another clubmate managed to program in.
  19. Lots of chuck gliders, but first real build was a Kiel Kraft Dolphin, probably when I was around 12, it flew really well, then a few more FF gliders and rubber models and a diesel.control line, but we never got the engine to run. on starting work after university, I bought a Cambria Capstan to go with my 4 channel 27 meg Futaba set, quickly followed by a Cambria Instructor with a HB25 which I learnt to fly RC in the early 80s with the Woking club.
  20. Yep, been making them for ages, the housings and pins are all available from RS Online, and various model shops also sell them, but you need the crimping tool, eg https://www.fighteraces.co.uk/product-category/airframe-accessories/wiring-connectors/ And https://www.4-max.co.uk/maxloc-connectors.html
  21. Do you mean this one https://www.cambrian-news.co.uk/news/helicopter-forced-to-make-emergency-landing-in-arthog-field-629338 , the locals housed and fed the crew. Or has there been another one.
  22. KC no it was an Open Tx transmitter. But it was fine when he was doing the adjustments, it went to full throttle when he subsequently plugged in a fully charged battery. But also I've quite often seen models with an inappropriate set failsafe, so if the radio interups the transmission when entering setup the rx will go into failsafe.
  23. Ken, no 4.2v per cell is fine, just don't store them at that voltage, fine the day before you go flying, but not for weeks. If you're not going to use them for a while set your charger to storage charge and it'll charge/discharge them suitable for long term storage.
  24. Ken, youi want 220 ma for.a 1/10 C charge on 22ma, but for Nimh batteries when they are fully charged there is then a small voltage dip and this.what the.smart chargers look for, but 220 ma is basically a trickle charge anyway. As for.the.lipos then.yes, but the minimum voltage will depend what load you put on them, 3.8v per cell off load is fine, but under load the voltage will drop below this well before the battery has run down any appreciable amount. On charge your smart charger will automatically restrict the voltage to 4.2v per.cell. It will charge at 5A and once the cells reach 4.2v start reducing the current the lipo being fully charged when the current gets to.0.1A. It's a good idea to balance charge the Lipo to keep the cells balanced.
  25. If it's a bigger plane then Sub C cells suffer from less voltage drop under load, but for 5 standard analogue servos it's maybe a bit of.overkill.
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