Richard Clark 2

Posted by MattyB on 12/08/2020 11:27:07: Posted by TonyS on 12/08/2020 10:59:47: Looking at the set-up I suspect a big part of the problem is the lack of any airflow in the battery compartment. Worse than that it's a very snug fit in a foam cavity - like a hot water cylinder jacket!! Might be time to start punching holes!! There is a long thread over on RCGroups about this model - might be worth a trawl to see if others have had these issues and if so how they addressed them... PS - I see what you mean about the layout, there can't be much airflow getting to the pack in it's foam tomb... Edited By MattyB on 12/08/2020 11:30:07 It seems to fly very well.

Posted by Steve J on 12/08/2020 10:16:39: Posted by Phil Green on 08/08/2020 21:09:14: You can do it much simpler than that and for much lower cost. You have drawn an H-bridge with relays. Your way will have a servo driving a switch and the limit switches switching the motor current. I would go for an Arduino and an L293 (or other H-bridge circuit if more current is required) which would also allow control of the motor speed. They are not relays as they don't need coils. Merely two limit switches and two diodes (all of which are already there) and a double pole changeover switch and a servo. Even a nine or ten gramme servo will do. As for speed, with screwjacks it will be 'slow' anyway and trying to make it slower it probably won't work at all as such jacks have extremely high friction. As someone who has been a professional 'big' computer designer for over 35 years and am now working on the new 'post electronic' computers I strongly believe the use of a computer, and probably a bridge for something so simple is merely a modern 'knee jerk' fashion. In much the same as a Victorian engineer's first thought would be a steam engine plus boiler

Posted by jimmac on 12/08/2020 09:28:03: Posted by Phil Green on 08/08/2020 21:09:14: You can do it much simpler than that and for much lower cost......... Cheers Phil Thanks Phil and all you other guys for your advice, I can now go and help the owner of them. He isn't too internet savvy to find the help you guys have given. Yes. There is no need whatsoever to faff around with 'controllers' or 'Arduinos' and the like. Buying and figuring out how to program a computer for such a simple task is ridiculous.

Posted by TonyS on 11/08/2020 23:49:37: I’ve a problem. I have a Hobbyking Phazer. It’s a small foamy edf that I use for a bit of fun and flying practice. It was built for a 3s battery or so the sales spiel goes. the last two times I’ve flown it with a 3s 30C 1800 pack, the packs have puffed up and been red hot on landing. ive bought a slightly larger 3s pack that is rated at 60c which I hope will last a bit longer. Would a 4s pack be better at handling the loads or would that simply fry the ESC and motor?   As MattyB says 4S will make it worse. The current will go up, not down. So you have done the right thing in buying a higher C rated battery. But even then, do NOT believe the C rating, as Simon appears to do. It is nonsense, just pure marketing hype. Though a 60C rated battery is likely to deliver the same or a little more current as a 30C rated one of the same capacity due to a lower voltage drop than the 30C one. This may marginally improve the performance even with the battery probably being slightly heavier, and the battery should not get so hot. Edited By David Ashby - Moderator on 12/08/2020 10:27:28

Ridiculously over-cautious seeing it was written in November 2018. I now charge my high C rating cells (mostly  70C Thunder Power ones) at 4C. Thunder Power say 12C is ok. I tried it a couple of times and they stay  at  ambient temperature. Edited By Richard Clark 2 on 11/08/2020 18:23:57

Posted by Keith Miles 2 on 11/08/2020 15:55:58: Yeh, let’s blame the government, club committees, BMFA and those malevolent and irresponsible drone fliers! Let’s also openly announce our intention to ignore the law and risk a fine but perhaps saving 9 quid to buy a cheap servo or, maybe, a Chicken Balti with Pilau Rice and a Plain Nan? And let us never accept responsibility for our personal actions or consider their possible effects on others. Vive le revolution! 😊 Government:: They introduced this futile 'registration'. Futile? yes. Nobody who intends to break the flying rules will put an identifying number on the aircraft. Clubs: The BMFA does not demand you put the number on the plane so BMFA registered clubs shouldn't either. We fly on Forestry Commission land and the FC has said that if we feel there is a problem with people not registering and we wish to report it we should call the CAA or whatever, and NOT the FC. Takeaway orl icence? A purely personal decision. Only those who have never stolen an apple as a child, exceeded the speed limit, or cycled at night without lights should criticise any decision you make. Personal responsibility? Of course. You don't have to tell us, thank you very much. But 'hands up' those who have signed a chit saying they would be responsible citizens in all circumstances. Edited By Richard Clark 2 on 11/08/2020 17:21:32

Posted by kc on 11/08/2020 10:20:12: I said everyone who is in my club had registered with CAA . We don't agree with the law but are all law abiding citizens. The lawbreakers will bring aeromodelling into disrepute. We should advise the authotities of any aeromodeller who deliberately breaks the law by flying and deliberately not registering.......... It's good that none of. you have ever broken the speed limit. What fine fellows you all are. Snitching on other flyers is a fine example to us all. Edited By Richard Clark 2 on 11/08/2020 10:43:18

"What the hell has happened" Things change is all. Some for the better, some for the worse. As it's MY money and nobody else's I also rely on MY opinion and nobody else's I don't spend my money on the 'worse' (eg foamies and ARTFs of any kind) bur I do buy the 'better'. I don't care about 'value for money', only about. 'good'. Registration? It's just more futile government bureaucracy. Futile because most people of malevolent intent won't register. The wiser ones might because then they can practice their future malevolence without being fined or arrested. Neither will put their registration on their aircraft when actually perforning malevolent acts, rendering registration totally pointless for everyone. Did I register? Yes, Because our somewhat authoritarian club committee, elected only   because  they were the only ones willing to be on the committee,  insist on it.  I personally think It's less hassle to pay the £9 than argue with them. I certainly didn't register because I am any kind of 'law abiding citizen'.  Edited By Richard Clark 2 on 11/08/2020 10:27:18

Posted by paul d on 07/08/2020 17:06:27: He'll probably offer you twenty quid but try and sell it for 2 grand after his band of bodgers have dragged there knuckles over it.

Posted by Jon - Laser Engines on 06/08/2020 13:47:26: Posted by Brian Cooper on 06/08/2020 11:52:12: Hey, it's a hobby. . . Who keeps exact records of the expense? Me, otherwise i risk spending beyond my means! I have a credit card card (mostly used only for my online purchases) but I arranged for it to be paid off in full every month by bank direct debit. It's the only 'finance' I ever use. I run my 'financial affairs' such that there is both always enough in the bank to pay both this, monthly stuff such as council tax, and for the bank's magic money machine to pay out up its standard daily limit. Toy planes this year? The only expenditure I've made in 2020 is a Warbirds Spitfire kit at £159, which I probably won't start until October when the river trout fishing season ends. I've got enough model; 'stock' such as glow fuel, glue for repairs, frequent day to day flying, build the Spitfire to 90% complete, etc already and it was all purchased in 2019 so I don't visualise any further expenditure. Far less than usual but I've got too many planes already. Early next year? A Laser 70 for the Spitfire if you've got it in stock at the time I want it. If not OS or the landlord of the local pub will get the money . Edited By Richard Clark 2 on 08/08/2020 02:09:26

Posted by Kim Taylor on 06/08/2020 18:25:29: Posted by Richard Clark 2 on 06/08/2020 15:01:20: , I did buy two brand new Harleys. I was also influenced by though very expensive they are made by people who are paid real wages. Edited By Richard Clark 2 on 06/08/2020 15:05:52 Hopefully not the ones that they manufacture in India then!! Kim No I don't think the Indian made models are very successful being little different from Japanese-made mid size 'cruiser' type bikes.. Harley has problems (yet again). The big ones, though far more technically advanced than they appear and brilliant at what they are designed to do, sell to a declining and ageing customer set, myself included, and are too expensive for anyone except the 'dedicated'. Edited By Richard Clark 2 on 06/08/2020 18:46:05

Posted by Peter Miller on 06/08/2020 14:57:07: I have now watched the whole thing. What a load of...... I shall never waste time watching "The restorers" again Oh! Can I interest anyone in buying some of my models at a give away price of £750 each!!! No restoration needed!!! Edited By Peter Miller on 06/08/2020 14:58:19 Naah. You are not as famous as Boddington. Who for some unknown reason suddenly 'rose without trace' fully formed and without even wearing a dress held together with safety pins

Posted by Nigel R on 06/08/2020 14:32:09: Simple answer - no struts! I personally don't see any point building non-scale biplanes and most have struts. If ever I build another one it will be a Sopwith Camel. Because the author of the best war flying book ever written, 'Winged Victory',  an anti-war semi-autobiography,  flew a Camel. Edited By Richard Clark 2 on 06/08/2020 15:24:39

Posted by Barrie Lever on 06/08/2020 09:45:48: Steve You are correct there and I do notice some more enlightened people altering their purchase decisions. We don't need to stop importing from China, just greatly reduce the unequal trade balance and keep them in check on regulatory conformance which is really what this whole thread is about. I would prefer to be a free and poor man rather than be a minion dictated to by the CPC. B. Trade is now global whether we like it not. I do like it. Though as much Chinese stuff is of doubtful quality I rarely buy it and also look to avoid 'hidden' though perfectly legitimate (ie not fake Chinese rip offs) Chinese manufacture with European and US names where the European/US manufacturer has contracted manufacture to China but charges Western prices. However, as the totally independently written book 'Well Made in America' about quality using Harley-Davidson after its management buyout and successful revival  in the 1980s as the core of the book, has been standard reading for years where I work, I did buy two brand new  Harleys. I was also influenced by though very expensive they are made by people who are paid real wages. Edited By Richard Clark 2 on 06/08/2020 15:05:52

Posted by Nigel R on 06/08/2020 14:01:04: I'm aiming for just three wing bolts and one servo plug on my current build. I think that's probably an ok level of faff. I did consider going with elastic bands for the wings, they're also low on faff. I find struts are the main hassle. Even if they are not required for strength they have to be bolted on so they don't fall off or come loose and poke a hole in the wing. The only biplane I have so far made is the Flair SE5 and I didn't think to hinge them on the lower wing so there would be less bolts and they would fold.