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Timmy!

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About Timmy!

  • Rank
    Step away from the computer!
  • Birthday 10/06/1971

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  • Gender
    Male
  • Interests
    Marine Aircraft 70's and on. !/48th and larger.

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  1. Thanks everyone for checking in and the kind comment are as alway much appreciated. I'll work on that...promise. It’s DONE!! Well the nose gear well at least. It’s been more of the same work I’ve previously posted, just more of it. Getting the last bits of wiring and tubing installed at the halves and front and rear bulkhead came together was a bit of a challenge. The are a few lines that proved impossible to install. But none of the ones I couldn’t get to can be seen easily or at all. In fact there’s a good bit of detail that will be difficult to see when the gear and doors are installed. You never know what will be seen or not until everything is installed so I put the details in. On to the photo’s: The CAD model as it exists today, a good chunk of time was spent updating the model with new parts for printing. The completed well: The last parts to install were the “filler” parts that close off the well and define the door opening. That’s all for now… Oh and I created a new template for my website, that I hope is a little more modern and user friendly. Feed back welcome. Full article here. Timmy!'s Tech Jaguar Nose Gear Well Thanks, as always, for stoping by. Timmy!
  2. Quick update. More tubing and parts added. Getting close to closing up the nose gear and cockpit assembly. Lots of parts needed to be modeled up printed and attached. Plus no small amount of time figuring out where the plumbing goes. I'll do a complete write up of the nose gear well and publish a complete article on my website once the assembly is complete. More soon.... Timmy! More soon.... Timmy!
  3. Time to take a little break from tubing! Here is the Weapon Main Unit, part of the control of the five stores hard points. It' s a good warm up for the cockpit detailing to come. The main box was printed along with a block of switches and knobs. The clear cover was cut from Evergreen clear 0.010" styrene and scored and folded to it final shape. The upper portion masked and sanded to create the frosted border. Fairly simple paint job, black body, aluminum wire connections, switches and cover latches and dark grey wiring boots. After a coat a Future decals were applied and a little thinned oil paint was used to pick out details and add some grime. Finally a coat 50/50 flat and gloss lacquer to unify the finish and the cover was attached. Plumbing is about half done so that's next.... More soon and thanks for checking in! Timmy!
  4. Took some iPhone shots today. The majority of the hydraulic lines are complete for the top of the nose gear well. I’ve added a wire bundle, that several hydraulic tubes will route over, was installed. These tubes required a number of T fittings and check valves to be printed up and pieced together. It’s not an impressive number of tubes installed since my last installment but between fiddly construction and hours of staring at photos to understand where everything connects they consumed that time span. Lastly the torque tube that connects the aft doors to their actuator was installed. There are some hydraulic tubes that will route over this tube necessitating it’s installment now. On to the photos... More soon.... Thanks for checking in! Timmy!
  5. Hi guys, I‘ve started with some assembly and initial layers of detail. The following photos are the left side of the nose landing gear well. This detail is primarily the hydraulic tubing, and insulated environmental system tubing. As a proof of concept idea I chose to try to print sections of tubing. The aft most lines are laterally offset and have connectors that needed to be rendered. Doubting my ability to bend and fashion identical parallel line by hand as well as keeping future production in mind a printing attempt was justified. So the tube sections were modeled in CAD with portions tubing clamps at each end and sent off to my Photon. I did print three copies of each section, as it turned out, all printed successfully but one of the three was perfect. The remainder of the tubing was fashioned from lead wire. Printed fittings and CNC milled tubing clamps were placed on the side wall using a paper template made from a 2d drawing exported from my CAD software. Hours of studying photographs and tracing one line at a time, I managed to get all the pipes in what I think is the right place. That is to say, every tube end landed on a connection point, no loose ends. I know they are not 100% correct but, without a maintenance pub that shows a trace of each line....I’ve achieved a, let’s say, 98% accurate result. Here are a few more printed parts. I finally invested in a proper macro lens with a ring flash. I think the photos are much better...two problems though. 1. You can see every microscopic flaw, even though I build with layers of magnification from my cheaters down to 10x jewelers loop. ....and.... 2. I’m working on my f stops for depth of field. So far my shots are hand held, maybe a little less laziness on my part and I should use a tripod and focus merge multiple shots. Irregardess y’all ort git the gist of my progress. Thanks for checking in! Timmy!
  6. The original model was begun on Rhino Mac, and is now being brought in and redesigned in Fusion 360. One of the biggest reasons for the switch was the integrated CAM functionality. Hello again! I’ve been busy printing and prepping parts. The skeleton and first layers of detail are ready for final fitting and assembly. Everything received a coat of black epoxy primer, for two reasons to seal the FDM printed parts and fill machine marks and layer lines on the CNC cut, and resin printed parts. I mixed up some chromate color with Tamiya yellow and green and sprayed a base color layer. A few days later I received some MRP paints...I've been looking a paint solution since the demise of Floquil. Great paint, and I super happy with the results. Anyway, I sprayed a thin layer of MRP chromate over the Tamiya color and I was pleased with the mottled effect and overall fidelity of the base color. Details were painted in their appropriate colors, then the parts were sealed with Future. A layer of lamp black and burnt umber oils, thinned with Japan dyer was applied, then promptly wiped away. This dirtied up the surfaces and created a good back ground for the details to come. Assembly is underway, with some printing successes I'm looking forward to share in the next installment White parts CNC cut acrylic and styrene, green/blue parts are resin printed, and the dark gray part in the middle was CNC cut, top and bottom halves the make up the cockpit floor and nose gear well overhead. The nose gear well half had a printed detail appliqué added. Primed parts Base Tamiya color Weathered parts Detail composites This stuff is coming up. These are the console panels that were cut from 0.040” styrene on the CNC mill. Thanks for tuning in! Timmy!
  7. It has to do with swept wing aerodynamics and span wise airflow. Bad things like adverse yaw and pro-verse roll happen. Google swept wing aerodynamics if you want to learn more. In small aircraft straight wing world, a gnarly slip to descend fast or fix that high approach, short of aerobatics...nothing more fun! Timmy!
  8. For anyone willing to attempt this type of conversion, I have uploaded some files to Thingiverse. Some of the parts are meant to be printed on resin type printers and others for CNC milling. Part descriptions will indicate what method best suited for production. Enjoy and thanks for watching the project. Timmy! P.S. Plans will be published at a future date. I'll post here when available. Goshawk Parts
  9. You're warm. The ailerons are deflected. Ailerons deflected normally, there is no cross control. Cross control, very bad in swept wing jets, by the way.
  10. Well kids.... I started all over again... New thread because the old one was just devolving into a endless stream of do overs. THIS THREAD SHALL NOT BE WHAT CAME BEFORE...THIS ONE WILL BE A FINISHED PROTOTYPE MODEL!! So a few months back my good friend Paul Fisher lost his home and wonderful workshop to fire in Paradise, CA. I am so happy he and his family escaped and in that light the mention of what comes next seems so trivial. Paul was in possession of the masters I had completed at the time of the fire so an opportunity to build a better model arose. Considering the magnitude of the work I previously completed, I started thinking about how to speed up the build. As many of you know I have turned to CNC and SLA type 3d printing to augment the hand building of the model. Until recently I had eschewed the use of FDM type printers due to the inaccuracy of the prints, and significant post processing required after printing model parts. Cost also was a factor, nothing was worth the investment versus the risk of poor parts. Enter the Tiertime Cetus MKIII. This little printer was cheap, precise and worth a gamble. The main feature that attracted me to the printer was the linear guide rails and bearing blocks. These almost guarantee accurate movement of the axises of the printer. With a price in the $300 US range it was worth a try. With the printer in hand and after some tweaking with the assembly of the printer I managed to print dimensionally accurate parts. One inch cubes were printed and were measured by digital caliper only a few ten thousands of an inch from true, and square adjacent surfaces measured with a machinist's square. So I ordered up 7,000g of PLA filament and started a-printing. On a similar journey I ordered up an Anycubic Photon MSLA printer, though this journey was much longer because the Photon required much more significant modification to get true parts. Out of the box it made fantastic parts in terms of detail. However, they parts didn't fit with others, they were skewed in the Z or vertical axis. The modification was much too complex to detail in this post, suffice to say the machine was disassembled, parts were machined true, linear rails and bearing blocks added and a new parts were machined to make it all work. Parts that came out of the machine post modification were exceptional! Now that I have three machines working simultaneously part production has definitely accelerated the pace of this build. I have also made some design changes. Outside of getting another chance to improve the model's accuracy, simplifying and streamlining the build has been a chief consideration. So the model will still be "skinned" in aluminum sheet but only where there are removable panels, the remainder of panel detail will be scribed in to a layer of primer paint. PLA is a difficult material to sand and also hygroscopic and needed to be well sealed. I'm using 2 part automotive epoxy paint (paint and hardener) to fill and "glue" the PLA layers together. The result is a surface that is much easier to sand and finish. You can see a few of the PLA parts were the black primer has been applied and finishing has started. Lastly my machining skills have improved to the point where the acrylic parts now have machined in details, rivets and reinforcing layers etc. Here's a shot of the parts so far. These parts represent the main components of the fuselage from the nose to the engine faces. More detailed photos coming as assembly commences. This will be a prototype model, so I will be finishing this one as I go, so you can look forward to finished assemblies going forward. Thanks for checking in! Timmy!
  11. Exactly correct, though the wasn't much preparing of the light material. I cut a rectangular cube glued it in, then sanded the whole wingtip to shape. The light has a larger crossection and the wing tip airfoil so you get the bulged appearance. That bulge was all done with light material and filler, blended to the kit wing. As always thanks so much for following and the kind comments! Timmy!
  12. IT IS DONE!!! I like it, gots some buggers but I learned some new techniques and it’ll look decent on a shelf! Final build article link HERE!… Gave the model a name BTW THE STUDENT’S REVENGE See if you can figure out why…. Thanks for watching, Timmy!
  13. Last details and stand complete! Last of the details and getting the stand finished up. Full write up found HERE. For your viewing pleasure. Thanks for watching, Timmy!
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