Peter Miller Posted June 20, 2013 Share Posted June 20, 2013 I have had a love afaiir with the Monocupe series and the 110 Clipwing Special in particular. The problem is hiding the engine and some of the shape around the nose. Then several years ago I found the Aviat 110 Special. A Clipwing with a 200 hp Lycoming. A highly aerobatic aircraft. It may look like a Cub, trust me, it isn't. The main problem, there was only one and the colour scheme is diabolical, Then Tim at Model Markings gave me a quote that was most reasonable. I was ready to start. The drawings took much longer than usual because the 3-views that I had were more of a sketch. I used Monocoupe drawings, photos and the Aviat 3-views. IT is pretty accurate now. There is a lot of building but it does make a nice change from my usual construction. Basically you could say that it is a bit like a Super 60 with bells on. Basic sides THose formers are 8" X 10". The model is 1/5th scale for a .52 four stroke. Wing attachments are motorcycle spokes. Undercarriage plate.It is easier to attach front legs before installing plate. But solder the wires later. Fitting the front three formers to one side. Make sure everything is dead square. Fitting thew other side, squareness is vital. The basic fuselage assmebly. Takes some powerrful bands to pull the sides in. Quote Link to comment Share on other sites More sharing options...
kc Posted June 20, 2013 Share Posted June 20, 2013 Rather neat but unusal wing fixings. What is the span of the model? Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted June 20, 2013 Author Share Posted June 20, 2013 IT will 55" span with a chord of 12". Over 600 sq in. Should be fairly light too. I used a similar wing fixing on my Melody biplane but with cabane struts. Worked well. Quote Link to comment Share on other sites More sharing options...
kc Posted June 21, 2013 Share Posted June 21, 2013 What holds the wing onto the threaded rod? Presumably it's neater than nylon wing bolts would be. I reckon this will be a popular plan, which magazine will it be in? Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted June 21, 2013 Author Share Posted June 21, 2013 Motorcycle spokes come with the nipples that screw down onto the spoke. Vecry neat and strong. No, they won't shear in a crash! It will be in RCM&E. Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted June 21, 2013 Author Share Posted June 21, 2013 Putting some more pictures up now. Front view showing the engine mounting box. Close up of the box. I have since trimmed the top to allow one to see the fuel level in the tank. Another view of the box. The tube for the elastic band to hold the struts in place and the rear U/C leg can be fitted now. Subsiduary side formers fitted and the tube ands rear leg fitted. Side sheet and 1/16" ply window frames fitted. Also front portion of instrument panel being built. Instrument panel covered with 3/32" sheet. The cowl is held on with keyhole slots. This is the small catch that allows the cowl to drop a small distance and come forward. The rear cowl former on its screws and the front cowl former is located using a scrap 1/2" sheet disc glued to the spinner backplate. The 1/4"sq stringers fitted between the formers ready for skinning with 1/8" balsa sheet. Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted July 2, 2013 Author Share Posted July 2, 2013 Been some time since I updated this blog. Here goes. Stringers added. Underside showing battery platform in case I need to move it back. Top view of cabin. Servo tray in bottom for rudder and elevator servos. Throttel servo goes under read window. Cowl with blocks roughly shaped Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted July 2, 2013 Author Share Posted July 2, 2013 Now a bit more Rear of cowl, note keyhole slots for mounting it. Complete cowl, air outlet still has to be covered. Cowl fitted to fuselage Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted July 2, 2013 Author Share Posted July 2, 2013 Now we can start on the wing Basic wing laid out. The bottom spars are laminated from 1/16" X 1/4" spruce and are shaped by pinning down on the curved supports shown hatched. Top spar fitted and the aileron spar and leading edge The two wings joined. You can bhuild them as one if your board is long enough. Close up of the centre section showing how thewings are joined with solid spruce or ply between the spars. also the beech blocks added for the wing hold downs Starting construction of the ailerons. These have to be shaped to match the under side of the wing Quote Link to comment Share on other sites More sharing options...
Former Member Posted July 28, 2013 Share Posted July 28, 2013 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted July 28, 2013 Author Share Posted July 28, 2013 I love the Monococupe series and this is one that has a cowling that will hide the engine. 52 FS, not 30 FS! In fact the cowl is not that hard to do, less work than a scratch built fibreglass unit. I am now doing the covering. All the little diamonds are being done by Model Markings! I am using Deluxe products Aliphatic resin for 90% of the gluing, especially the spars. There isn't much strain on the spar curve really so doubt if delaminating will be a problem. Quote Link to comment Share on other sites More sharing options...
Former Member Posted July 28, 2013 Share Posted July 28, 2013 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted July 29, 2013 Author Share Posted July 29, 2013 The cabin cross section is 8" X 10". I can't quite get my transmitter into it.! Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted July 29, 2013 Author Share Posted July 29, 2013 With the temperature in my workshop at over 27C even first thing in the morning progress has been slowed up but now I have done quite a bit more. The wire undercarriage is filled out with 3/16" sheet. And then skinned with 1/64" ply The spats are laminated from 1/2" sheet with 1/16" ply sides. Later 3/16" sheet is added to doend the sides out. They are mouned using collets The collets are soldered to copper clad glassfibre PCB board. Struts are cosmetic only but are made from spruce Strut ends are made as shown . And then filled and faired with car body filler The fairing and windscreen top is made from laminations of 1/16" balsa former round the leading edge of the wing. Quote Link to comment Share on other sites More sharing options...
Tony Bennett Posted July 29, 2013 Share Posted July 29, 2013 very nice. i allways learn some thing new from your build blogs. Quote Link to comment Share on other sites More sharing options...
Former Member Posted July 29, 2013 Share Posted July 29, 2013 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted July 31, 2013 Author Share Posted July 31, 2013 The monocoupe and Aviat use a strange fairing between fin and tailplane. This is done with the fabric covering as shown The covering is applied as shown. Then the covering is clamped and protected and a heat gun is applied. And you get a scale fairing.. Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted July 31, 2013 Author Share Posted July 31, 2013 Got the basic covering and decoration done. Well, it will look good at 5o feet in the air. Quote Link to comment Share on other sites More sharing options...
David Ashby - Moderator Posted August 1, 2013 Share Posted August 1, 2013 That's very nice Peter, you can't beat a nice high-wing cabin job Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted August 1, 2013 Author Share Posted August 1, 2013 Don't forget, this is basically a Clip Wing Moncoupe with a 200 horse Lycoming. Very aerobatic!! Quote Link to comment Share on other sites More sharing options...
Tartan81 Posted August 1, 2013 Share Posted August 1, 2013 Very good work Peter.love the colour scheme .looks like a little dumpling,all fat and stubby.is the dyhedral from root to tip.or is it just from near the end of the wings?..Your designs are fantastic.but..not to sure about your fairing method on the rear.but better than i could do for sure lol.keep up the good work..My votes for the yak 18....i.c.in the future..or a dauntless .no hurry.but this looks fun, really fun Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted August 1, 2013 Author Share Posted August 1, 2013 There is no dihedral except a slight sweep up of the underside at the tip. The fairing method is scale but the fairing should be slightly bigger. I always thing that the Clip wing Moncoupes look rather like a cartoon bulldog. You know, huge front end and tiny little hindquarters. Quote Link to comment Share on other sites More sharing options...
Tartan81 Posted August 1, 2013 Share Posted August 1, 2013 so you bent the main spars??ok,i guess this way there wouldn't be a kink in the wings,like an sharp change in the wing shape at the tips, or did you cut the lower spar then do the sweep.i donno i've never seen this done .Seems like a good way to continue the flow of the wing shape though .for sure i'd mess it up cartoon bulldog--funny Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted August 1, 2013 Author Share Posted August 1, 2013 If you look at the photos for the wing construction, you will see that the lower spar is laminated from two layers 1/16" X 1/4 spruce. Inboard of the tip there is an extra layer of 1/8" X 1/4" which brings it up to 1/4" sq. The tip is formed on those curved supports. The top spar is 1/8" X 1/4" with a layer of 1/8" X 1/4" inboard of the tip. Quote Link to comment Share on other sites More sharing options...
Tartan81 Posted August 1, 2013 Share Posted August 1, 2013 Ah yes i see now thx for clearing that up for me .But a question why put the top spar so far forword?..Was it for the canopy above the center section?.. Really nice cowl too. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.