Peter Miller Posted December 4, 2020 Author Share Posted December 4, 2020 That is a good picture. Never found that one!! I use 1.32" ply, Four laminations with the grain along the long dimensiopn. That is the outer layers of grain pf course Quote Link to comment Share on other sites More sharing options...
barryt Posted December 4, 2020 Share Posted December 4, 2020 1/32 ply is pretty hard to come by in my neck of the woods, so I'll have to get creative! I hope my model will look at bit like this New Zealand example. No wheel spats, 3 blade prop or wing turbulators though, and I'm going to have to track down that Rans S9 font for the tail. I like the exhaust setup. Rotax 582. 1 Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted December 4, 2020 Author Share Posted December 4, 2020 Interesting that the exhaust on yours is the opposite side to mine. Mine is owned by a chap living in New Zealand but his aircraft is based the Thailand. You could possibly bend 1/16" ply with a bit of heat or steam. Quote Link to comment Share on other sites More sharing options...
bees Posted December 4, 2020 Share Posted December 4, 2020 Wished i had seen that picture before hand, ha well never mind. I envy people that can finish a model like that, i love building from scratch and can make a nice job of it but i hate finishing off regarding covering the model and insignia. I make a reasonable job of covering but if it is not perfect it really bugs me. Must try and listen to the wife more because she says what difference does it make as long has it flies, they don't understand ha,ha. Best regards Glen Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted December 4, 2020 Author Share Posted December 4, 2020 Bees. I love to do fancy colour schemes but my finishes don't stand up to close inspection. Any club member will tell you my most common remark. "You can't see it at 50 feet!" Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted December 7, 2020 Author Share Posted December 7, 2020 Playing with aa new camera yesterday and got a anice picture of club mate MickKings Chaos. This one is enlarged to 60" span. Quote Link to comment Share on other sites More sharing options...
barryt Posted December 7, 2020 Share Posted December 7, 2020 That looks really great. What is on top of the cowl, just behind the prop? Quote Link to comment Share on other sites More sharing options...
Geoff S Posted December 7, 2020 Share Posted December 7, 2020 That looks great, Peter. You obviously had much better weather than we did yesterday. What's the new camera? I bought a s/h so-called Bridge camera (like an SLR but with a fixed zoom lens) earlier this year. It's a Fuiji S200 EXR with a 30 to 450mm zoom (35mm equivalent) but I haven't had a chance to try it for flying pictures. It's very handy for workshop pics with its built-in flash. Geoff Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted December 7, 2020 Author Share Posted December 7, 2020 I think that the object on te cowl is a bitbof covering that has lifted. WE had a great afternoon but 1 1/2 hours was more than enough. 5 mph wing but about 4 degrees. The camera. I am on Amazon VIne. If you buy a lot of stuff and always write a review you may be invited to join Amazon Vine where they offer you goodies for free to review and then keep. These range from a box of crisps and a baar of Chocolate up to very expensive cameras etc My new camera is a Sony Alpha 7C. I will leave you to look it up. Quote Link to comment Share on other sites More sharing options...
bees Posted December 10, 2020 Share Posted December 10, 2020 Hi, Made a bit of a boobie, Not concentrating i accidently glued the ailerons on the wrong way meaning that the vee is facing upwards in stead of down. Only done one but was wondering if it would make a difference regarding the flight envelope , Thank you Quote Link to comment Share on other sites More sharing options...
Geoff S Posted December 10, 2020 Share Posted December 10, 2020 The drawing just shows a conventional aileron 'V' shape at the hinge. I assume you were intending a top hinged installation and now you have a bottom hinged one. Provided you have enough chamfer to allow sufficient aileron up movement (it's common to have more up than down) then I can''t see it making any difference although it might look a bit odd with such a big gap between wing and aileron. Geoff Quote Link to comment Share on other sites More sharing options...
bees Posted December 10, 2020 Share Posted December 10, 2020 Hi, Decided to cut the hinges and reinstall the proper way but thank you for you advice. Glen Quote Link to comment Share on other sites More sharing options...
David Atkins 1 Posted January 14, 2021 Share Posted January 14, 2021 Hi just building the rans Choas and just a quick question regarding the wing fixing. Did you off set the T not as if fixed as shown it clashes with rib R1 .or am I missing something? Everything else is going to plan Quote Link to comment Share on other sites More sharing options...
Martin Harris - Moderator Posted January 15, 2021 Share Posted January 15, 2021 Welcome to the forum David. From the photos on this thread, it appears that there's a ply plate between the two ribs either side of the central rib and the hole is drilled on the centre line through this and the tail end of the central rib. By the time you drill this part that rib looks like it's pretty much redundant at this point anyway. I expect Peter will be along to confirm this but I'm posting more to bump the thread as your question/first post had to wait a little time for moderation... Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted January 15, 2021 Author Share Posted January 15, 2021 You build as shown. Then you fillin between the ribs with thick sheet balsa as shown. this is shaped to match the ribs before adding the centre section sheet You then put a plywood plate on top of that area as shown. This takes the nut ans spreads the load when tightening down the wing hold down bolt. You then drill through on the centre line through the centre ribs. There are two pictures on page one of this blog that show the area Edited By Peter Miller on 15/01/2021 08:44:50 Quote Link to comment Share on other sites More sharing options...
barryt Posted February 4, 2021 Share Posted February 4, 2021 Well it is complete and it flies beautifully. Peter was right about the black canopy, it just doesn't work! The only other mod was a steerable tailwheel which helps on our, often crosswind, runway. Thank you Peter for an interesting and successful design. I am already dreaming of scaling it up a little, making the struts functional and cutting away the wing centre section (that is going to be a challenge) to make the cockpit more scale. Transparent glazing of course!!! Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted February 4, 2021 Author Share Posted February 4, 2021 That is very nice...apart from that canopy!! A friend in our club has built his enlarged to 60 span. It flies like a dream. You might be interested in my latest design. The TEam Minimax. That uses plug in wings and an open cockpit. Have a look at the build blog thread. If you like the idea of the wing mounting PM me and I will send you the PDF files ofmy plans soyou can use my system on your larger Chaos. The Minimax is very (non scale) aerobatic Quote Link to comment Share on other sites More sharing options...
Ian Lennox Posted March 21, 2021 Share Posted March 21, 2021 Peter. I'm completely new to building - this is my first plane build. I have a question: on your picture on this forum (the one showing the dihedral braces and R1 rib, dated 20th June), it indicates that theres 2 x R1 ribs joined together. However on the plan there is only one R1 rib (and in the short kit). Can you please advise? Quote Link to comment Share on other sites More sharing options...
EarlyBird Posted March 21, 2021 Share Posted March 21, 2021 50 minutes ago, Ian Lennox said: Peter. I'm completely new to building - this is my first plane build. I have a question: on your picture on this forum (the one showing the dihedral braces and R1 rib, dated 20th June), it indicates that theres 2 x R1 ribs joined together. However on the plan there is only one R1 rib (and in the short kit). Can you please advise? Hi Ian, The way to get a forum members attention is to use the @Peter Miller. Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted March 28, 2021 Author Share Posted March 28, 2021 Watching again 1 Quote Link to comment Share on other sites More sharing options...
Geoff S Posted January 20, 2022 Share Posted January 20, 2022 I climbed up into the loft/hangar over my workshop yesterday and found a cardboard box sent from Sarik. Honestly (m'lud) I had no idea it was there or what it contained. On investigation, I found it was the drawings, CNC cut parts and balsa pack for the Peter Miller designed Rans S9 Chaos I was intending to build last winter. Over the last year I've had difficulty raising any interest in aeromodelling - flying or building. In fact, I spotted a photo of me in the background of Alex Whittaker's piece about the Ashbourne Scale Day ain October and that was the last time I went up there! OK, so I've assembled the fuselage side pieces and attached the ply doublers and I'm part way through building the starboard wing. It's a start! I may start a build thread but don't hold your collective breaths! I always start with building wings because they are generally quite repetitive and a bit tedious so best tackled when enthusiasm is high - not enjoying wing building is quite a confession for someone who like biplanes. Anyway, you never know, I may have another PM model to test fly once the weather warms up. 5 Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted January 20, 2022 Author Share Posted January 20, 2022 You will like it....Have fun Quote Link to comment Share on other sites More sharing options...
EarlyBird Posted January 21, 2022 Share Posted January 21, 2022 9 hours ago, Geoff S said: It's a start! I may start a build thread but don't hold your collective breaths! Nice one Geoff, a build thread would be interesting even more so with loads of photos and detail. I am wondering myself how to regain my enthusiasm for flying. Would more people building and then flying their creation help? I guess so but only if we know about it by posting on the forum. I have missed the mass build over the last couple of years and as the balsa crisis is over, I wonder if we can do something for 2022. Quote Link to comment Share on other sites More sharing options...
Geoff S Posted January 21, 2022 Share Posted January 21, 2022 On both drawings (the one in the magazine and the one in 2 more substantial sheets provided by Sarik) only a single 1/8" (or 3 mm?) R1 is shown at the centre and only one is provided. There is a slot to take the 1/4" wing retention dowel but with only 1 rib plus the 2 off 1/8" R1a at the side opening it out for the dowel leaves very little 'meat' in the rib. It's also tricky building a wing and leaving off R1 because of the shear webs and spar location. I toyed with the idea of making a single 1/4" R! but in the end I've made a second R1 from 1/8" scrap balsa (I have a boxful of balsa 'remains' I can't bear to scrap!). I just wondered if the single R1 is a drawing error because there's no mention of it in either of Peter's build articles here or in the magazine. It's not a big deal and this isn't an actual kit so a builder is expected to be a bit inventive, I guess ? I've also scarfed the top 1/4" spar as there's no dihedral on the top so it appears as a straight spar over the full wingspan. The 1/4" square spruce dihedral brace covers the join so my angled cut probably isn't necessary but it'll be stronger than an end grain butt joint at zero extra weight. It's a trickier wing than most I've built as it's tapered at both leading and trailing edges as well becoming thinner at the tips. The Liddle Stik I built from a free plan to 'celebrate' Covid 19 in 2020 has identical ribs and, having no dihedral at all was built in one piece. Probably the quickest and easiest built-up wing I've ever made. It flies well, though. Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted January 21, 2022 Author Share Posted January 21, 2022 Yes, There are two rid at the centre. I build one wing including the centre section rib and leading edge sheet. Then I prop I prop it up to twice the dihedral angle so that the other wing is flat on the board and join them with the other root rib and dihedral braces before adding the LE sheet to the second wing. Have a look at some of my other build blogs and that should include Chaos to see my standard method. I photograph and describe it almost every time. Quote Link to comment Share on other sites More sharing options...
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