David Davis Posted August 28, 2018 Share Posted August 28, 2018 Posted by Dave Hess on 27/08/2018 23:02:16: I just noticed something in case it's important to you. If you look at the wing tips in my photo (19th Aug) and the tips in the front view of the drawing in post #1, you can see that the underside has a distinct camber to it to try and give the impression that the whole wing is cambered, like the full-size aircraft would be. Some of the later versions that people have made since then didn't include that camber. Edited By Dave Hess on 27/08/2018 23:03:53 Quite so Dave. I built my aileron wing with flat tips because it was easier! For the three channel wing which I used in La Coupe I incorporated the undercamber. Some of my competitors used flat wing tips including the winner while others removed the tip entirely simply cutting off the wing at the last wing rib. I doubt whether any alteration from standard affects the flying characteristics very much. Quote Link to comment Share on other sites More sharing options...
McG 6969 Posted August 28, 2018 Author Share Posted August 28, 2018 Thank you, Steven. I must admit I had the same kind of feeling. That’s why I considered using the Natural Solartex and decided to have darker wood staining to create a contrast. I might hope this is going to keep the wooden structure a tiny bit visible. I guess we’ll see in the future if it was worth the extra work. @ David & Dave > I think I can share your idea of not really ‘altering the flying characteristics’ of the bird very much. Although, as an under-cambered profile needs more AoA to generate lift, this could also mean that the profile becomes an anti tipstall device, right? Even at our low Reynolds figures? Well, if washout does help some same sized model warbirds, why not? Maybe Christian Chauzit, the Baron designer, wasn’t hoping to get a ‘cosmetic’ look only? Anyhow, I think I must stop having some controversial theories or I might loose my entry ticket to the Fury Master Classroom… Hakuna matata Chris BE - BRU / CTR Ticket Control Quote Link to comment Share on other sites More sharing options...
Dave Hess Posted August 28, 2018 Share Posted August 28, 2018 I was also wondering whether it was anything to do with tip stalling. I think it might make a slight difference, but I reckon that it was done more for aesthetics than practical reasons. It certainly gives the impression that the whole wing had an under-camber. Quote Link to comment Share on other sites More sharing options...
onetenor Posted August 28, 2018 Share Posted August 28, 2018 Undercamber of it's own won't create washout unless deliberately built in. In fact I would have thought just the opposite is the case. Wash in. Edited By onetenor on 28/08/2018 22:38:52 Quote Link to comment Share on other sites More sharing options...
McG 6969 Posted August 29, 2018 Author Share Posted August 29, 2018 I'm afraid you got a bit confused by my unclear writing, John. I didn't write that the under cambered profile creates washout, I just asked myself if it would also work at our low Reynolds numbers, probably at around 50.000. Hence I made the remark that the washout seems to work - even at our small sizes and low speed - for warbirds type wings, tapered or elliptical. I've not yet seen a constant chord wing with washout at the tips, but I still have a lot to learn. If I understood correctly, tip stall gets created by having a sudden to high AoA (alpha) at the tip. An under cambered profile needs a higher Alpha angle to create lift, in this case compared to the Clark Y. So the Clark Y wing will loose his lift (at +/- 9° Alpha), long before the tip will, resulting in a very gentle and balanced stall. This remains a pure theoretical projection and as Dave wrote, the designer very probably only had aesthetic objectives. Of course, if there is an Aero Guru around, may he feel very welcome to jump in... Hakuna matata Chris BE - BRU / CTR Reynolds Control Quote Link to comment Share on other sites More sharing options...
McG 6969 Posted August 29, 2018 Author Share Posted August 29, 2018 Hello again, After preparing quite a bit of small bits (!?), I finally had a start with the Spanwis machinegun. Well, a ‘false’ start that is as I got the ammo drum - the very first piece - totally wrong. I tried with a lamination of two poplar ply roundels to obtain the drum shape by filing and sanding. A very nice disaster… Then I adapted my approach by firstly using balsa instead and ‘imitating’ the shape with a few laminations of copy paper. I went on with the lamination concept for the body of the gun. My first idea was to make my own ‘cardboard’ lamination using white & brown paper up to +/- 2mm thickness. But luckily I found some ready made at the local craft shop. It is used for ‘passe-partout’ cut outs for picture/drawing framing. It’s cheap and a lot easier as it gives a good strength with the cross lamination of the paper grains. I used mainly that cardboard together with some pieces of 2mm balsa where possible. The gas tube gear is simply covered with a bankcard roundel cut with a perforator. I must admit I had to ‘cheat’ with the trigger of the beast. After two mishaps, I went for a small nail filed flat at two opposite sides, slightly bent and glued into the core board. I then had a first dry fit with the barrels and cooling mantle. Styrene tubes, balsa roundels front & back and a 0,4mm ply mantle that came with José’s Vicomte kit. I believe here above are a lot of words for just such a small item… Hakuna matata Chris BE - BRU / CTR Spanwis Control Quote Link to comment Share on other sites More sharing options...
Levanter Posted August 29, 2018 Share Posted August 29, 2018 Magnificent work there Chris. Any more detailed and you may need a firearms licence. Levanter Quote Link to comment Share on other sites More sharing options...
Robert Parker Posted August 29, 2018 Share Posted August 29, 2018 Hi Chris, It may be lot of words for a small item but I must give you credit for your workmanship again, Well done, I have enjoyed watching this thread it won't be long now. Regards Robert Quote Link to comment Share on other sites More sharing options...
Iris Vlieghe Posted August 30, 2018 Share Posted August 30, 2018 Don't know anything about airplanes but I know 'amazing' when I see it. Wow, this is amazing and you are amazing! Lot(h)s of love, Iris Quote Link to comment Share on other sites More sharing options...
McG 6969 Posted August 30, 2018 Author Share Posted August 30, 2018 Thanks gents & laddie, No worries, Lev. No real details to be added now, except maybe for some wooden handgrips and a prop-synchronised firing device. But, anyhow, it will remain a 'small' licence. I really don't think "it won't be long now', Robert. I'm still adding new lines to the 'to do list' and Iris's new electoral career will have my priority in the following weeks. Very kind of you, 'chef Iris'. I'll now certainly remain your dedicated 'marketing manager' for the forthcoming period up to the 'big day' of October 14th... Hakuna matata Chris BE - BRU / CTR Votes Control Quote Link to comment Share on other sites More sharing options...
McG 6969 Posted September 2, 2018 Author Share Posted September 2, 2018 Hi to all, I managed to have a slight progression in La Grotte with the final sheet covering of the center section. I first added the staining to the cockpit interior as it would be less accessible after sheeting. The sheeting was sanded and the now completed wing is waiting for its staining. I also finalized the dashboard design including an original S.Smith’s (from London) altimeter, a genuine Jaeger (from Paris) RPM-meter and a local Lebeau clock-watch. I even created some WW1-era brass screws for the gauges, but with hindsight, I don’t think they will be very noticeable with the dash printed at 72mm wide. As the dash was the last item to be prepared for Vicky’s water transfers, I finally had those printed out on ‘clear’ and ‘white’ paper and protected by two thin layers of satin varnish. If someone is wondering about the meaning of the ‘Spa’ lettering, I have no idea what it stands for, but a lot of Belgian & French units seemed to use that acronym for their squadrons. There are too many of them for the fuselage and tailplanes, but Gaston strongly insisted in having multiple spare examples. I don’t know really why, though… Hakuna matata Chris BE - BRU / CTR Spares Control Quote Link to comment Share on other sites More sharing options...
Martian Posted September 3, 2018 Share Posted September 3, 2018 Excellent Chris Quote Link to comment Share on other sites More sharing options...
McG 6969 Posted September 3, 2018 Author Share Posted September 3, 2018 Thank you for the nice word, Martian. ... or should I call you 'Alien' Martin... ??? I had a small progress with the last bits of the wing and tailplanes together with some items for the Spanwis during the weekend, but not really something to be pictured yet. As they say, "Stay tuned, ladies & gentlemen" Hakuna matata Chris BE - BRU / CTR Alien Control Quote Link to comment Share on other sites More sharing options...
David Davis Posted September 3, 2018 Share Posted September 3, 2018 Posted by McG 6969 on 02/09/2018 18:28:40: Hi to all, I managed to have a slight progression in La Grotte with the final sheet covering of the center section. I first added the staining to the cockpit interior as it would be less accessible after sheeting. The sheeting was sanded and the now completed wing is waiting for its staining. I also finalized the dashboard design including an original S.Smith’s (from London) altimeter, a genuine Jaeger (from Paris) RPM-meter and a local Lebeau clock-watch. I even created some WW1-era brass screws for the gauges, but with hindsight, I don’t think they will be very noticeable with the dash printed at 72mm wide. As the dash was the last item to be prepared for Vicky’s water transfers, I finally had those printed out on ‘clear’ and ‘white’ paper and protected by two thin layers of satin varnish. If someone is wondering about the meaning of the ‘Spa’ lettering, I have no idea what it stands for, but a lot of Belgian & French units seemed to use that acronym for their squadrons. There are too many of them for the fuselage and tailplanes, but Gaston strongly insisted in having multiple spare examples. I don’t know really why, though… Hakuna matata Chris BE - BRU / CTR Spares Control SPA could have referred to a squadron equipped with SPADs. Quote Link to comment Share on other sites More sharing options...
Robert Parker Posted September 3, 2018 Share Posted September 3, 2018 Hi Chris, Once again keeping up your excellent workmanship and attention to detail. Keep going your at the fun bit now. Regards Robert Quote Link to comment Share on other sites More sharing options...
Iris Vlieghe Posted September 3, 2018 Share Posted September 3, 2018 Can't stop saying it but this looks great again Chris (spa or no spa!) ... Lot(h)s of love, Iris BE - BRU / CTR Acronyms Control Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted September 3, 2018 Share Posted September 3, 2018 Love the gun, looking forward to your Fury blog. John...Soon be October control. Quote Link to comment Share on other sites More sharing options...
McG 6969 Posted September 5, 2018 Author Share Posted September 5, 2018 Thanks to all of you, lady & gents. I thought you could be right, David. The BAF had four different types of Spads in service, but they all carried the 'S' or 'SP' for their squadrons. During my research, I discovered that the 'S' could mean 'section' and that the 'pa' might come from 'patrouille' in French, meaning something like the equivalent of 'scouting' or 'reconnaissance'. But I'm really not an historian... Not exactly "at the fun bit" yet, Robert. Still a lot to do to - and around - the fuselage. But I enjoy to alternate building and finishing stuff. In your case it's "no spa", Lady Iris. Inside joke here, gents. As 'sp.a' also stands for the Belgian socialist party but which is not represented in Zaventem anymore. Just a bit of patience, John. I'm finalizing the Spanwis at the moment, but when it's ready, you'll be the first to know. Regarding the Fury Classroom, I really don't know when I 'll be able to jump in and start my build... Hakuna matata Chris BE - BRU / CTR Spa Control Quote Link to comment Share on other sites More sharing options...
Colin Leighfield Posted September 5, 2018 Share Posted September 5, 2018 It all looks quite inspired Chris, you’re a perfectionist. Quote Link to comment Share on other sites More sharing options...
onetenor Posted September 6, 2018 Share Posted September 6, 2018 Lovely Job Chris. Spa. Societe pour L'aviation et Ses Derives or Societe Provisoire Des Aeroplanes Deperdussin et Bleriot if it helps Chris I thought at first it could be squadron but that is Escadron isn't it ? Quote Link to comment Share on other sites More sharing options...
McG 6969 Posted September 6, 2018 Author Share Posted September 6, 2018 Posted by Colin Leighfield on 05/09/2018 20:51:57: It all looks quite inspired Chris, you’re a perfectionist. Thanks, Colin. Well, I guess that's what The LotH means by calling me 'mildly autistic'... I googled some French acronyms as well, John. Unfortunately it wasn't of great help. Yep, 'squadron' can be translated using 'escadron'. But it gets even more complicated as there are some differences between administrative and logistical definitions. Formerly the appellation was used for cavalry units, then later also for infantry and armoured infantry... Nowadays, to make it even more understandable, 'escadron' is still in use for Army, 'escadre' for Navy and 'escadrille' for Air Force... Still following ??? Hakuna matata Chris BE - BRU / CTR Esca... Control Edited By McG 6969 on 06/09/2018 09:58:21 Quote Link to comment Share on other sites More sharing options...
McG 6969 Posted September 7, 2018 Author Share Posted September 7, 2018 Hello again, I thought it was about time to keep the promise I made to John S some time ago. Following Levanter’s remark and as I don’t want to have the trouble of a ‘firearms licence’, I halted detailing the Spanwis further. It’s about fully completed and glued now. The final length is 175mm and very close to a 1:6 scale. I had to add some reinforcement strip at the bottom of the cooling mantle as it really was way too fragile, but it seems to integrate nicely and it will be at the underside anyway. I also added some scale parts at the top of the body and the supports for the ammo drum leather handle. The barrel nozzle is a cheap syringe tip glued front to rear. The re-arming device is a small length of tooth pick and control surface outer tube. The Spanwis really needed a firing synchronisation to avoid ‘killing’ Vicky’s propeller , so this is made with a single strand PCB wire, a 1mm wide ali tape strip ‘spiralled’ around and small rings of Q-tips tube for the ends of it. Note that the wooden handgrips are dry fit and will be glued after the painting job is done. But this is for a later day as I never airbrushed and the cheapo Shenzhen kit is still on its way to BE. Hakuna matata Chris BE - BRU / CTR (Not Too Much) Details Control Quote Link to comment Share on other sites More sharing options...
Andy G. Posted September 8, 2018 Share Posted September 8, 2018 Simply stunning Chris! Makes my balsa bodgery look totally amateur. Quote Link to comment Share on other sites More sharing options...
McG 6969 Posted September 9, 2018 Author Share Posted September 9, 2018 Very kind of you, Andy. But then, at least, your "balsa bodgery" gives you some birdies that are able to fly. Which is what still has to be confirmed in my case. I often think about your Predator model with quite a bit of envy. Hakuna matata Chris BE - BRU / CTR Bodger Control Quote Link to comment Share on other sites More sharing options...
McG 6969 Posted September 10, 2018 Author Share Posted September 10, 2018 Hi again to all of you that are still present, As all the flying surfaces are completed now, it’s about the right time to have a weight session. The wing comes in at just under 274g. Not that bad I thought for a 1600mm wingspan, but unfortunately I don’t have any figures of other Vicomtes to compare with. The fuselage shows at 186g but still misses the bottom sheeting and the battery hatch. So I added that big balsa block that came with the kit to compensate which gives us 50g extra at 236g. But then this rookie forgot to weight the stab/elevator. I’m afraid I’ll have to come back with the missing figures then… Hakuna matata Chris BE - BRU / CTR ADD Control Quote Link to comment Share on other sites More sharing options...
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