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Showing content with the highest reputation on 14/12/21 in all areas
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Might have flown my last day of 2021 today. Just me and my buddy tutor on a boggy car field, but the flight strip was wet but ok. A 1,000,000 curious sheep can to see us. Managed to use 4 batteries down to about 30% with a horizontal sock, about 6 mpg and gusting. Take-off were good, bit steep as the wind lifted the light plane, but flew round and round, figs of 8 and then a landing. It came down a treat, no bangs or bounces, no testing of recent glued repairs, and NO buddy interventions. 2 and 3rd flights the same though the gusts were tricky close to landing, but corrected and survived, plane intact despite a bit of a bounce (or 3). So, the end i think (might try on thursday) to my first year as a rookie. Nearly 60 years between my last flight (control line) in the village park to facing the real challenge of R/C. It has been brilliant, hard at times, but when it all works, what a great way to spend time, so pleased I finally got to get going again. I have learnt a lot and have many to thank including all the help here on this site. I wish you all a Happy Xmas, and a Very Good New Year full of smooth landings no matter what.6 points
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Everything put together today bar the propeller and the total weight without balancing is 23.15lbs/10.5kg Very difficult to check CofG as I shall need to set up a proper rig of some sort or get hold of some digital kitchen scales and use the weighing at each wheel etc technique. However at a guesstimate it is about 1-2 cms aft of where it needs to be. Batteries currently placed behind the firewall. So to move the balance forward I could install the two batteries further forward either side of the engine box, or is this unwise due to the heat in that area? Also the cowl fixing is very secure, so some flat strips of lead could be added inside the front lip giving the longest possible moment arm. Thoughts appreciated.2 points
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Jon Well done on the wire bending. Looks very professional. Also, good prep for the calibrating the weight and CG movement issue. It will come in handy I'm sure. Peter1 point
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We had a similar problem with cars doing burnouts on our old tar and gravel runway, it was cured by 'roughly' rounding up the end of steel used for reinforced concrete hammered in the grass at the edges of the tarmac at the entrance and leaving a couple of centimetres sticking out,,,1 point
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I wish i had space. i would build a square comet tomorrow, along with 3 spitfires a zero, 190, 109, p51, p40, 2 sopwith pups, an se5a and a fokker triplane. i need more room or fewer projects, and one is never going to happen. Anyway my pulse 125 conversion is great with twin 70's at 76inch and i think 13lbs. Given the more sturdy build of the galaxy models i would go twin 80 for more speed ?1 point
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Bas - None taken, all inputs gratefully received. My own opinion is that the benefit of the Forum is that because of the feedback we all get better at what we do.1 point
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The way I solder those threaded extensions is simply to clean and tin the piano wire and drop the extension onto the wire and apply heat. You'll see if it's well soldered by the neat concave surplus solder at the joint. I have a solder sucker but I only use it for electronic component desoldering - with other stuff I just heat it whilst holding with a pair of pliers and give it a good shake. OK, it sprays solder over the floor but I've been doing it for more years than I wish I could remember without a problem - the molten solder is probably semi solid before it reaches the floor anyway.1 point
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Hi Dirk, Apologies but I missed out for a few weeks. Hope you will both be fully recovered soon now. The AMOTY Trophy is the very 'least' you can be awarded with your dedication and skills... Cheers Chris1 point
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A bit of a farcical end of the season for sure, but that 's nearly 'history' already... ... some rules & procedures need to be corrected/amended by the FIA of course. But maybe this is just 'wishful hoping'. Congrats to John S for 'overflying' this year's Fantasy league and to Tony Clark for completing the podium... and, of course, a big 'many thanks' to John P for his superb admin job during the season. For those interested, here's my team 2021. Just like John S, no changes at all during the championship > Max - Gasly - Giovinazzi Red Bull - McLaren - Alpha Tauri Hope to see you all - and hopefully even more participants - in 2022... Enjoy the upcoming festivities Chris1 point
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Well done Jonathan. I can confirm you'll have a very nice model to fly when you finish. I've had a few flights with mine now and it's a beauty.1 point
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You don't need a resistor. All you need to do is measure the terminal voltage on and off load for a fair approximation - so just run the motor. The IR is given by the voltage difference divided by the current.1 point
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Proper job Stephen! I also really like it when people insert spaces between their photos - makes the visuals much easier to read than continuous reels! ?1 point
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Many Lipo chargers will measure the IR of packs and individual cells for you, I know mine do. I can’t confirm the absolute accuracy of the measurements, but they are repeatable so are adequate for comparing packs, or for monitoring a single pack over time. Have you checked the manual for your charger? When you say “appropriate value for 6s lipos” do you mean the IR of a 6s pack, or a suitable resistor to provide a load for measuring IR? A decent 6s Lipo should have an IR of about 20 mOhm, and my very old well used packs are between 40 and 45 mOhm (but don’t forget IR is variable with temperature and state of charge as well as age). If you mean for a fixed resistor load on a 6s Lipo then something in the 25 Ohm 25 watt to 12.5 ohm 50 watt range would work, or just put a couple of car head-light or tail-light bulbs in series. You need to measure the current and voltages anyway. Dick1 point
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@Graham Davies 3 The finished article, sorry it took longer than planned, had a family issue that delayed things @Alan Hiltonprinted 4 off for you Alan1 point
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Congrats John Stones for winning the league with a score bigger than Toto Wolff’s blood pressure numbers and worthy mentions also to Chris McG and Tony Clark for second and third. I was hopeful I might snatch a podium place, but like Lewis defending from Max on worn tyres on that final lap, it was ultimately just out of my reach. Kudos to John P for running the league in such an accommodating fashion - not only providing such a competent and thorough score update service, but even going the extra mile to finish way down the table in deference to others. You’re a gent John. How will history judge that season finale? It will be spoken of in the same breath as São Paulo 2008 but will be more hotly debated for sure, as whatever your bias you can find a way to argue how it might’ve turned out differently. The “what ifs” will be endless. I think when the noise dies down it will be seen to have been good for the sport overall, but I could be wrong! Whatever else comes of it, I hope the FIA team learn some lessons and improve. FOM TV broadcasting the chatter between Masi and the teams has shone a light on some weaknesses this year, and haven’t we missed Charlie Whiting? Whether everything was done fully correctly or not in the Whiting years, at least he managed to maintain an image of authority and decisiveness. Thanks all for playing this game, I’ll be back on it next year ✌️1 point
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I saw this on-line. I found it interesting. Perhaps some of you gentlemen might find it interesting too. John Gordon Fletcher, born in Dundee, Scotland, lived in France before the 1914-1918 War, apparently serving in the French Army before the war broke out. He joined the British Army in the Great War and after the war settled in Albert in Northern France where he worked in the aircraft factory at Meaulte. In 1921 he married a French girl. He was arrested by the Nazis in May 1942 and died in Auschwitz on 8th July 1942. I know Albert and Meaulte well. Albert was the forward headquarters of the British Army on the Somme throughout most of the Great War and I have visited it many times when doing the Great War battlefields. There is still a big aircraft factory at Meaulte which makes parts for the Airbus. I have seen a "guppy," an Airbus modified to carry the wings of Airbuses, take off from the flying field by the factory and I believe that the German airforce may have occuppied the flying field briefly in 1918. Must take the dog for a walk then get both of us some breakfast. The article below published in Dundee's local paper, "The Courier," explains things better than I can. https://www.thecourier.co.uk/fp/news/dundee/2544245/forgotten-victimofholocaust/?fbclid=IwAR0_Zdcrc7kbArwqiBhO9vpqtpHU_v2ekOFRq_Ljf-s2sjhHPe6zRosxH5Q1 point
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I'm on a bit of a 'stick and tissue' roll at the moment. Just finished this KK Cadet from an old 'cut out the bits' (they weren't always the good old days) version. Will tow it up next Spring and see what happens.... ?1 point
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Could the battery and ESC strap to the fuselage in front of the LE? Reinforced with1/32 ply either side with slots for the straps to go through? At this size there will be no need to take it apart for transport, as I found with your Swizzle Stick (40") and very low rates will turn it into a docile fun model.1 point
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At this stage I am trying to work out the installation of the electrics. The power system is one of the £25 package deals of motor, ESC,Ptops and three sevros from 4 Max1 point
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The two halves are joined now and i started to lay down the connecting ribbons glass cloth. At the seam comes a little worm of thick resin so the liquid resin has more resistance to get between the moulds.Next comes 3x100gr to reinforce the seam. x x x x x1 point
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For washing down I use soapy water with a dash of white vinegar! Seems to deal with the oily residue OK. S1 point
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I know this is a very old thread, but I still have and fly my Jumper 25. It's a great little flyer and I have it now 7 years and still going strong. It's got the same original engine in it, a Saito 40 which sounds lovely as it cruises around. I use 4 inch white rubber bands and keep them in talcum powder which preserves them for a while.1 point
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I'm so sorry I totally forgot about this thread. I finally sorted out the elevator mount out by soaking in acetone, the rest was just finishing off covering etc1 point