Max Headroom Posted July 24, 2012 Share Posted July 24, 2012 I'm struggling to find the words to describe this project. Oh what the heck Trevor the inpressed Link to comment Share on other sites More sharing options...
Bertie McBoatface Posted July 24, 2012 Share Posted July 24, 2012 It's modelling Tim, but not as we know it! Link to comment Share on other sites More sharing options...
jimbuna Posted July 24, 2012 Share Posted July 24, 2012 Fantastic work. Link to comment Share on other sites More sharing options...
ghaynes Posted July 24, 2012 Share Posted July 24, 2012 I am speechless! A stunning piece of engineering!!!! Graham Link to comment Share on other sites More sharing options...
Timmy! Posted August 3, 2012 Author Share Posted August 3, 2012 It's modelling Tim, but not as we know it! Don, That's hilarious! Thanks for the effort to say something nice!! Timmy! 1 Link to comment Share on other sites More sharing options...
Timmy! Posted August 3, 2012 Author Share Posted August 3, 2012 Here's what's been going on this week. Granted not a lot of visually appealing progress, but important work to true up the model. This is how I'm checking progress and adding fillets and structures. Essentially I am laying out points with horizontal and vertical measurements taken from the drawings. This shows the intake splitter and the measurements for the point of the splitter. The measurements are transferred to the model (the little penciled in cross). Horizontal measurement method - Long rule, set on a point that matches the end of the pitot, and measurements from there give me distance to vertical planes on the model. The height gauge gives me parallel horizontal lines on the model. Laying out the plastic form you can see it's close but not quite perfect, a little massaging will be necessary. This may look a little extreme but with a model this big these little errors will magnify to larger misalignments later. Plus when I build the rest of parts they may not fit - which kills the whole purpose for all the computer work. Even though I have been careful cutting out and "precisely" laying out the cross-section forms, the double checking of the model has revealed a few problems. Here's one that's pretty obvious. I noticed while I was rough sanding that the nose looked a little bent up. All the forms revealed nicely and evenly, but when I checked the profile shape with a little plastic profile you can see the big gap! Putting the fuse in the jig you can see that the third cross-section measures out fine. But once I got to the tip of the nose you can see it's much higher than it should be. The tip of the height gauge should be even with the top of the tube where the pitot tube fits. I'll cut off the nose, reposition it and then reshape it. Filleting has begun as well. The gun port fillet is in progress - you can see the horizontal lines scribed in - they represent panel lines nearest the fillet. Using photos I can judge where the fillet should start and end. This is a feel process really - sand until it looks right. Same is going to happen here at the engine area. Angled panel lines have been laid out and I'll start finessing this area. When I couldn't take the sanding anymore, I started the intake forms. These will be key to getting area where the intake blends into the fuselage. I pulled cross-sections from the 3d model, two each horizontal and vertical and printed them out. Just likes these, which happen to be forms for the windscreen. The print outs have been glued with Elmer's Glue Stick to 0.040" plastic sheet. The sheet came from signs I got at the hardware store. Cheap and more importantly big sizes! They are then cut out and fit together. I cut interlocking slots into each part so they slide together, just like those old wood dinosaur skeleton models. And last but not least, when I haven't had access to the build, I've been going a little nuts on the 3d seat model. That's it for now. Timmy! 4 Link to comment Share on other sites More sharing options...
Jim Starling Posted August 3, 2012 Share Posted August 3, 2012 tremendous job! Link to comment Share on other sites More sharing options...
Marcos Borges Posted August 11, 2012 Share Posted August 11, 2012 Fantastic work on the two worlds - 3D model and physical model. I'm watching and learning a lot. Cheers, Marcos. Link to comment Share on other sites More sharing options...
fu_manchu Posted August 11, 2012 Share Posted August 11, 2012 Wow, this is some stunning work. Not sure how i mised this, but I will now be watching this with interest Link to comment Share on other sites More sharing options...
Robert Posted August 11, 2012 Share Posted August 11, 2012 (edited) Truly amazing engineering and modelmaking at the same time. Robert Edit:Spelling mistake Edited August 11, 2012 by Robert Link to comment Share on other sites More sharing options...
Timmy! Posted September 4, 2012 Author Share Posted September 4, 2012 Hey everybody! Here are some shots of the latest work. The fillets are essentially done and I got the gun ports in place. Next up, spine will be built up and the windscreen forms are to made. Intakes are attached with foil barriers. The splitter area will need to be shaped with the intakes off - I'll post shots of that when it happens. I needed to get the joints and fillets married up to the separate intake sections first that’s why the temporary attachment of the intakes. After expending a bunch of brain cells trying to finger out how I was going to get the gun ports done, I think I finally got it. At first blush I thought the interior shape was a square oval, but after finding some good photos I found it was a simple circle. So after contemplating complex drilling methods, I found some styrene tube just the right size. After grinding out the fuse with a Dremel armed with a sanding cylinder, I glued in the tube. Filler applied and some sanding and trimming, I think I got the opening really close. While I was at it with the Dremel I got the exhaust area worked out too. Finally, I chopped out the section where the windscreen will fit. More soon Timmy! 4 Link to comment Share on other sites More sharing options...
Matcham11 Posted September 5, 2012 Share Posted September 5, 2012 I must admit, i'm damn impressed about this build! Keep it up Timmie! Really looking forward to see your finished plane! Robin Link to comment Share on other sites More sharing options...
lufbramatt Posted September 5, 2012 Share Posted September 5, 2012 This is superb, I'm very impressed! How are you going to make the seat? Seems to me you'd be best off getting it rapid prototyped on an SLA machine after putting all the effort into the CAD model. If you PM me I can give you contact details of a guy very experienced in making rapid prototyes of this nature if you're interested. Link to comment Share on other sites More sharing options...
Metallicus Posted September 5, 2012 Share Posted September 5, 2012 WoW first time I have seen this thread!! It is amazing!! bookmarked and following!! Link to comment Share on other sites More sharing options...
Timmy! Posted September 5, 2012 Author Share Posted September 5, 2012 Thanks all for the encouragement! This is superb, I'm very impressed! How are you going to make the seat? Seems to me you'd be best off getting it rapid prototyped on an SLA machine after putting all the effort into the CAD model. If you PM me I can give you contact details of a guy very experienced in making rapid prototyes of this nature if you're interested. Thanks for that I'll be in touch should I go that route. Part of the computer work on the seat is for my own CAD education and it's something to do when I'm away from home. Today's work. Cut out a bunch of parts and glued them on to the model. The shape is getting more and more recognizable as a jaguar now - it's motivating. 3 Link to comment Share on other sites More sharing options...
Scratcher Posted September 5, 2012 Share Posted September 5, 2012 I like the idea of the aluminium skin. Will your master be embedded or can you use it again? Link to comment Share on other sites More sharing options...
Timmy! Posted September 5, 2012 Author Share Posted September 5, 2012 I like the idea of the aluminium skin. Will your master be embedded or can you use it again? I'm not really sure. It will ultimately depend on how it's cast. As it is it will only serve as the exterior master, an interior plug will be built as well. Link to comment Share on other sites More sharing options...
Spellbinder99 Posted September 6, 2012 Share Posted September 6, 2012 Great work Timmy! I did seven years in Oman working on RAFO Jaguars, you really seem to be nailing the shapes and contours. Cheers Tony Link to comment Share on other sites More sharing options...
Timmy! Posted September 6, 2012 Author Share Posted September 6, 2012 Great work Timmy! I did seven years in Oman working on RAFO Jaguars, you really seem to be nailing the shapes and contours. Cheers Tony Thanks for that! I really appreciate the feedback from those who got to play with these jets. Having never seen on in person I have to rely on photos and deduction. Last update for tonight, got one more form skeleton complete. This will become the master for a vacuum formed windscreen - which will be faired into the fuse and become a master for a cast windscreen. 3 Link to comment Share on other sites More sharing options...
nirvanagr Posted September 6, 2012 Share Posted September 6, 2012 very nice job so far. What about the cockpit? Will you create a cockpit tub? Link to comment Share on other sites More sharing options...
Timmy! Posted September 6, 2012 Author Share Posted September 6, 2012 (edited) very nice job so far. What about the cockpit? Will you create a cockpit tub? Yes this will be a completely detailed model. Cockpit tub landing gear the works. You are looking at the early phases - detail is down the road a way, but it's coming. Edited September 6, 2012 by Timmy! 1 Link to comment Share on other sites More sharing options...
nirvanagr Posted September 6, 2012 Share Posted September 6, 2012 Wow, well i'll be watching the progress of this kit with pleasure! Can't wait to see it finished! Link to comment Share on other sites More sharing options...
colihamp Posted September 6, 2012 Share Posted September 6, 2012 Oh my word, this is amazing! Link to comment Share on other sites More sharing options...
Osprey2011 Posted September 7, 2012 Share Posted September 7, 2012 Bringing back memories of sitting at RAF Coltishall watching these jets doing their stuff. Man I miss that place.... Outstanding so far, especially as you have never seen one in the flesh! Engineering excellence!!!!!! Link to comment Share on other sites More sharing options...
GrahamS Posted September 7, 2012 Share Posted September 7, 2012 This is crackin' stuff - love it!! Graham Link to comment Share on other sites More sharing options...
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