SMALL - espritmodel.com SMALL - Telemetry SMALL - Radio
spinnetti's blog
Posted by spinnetti | Dec 02, 2014 @ 01:15 PM | 1,230 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 | 1,453 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 | 1,832 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 | 1,314 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 | 1,996 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 | 1,791 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 @ 06:20 PM | 1,880 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 @ 12:02 PM | 1,574 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 @ 06:23 PM | 3,069 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 @ 03:47 PM | 3,082 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 | 3,352 Views
Did some nose gear updates and the nose retracts last week, but forgot to post.
Posted by spinnetti | Dec 30, 2013 @ 08:19 AM | 2,801 Views
Nose gear about ready, nose retracts next...
Posted by spinnetti | Dec 26, 2013 @ 11:23 PM | 3,540 Views
Put a bit of time on the 335 today, getting started on the nose gear.
Posted by spinnetti | Dec 22, 2013 @ 11:04 PM | 3,061 Views
Almost got it..... lots of little details to actually make it production worthy yet though.
Posted by spinnetti | Dec 20, 2013 @ 09:03 PM | 3,721 Views
Maybe one more work day and "Round 1" will be done.
Posted by spinnetti | Dec 19, 2013 @ 08:12 PM | 3,343 Views
Started on the Ta-154 Nose gear today... Made pretty good progress...
Posted by spinnetti | Dec 18, 2013 @ 05:57 PM | 3,306 Views
Made up a few of my second gen Storch spinners. These are a little more robust, allow use with more types of prop and are bit cheaper, but requires you to cut off your standard prop adapter to match.
Posted by spinnetti | Dec 18, 2013 @ 12:19 PM | 3,088 Views
I did a summary post with most of my landing gear projects over at scale builder...
http://www.rcscalebuilder.com/forum/...781&PN=1&TPN=1
Posted by spinnetti | Dec 18, 2013 @ 11:35 AM | 2,917 Views
Figured out both how to model and to make the upper mount. Also did another round of refinements on all parts. Ta-154 Mains about done, nose gear up next...
Posted by spinnetti | Dec 15, 2013 @ 06:58 PM | 3,556 Views
Little Detour to start the Ta-154 Mains.... Haven't figured out how to "draw" or to make the upper mount yet..