RE: Perfect Model Jet
Thanks guys, at present it appears that the scale jets are ahead on popularity. Keep them coming. Regards keith
Posted on: 9/6/2012 11:09 AM by Author "moggyman64" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=11219663

Perfect Model Jet
Hi All, If you could pick your perfect model jet, what would it be? I am curious as to what proportion of flyers prefer classic jets (scale) to the moderm sports type. Regards keith
Posted on: 9/5/2012 1:05 PM by Author "moggyman64" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=11218454

RE: How Much Glass Cloth to Use for Various Size Fuselages
Sidgates, Nice link and video regards Keith
Posted on: 8/24/2012 11:38 AM by Author "moggyman64" in the forum "Composites Fabrication And Repair"
http://www.rcuniverse.com/forum/fb.asp?m=11204615

RE: Hinges
Hi gaRCfield, Thanks for the reply and links, very interesting. keith
Posted on: 8/19/2012 3:34 PM by Author "moggyman64" in the forum "Questions and Answers"
http://www.rcuniverse.com/forum/fb.asp?m=11198965

RE: Hinges
Thanks Barracudahockey, What is the benifit of this method?, apart from keeping the top of the wing smooth. , but I thought that there was less airflow over the top of a wing than on the bottom. Is live hingeing only used on high speed planes an jets? What material is used to maintain a strong flex point? Anybody got any photo's / videos of how this hinge method is done? Regards Keith
Posted on: 8/19/2012 1:00 PM by Author "moggyman64" in the forum "Questions and Answers"
http://www.rcuniverse.com/forum/fb.asp?m=11198830

Hinges
Hi All, What do people mean when the say "live hinges" ? Regards Keith
Posted on: 8/19/2012 10:53 AM by Author "moggyman64" in the forum "Questions and Answers"
http://www.rcuniverse.com/forum/fb.asp?m=11198744

RE: Viper Jet
Hi Eric, that Idea did cross my mind but I am not sure how to do it. I read somewhere to fill the internal of the model with expanding foam and then cut the model into slices to upscale but there must be an easier way to determine the dimensions of the Viper than to ruin a perfectly good model. regards Keith
Posted on: 8/18/2012 8:37 AM by Author "moggyman64" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=11197792

RE: Viper Jet
Hi All, Anybody out there got any ideas? regards keith
Posted on: 8/17/2012 10:33 AM by Author "moggyman64" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=11196958

RE: Viper Jet
I have tried to use Sketch up to determine dimensions from photo,s but this method doesnt appear to be accurate. I can play around and scale photo's but I would need to have photo's from every angle of the plane and some dimensions to start with so thats a non runner. The Viper has been around for a while now so why havn't any drawings been produced? Any other suggestions of how I can obtain the information to build from. Regards Keith
Posted on: 8/17/2012 10:25 AM by Author "moggyman64" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=11181440

Viper Jet
Hi All, I want to build myself a MK 2 Viper Jet with a 78" (2 mtr) wingspan or similar size Futura jet, but despite endless hours of searching the Internet and speaking to numerous plan suppliers, I can't find a set of plans or even basic drawings that show the relevant dimensions to enable me to build one. Thanks in advance for any information you can provide. Regards Keith
Posted on: 8/17/2012 10:13 AM by Author "moggyman64" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=11179530

RE: composite Fuse Joint
Thank you All for your help with this thread Regards keith
Posted on: 8/16/2012 1:08 PM by Author "moggyman64" in the forum "Composites Fabrication And Repair"
http://www.rcuniverse.com/forum/fb.asp?m=11196025

RE: fuel proof spray paints?
Hi Scott 42, Patience is key to a good finish, take your time and enjoy getting good results. Hope it works out for you. Keith
Posted on: 8/15/2012 1:25 PM by Author "moggyman64" in the forum "Questions and Answers"
http://www.rcuniverse.com/forum/fb.asp?m=11194705

RE: Wing type question
Thanks Guys for posting, very interesting. It amazes me at the amount of information one needs to know regarding building and flying model aeroplanes, I am doing my best to understand what you guys are actually saying, you do put your points across very clearly but to be honest some of the terminology being used in the thread is getting the better of me at times. Keep it coming. Regards Keith
Posted on: 8/15/2012 1:18 PM by Author "moggyman64" in the forum "Aerodynamics"
http://www.rcuniverse.com/forum/fb.asp?m=11194701

RE: composite Fuse Joint
Thanks Steve for taking the time to answer my questions, I think that I now have enough information to get things underway. One area I may struggle with is which glass and resin to use an where to use it. Obviously I will need use different layups for the fuse and wings. When I have made the plugs and molds I may need to post some queries on here again for some help or if I may PM you that would be great? Regards Keith
Posted on: 8/15/2012 12:47 PM by Author "moggyman64" in the forum "Composites Fabrication And Repair"
http://www.rcuniverse.com/forum/fb.asp?m=11194656

RE: composite Fuse Joint
Hi Steve, I am having a little difficulty in understanding some of the terminology that is being used for example - grab areas and oilcan - maybe you could shed some light on those please. At this point I dont want to get into sandwich type construction, what I meant was to insert foam to fill in the spaces between the ribs, as If I had a foam core and just cut out and inserted ply formers at relative points. Your concept wing type that you have described sound exactly the same as the type I want to adopt, I just want to keep it simple with minimun internal framing (composite or wood) and skin the wing in glass instead of a film type covering. With regards to making small parts well that is something I would enjoy doing because I like being challenged hence why I want to get into composite construction. If I do get fed up making small parts the there is always balsa and ply to fall back on but I would have tried. I have done the traditional builds from plans and kits but never really questioned anything just followed instructions, now I want to understand what makes a plane fly or not. Do you have any photo's/video's of the internal structure of one of your wings being built, using the methods we are discussing. The wing shown in Wyo's video is quite flat and the wings I will be doing have large curved aerofiles edges so there is only an edge the thickness of the layup to bond together. so will the "bog" seam stay in the right place when the mold is clamped or just run to the low side? Regards keith
Posted on: 8/15/2012 2:38 AM by Author "moggyman64" in the forum "Composites Fabrication And Repair"
http://www.rcuniverse.com/forum/fb.asp?m=11194061

RE: Control Surface Horn Positions
Hi kit builder, any diagrams Keith
Posted on: 8/14/2012 4:26 PM by Author "moggyman64" in the forum "Questions and Answers"
http://www.rcuniverse.com/forum/fb.asp?m=11193589

RE: HELP! Composite fuselage, how do I attach vert and horiz stabs?
Hi Ed Smith, Great reply to this post, can I ask you what you mean by "centre line offset" relating to the rudder. I thought that the centre line of the rudder would fit to the centre line of the fuse. Regards keith
Posted on: 8/14/2012 10:07 AM by Author "moggyman64" in the forum "Composites Fabrication And Repair"
http://www.rcuniverse.com/forum/fb.asp?m=11193140

RE: composite Fuse Joint
Thanks scalecraft and Wyowindworks for your input which is extremely helpful. As I said earlier I have built and flown planes using traditional methods but I am new to working with composite, and really looking forward to getting started in the next few weeks, however before I steam straight in and probably make lots of mistakes and waste money etc. I want to gather all the information I can regarding all the little tricky bits like the topics covered in this post. I know that sometimes you might be saying to yourself that the answer to that is common sense and I do use it to arrive at what I think will be the correct answers but there is no better way to learn than to get the opinion from people with experience. I have a few more questions, 1) The models I will be building will generally be sport types and have quite a deep aerofiles so I will use the joggled gasket joint to the fuse and the leading and trailing edges on the wings, my question is on the control surfaces where the joints will be alot smaller with acute angles, as recommended I would use the Bog seem joint but would this joint be sufficient to fit say robart pin hinges into or would I have to put in some wood blocks to fix the hinges to. The reason I ask is because looking at Wyowindworks wing section, and is a great joint for that type of wing but it looks like there may not be anything significant or consistant to fit say a 25mm pin through. This would be highlighted in the instance of the control surface leading edges where the is usually a double chamfer to allow for clearanceand movement up and down or side to side. What do you think? 2) I am planning on fabricating composite "I beam" type ribs to accept and support the wing tubes and using foam infill between the ribs to support the composite wing sheet, do you think this is a good idea or would it be best to just use these ribs without any need for foam. Would a set of composite ribs be lighter that ribs and foam? What do you think? 3) When using the bog and joggle methods of jointing in the mold, It has been mention by Wyowindworks to wait til the layup gels and then trim away the excess material and then carry out the joint procedure, my question is do I polish the mold flanges and if any adhesive oozes out of the joint when the mold is clamped shut do I trim this off after parting the mold of should there not be any adhesive leaking out of the joint. Kind regards keith
Posted on: 8/14/2012 9:45 AM by Author "moggyman64" in the forum "Composites Fabrication And Repair"
http://www.rcuniverse.com/forum/fb.asp?m=11193106

RE: composite Fuse Joint
Thanks wyowindworks, Very helpful details, as they say "a picture paints a thousand words". Have you completed the beginners videos as mentioned in the link you provided. I have registered on the Vimeo site and just need to activate my email. I think I have got my head round the different methods of joining the fuse but will they work on wings especially the rear stabs because there would be less material to create a joggle at the leading and trailing edges. I was also thinking of using fibreglass to make formers and wing ribs etc. obviously as light as structure needs would allow. Really appreciate your info. keith
Posted on: 8/13/2012 4:34 AM by Author "moggyman64" in the forum "Composites Fabrication And Repair"
http://www.rcuniverse.com/forum/fb.asp?m=11191359

RE: composite Fuse Joint
Hi wyowindworks, I suppose it would be better to do in the mold as this would keep the everything in alignment, excuse my ignorance but could you expand a little more on the 4 types of joint you have listed, I have not done this before. Keith
Posted on: 8/12/2012 9:44 AM by Author "moggyman64" in the forum "Composites Fabrication And Repair"
http://www.rcuniverse.com/forum/fb.asp?m=11190417

composite Fuse Joint
Hi All, Can somebody please point me in the direction for information of how to join/bond the two halves of a composite fuselage, and composite wings etc. Regards Keith
Posted on: 8/12/2012 7:11 AM by Author "moggyman64" in the forum "Composites Fabrication And Repair"
http://www.rcuniverse.com/forum/fb.asp?m=11190271

RE: Control Surface Horn Positions
Thats my understanding of it barracudahocky, Keith
Posted on: 8/12/2012 4:54 AM by Author "moggyman64" in the forum "Questions and Answers"
http://www.rcuniverse.com/forum/fb.asp?m=11190159

RE: Control Surface Horn Positions
Thanks da Rock for taking time to do the sketch and a super explaination and also thanks frets24 for agreeing that there was at least some logic behind my observation. In my mind I was making sense but I forgot about the 90* angle of the control arm. However I am still not convinced that having the pull pull rudder control wires overly tight as said by rodney would not be a strain on the servo, I am of the impression that with this type of set up you should have the wires with a slight tension and with no slack, otherwise it would put unecessary strain on a servo which over a period of time would be detremental to the servo and possibly the control horn mountings themselves. From day one when I was learning how to setup models I was always told by people with experience that you should never apply unecessary strain to a servo by way of overly tight or possibly any fowling down through the fuse or firewall. Maybe I have just been away from the hobby too long and things have changed. Regards Keith
Posted on: 8/12/2012 3:59 AM by Author "moggyman64" in the forum "Questions and Answers"
http://www.rcuniverse.com/forum/fb.asp?m=11190135

RE: Control Surface Horn Positions
Thanks chaps for the replies, I am not making statements but merely voiceing some observations. regards keith
Posted on: 8/11/2012 2:16 PM by Author "moggyman64" in the forum "Questions and Answers"
http://www.rcuniverse.com/forum/fb.asp?m=11189598

Control Surface Horn Positions
Hi All, I have been away from the hobby for quite a few years and now I am re-aquainting myself with building and model set up. I have been looking at photo's of various planes and also on looking at some new plans that I have aquired and I have noticed something that I hadn't noticed previously. Dont know if this has been covered in a previous thread so my apologies if it has. The mojority of the control surface servo horns that move up and down and side to side are fixed to or very near the leading edge of the control surface., I know many people will say that this is the thickest piece of wood or similar to get a good fixing for the horn. But in my opinion this is putting extra strain on the servo or making it work harder than necessary which in turn would drain more power from the battery(s) than necessary. It is my understanding that something with less resistance would move easier and freely. For example if you have a pull pull rudder set up and have the wires too tight then this will put strain on the servo plus battery. I have attached a brief sketch to illustrate what I mean. For example if you have a door which is ajar by 45 degs and try to push it in the directions at positions 1 and 2 then it is extremely harder to do (you need to use more than one finger) with a lot of effort than if you were to push the door using positions 3 and 4 ( you can do it very easily with one finger) with a lot less effort. Please try it yourself. Therefore, if the control horns were moved in toward lets say a 1/3 or 1/2 of the dept of the surface instead of near the edge, obviously with some additional strenght ( kevlar, wood etc ) then would this not benifit both the servo and the battery. I would appreciate any comments you may have. Regards Keith PS. First time to upload a photo so hope it works
Posted on: 8/11/2012 12:55 PM by Author "moggyman64" in the forum "Questions and Answers"
http://www.rcuniverse.com/forum/fb.asp?m=11189522

RE: Futuba 6EXA TX Question
Thanks jester, Really good link, I have sent them an e-mail regarding suitability for my Tx. Regards keith
Posted on: 8/11/2012 5:22 AM by Author "moggyman64" in the forum "Questions and Answers"
http://www.rcuniverse.com/forum/fb.asp?m=11189139

RE: Wing type question
Thanks rmh, your a gentleman keith
Posted on: 8/10/2012 12:05 PM by Author "moggyman64" in the forum "Aerodynamics"
http://www.rcuniverse.com/forum/fb.asp?m=11188411

RE: Wing type question
Hi rmh, The plan is for a 78" wingspan and states that it is suitable for 25-35cc gas engine or similar size in glow. I want to go with gas and am thinking about a DLE/DLA 30. So based on what you just said which size would recommend . Regards keith
Posted on: 8/10/2012 10:45 AM by Author "moggyman64" in the forum "Aerodynamics"
http://www.rcuniverse.com/forum/fb.asp?m=11188318

RE: Wing type question
Thank you chaps, I guess thats about as layman as you could be and as such it all makes sense to me now. The model will be approx 6kgs in dry weight. As I said earlier, I want and feel that I need to understand the basics of aerodynamics to be able to advance further with detailed flying. I dont want to be just thrashing about in the sky anymore. Many thanks Keith
Posted on: 8/10/2012 6:49 AM by Author "moggyman64" in the forum "Aerodynamics"
http://www.rcuniverse.com/forum/fb.asp?m=11188063

RE: Wing type question
Thanks da Rock, I want to use the plane to do smooth precision aerobatics, on smaller straight wing or tapered wings flown previously I have not or dont remember having any problems with wings dropping or stalling drastically, so is this likely to change by moving into larger models.? The tapered wing is the same span as the straight wing on the plan. I know this question might sound like it is common sense but II have not flown for a few years and want to start back. Previously I just got a model and flew it round and done the basic aerobatics but this time I want to tidy up my flying and get the manouvres more acurate and precise. So the reasoning behind my question is that if I understand how and what affects the plane in flight then hopefully I will be in a position to understand why my plane is behaving in a certain way. So in a nutshell I am trying to educate myself with what make a plane fly well or not. Now that you know my game plan, what wing would you select if you were in my position? Regards Keith
Posted on: 8/10/2012 5:16 AM by Author "moggyman64" in the forum "Aerodynamics"
http://www.rcuniverse.com/forum/fb.asp?m=11187966