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Posted by spinnetti | Nov 24, 2020 @ 11:22 PM | 6,101 Views
I had basically finished the design for 1/6 scale landing gear, counting mostly on casting and machining. With 3d printers so good now, and careful design practices I can make more of the functional parts with the 3d printer. The stainless steel oleo and axle will actually bear the load and transfer it to the mounts. Not sure yet if 3d printed scissors will hold up or if I'll need to cast or machine those. Ordered steel and fittings, and prototyping underway. This is a biggie. Making tires will be another big hurdle. Thinking of 3d printing the master, then pouring a silicone mold. or just 3d printing the mold directly after I get a bigger printer.
Posted by spinnetti | May 02, 2020 @ 10:50 AM | 7,224 Views
Designed up a scale control column for the Blackhorse/Graupner He-111. A bit better than the piece of foam it came with.
Posted by spinnetti | Dec 01, 2019 @ 08:32 PM | 5,390 Views
Finally after years of messing around, with the help of the latest 3D printer tech I'm finally, fully done with my He-111 gear design, with the last details worked out with the purchase of a Blackhorse/Graupner 111.

The pics show just the 3d printed parts, some of the many prototypes at several scales and the the prototype installation. I still have multiple generations of metal gear, but the mounts will have to be redesigned for the Blackhorse airframe, and the new hybrid metal/3d printed version is more scale.
Posted by spinnetti | Nov 23, 2019 @ 03:02 PM | 7,980 Views
Bought a SLA 3d printer and curing station, and redesigned my gear fully scale in this size as a hybrid of mostly 3d printed, with steel, stainless steel and aluminum bits where it made sense. Just finishing up the first couple sets now for installation in my Black Horse model. The pics are of 3 different generations of gear, with the gray ones being the latest SLA parts.
Posted by spinnetti | Aug 23, 2018 @ 07:06 PM | 5,816 Views
Not shown are the mains and nose gear, rear intake, exhaust and spinner (all different than the front). 2nd pic is a 1/10th scale spinner which is designed quite a bit better with snap fit for the spinner to the backplate, and lightened backplate.
Posted by spinnetti | Feb 18, 2018 @ 11:48 AM | 7,194 Views
Playing again with Do-335 components. This is the current part collection, some at 14.68 (lanyu) scale, some at 1/10 scale and the Landing gear at 1/6th scale....Continue Reading
Posted by spinnetti | Oct 12, 2015 @ 08:21 PM | 10,809 Views
Starting to explore investment casting to get more detail out of my parts. With that in mind, started to design some fully scale parts - In this case 6th scale He-111 parts ("scaled up" some of the machined parts too)
Posted by spinnetti | May 10, 2015 @ 03:39 PM | 10,036 Views
This is the 5th set of this gear I've made, each getting more scale.. I think there's one more round on this gear before its done, but not for a while!
Posted by spinnetti | Jan 17, 2015 @ 03:45 PM | 12,228 Views
Finally got the Do-335 gear done (first round anyway). I plan to even have real hydraulics on this one
Posted by spinnetti | Dec 02, 2014 @ 01:15 PM | 10,904 Views
Ok, My prototyping went well. After I got everything working like I wanted, I went through and optimized the design to greatly reduce the unique parts count. I was going to have to make lots of fiddly steel parts, so simplified the attachment of everything and reduced the unique parts count and some machining. Mostly the steel is just cut to length now except the fork mount and hand winding the castoring spring. I got most of the materials I need today, and hope to build a "A0" production assembly tomorrow, then back to the Do-335 mains I think.
Posted by spinnetti | Nov 22, 2014 @ 03:39 PM | 11,549 Views
This is a fully scale Fw-189 Tailwheel assembly in 6th scale. This is a "Hybrid", being partially metal, and partially 3D printed. It has a working shock and is also semi-castoring. Wheel will likely be an off the shelf Dubro as the design is close enough to scale to be credible, but couldn't resist modeling a scale one here.
Posted by spinnetti | Nov 16, 2014 @ 10:05 PM | 12,164 Views
In order to do a proper scale model with the unique features intact, the Fw-189 needs both scale landing gear and prop spinners. It was a lot harder than I expected, but I've modeled up scale spinners with no visible attachment screws, and a free, contra-rotating nose piece with curved vanes, just like the original. I've got some hardware on order and then I can try it out and see how it works.
Posted by spinnetti | Nov 10, 2014 @ 10:58 PM | 11,108 Views
Ok, nerd delight I guess, but I'm tickled to be able to make scale design gear in this small scale. the 3d printing is still a bit crude, but sure beats a piece of wire! The plastic is very strong, and the Oleo is stainless steel tube. Only 12g total, and mounts to the airframe in scale manner. Should be stronger than the rest of the plane.
Posted by spinnetti | Nov 05, 2014 @ 09:22 PM | 11,700 Views
Here's the latest enhancements in the works. The more scale I make it, the more I want to make it. Would like to get another one and start from scratch. I've been messing with the front spinner to get it exactly right and print with a minimum of clean up. I also caved and made backplates too. In this picture is the orignal spinner on the left (no backplate), then after more research, the middle one, but more sources didn't agree, so then what I think is my final design with backplate on the right. I use a GWS reverse rotation prop cut down to scale size and shape (which is required for the spinner to fit). I played with the gear doors, but haven't figured out how to model them properly. Those will be better in sheet styrene I think, and I have plenty of that. Working on fully scale landing gear now, scaled down from my 1/6 scale design. I'll use some printed, and some metal parts. Should be cool and a lot faster/cheaper to make than all metal.
Posted by spinnetti | Nov 02, 2014 @ 05:45 PM | 11,480 Views
For once a part came out on the first try. Design is close, but until I see better source pictures, not sure about the mount to the airframe. This is a scale type thin wall inlet that can be used to vent the airframe.
Posted by spinnetti | Nov 01, 2014 @ 05:20 PM | 11,568 Views
Working on the exhaust shields and exhaust stacks. Having to learn some new CAD skills to do this right. Here's the shield so far. As I looked closer, the shape at the back is wrong. Fixed (CAD image is correct), and printing another.... Back to working on the exhaust stacks.

** Update. Scale exhaust feature are just too small for the resolution of my printer. Had to pretty much totally redesign, but looks good enough. Certainly better than the original foam blob.
Posted by spinnetti | Oct 26, 2014 @ 11:02 AM | 11,005 Views
Printed up scale front and rear spinners for my Lanyu Do-335 that I designed some time ago on my new 3d printer...

Find them here on Thingiverse: http://www.thingiverse.com/Spinnetti/designs
Posted by spinnetti | Jun 07, 2014 @ 05:23 PM | 12,590 Views
Google this one.... Some folks at RCscale wanted some big flapjack gear, so did 5 sets of these. Main legs are stainless steel which is no fun to bore and mill! Overall length is over 17" for the legs!
Posted by spinnetti | Mar 22, 2014 @ 02:47 PM | 12,542 Views
Took a break for a while, and am dabbling a bit this weekend. Finally got around to making all the tiny little fasteners necessary to finish the Fw-189 gear.... Tedious! Decided that's my least favorite bit. Here's the 189 gear in ready to install state. I decided the spring rate was a bit too stiff, so will order different springs, and use two different springs to give variable rate - softer for realistic looking ground handling in the grass and the little bumps, and a stiffer one to soak up the big hits when the softer bit bottoms out.
Posted by spinnetti | Jan 13, 2014 @ 12:41 PM | 12,726 Views
Did some nose gear updates and the nose retracts last week, but forgot to post.