Instructables

My 123D Jansen Strandbeest Mechanism

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Picture of My 123D Jansen Strandbeest Mechanism
Depepepe.JPG
So this is a Strandbeest mechanism, a mechanism invented by Theo Jansen, a Dutch artist. This kinetic sculpture moves when on a slope, or as in Theo Jansen's creations, harnessing the wind's energy. I designed this kinetic sculpture using the complex but very accurate ratios of the original design. I used  Autodesk 123D, and later on tested and tweaked my creation in Autodesk Inventor's dynamic simulation program, but i created it using 123D. This contraption doesn't need any screw, bolt or anything, just to be printed out. I purposely did not include dimensions in my Intsructable, as not to constrain people's imaginations and ideas. As long as you follow the ratios and concepts from the following site, you should have a great, perfectly working, awesome Strandbeest.
 
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Step 1: Leg

Picture of Leg
Leg 123D_2.JPG
We'll start out with the leg. First like every part, we start with the sketch. The sketch is made to the original proportions of Jansen's original design, like all of the other parts. The image sketch is one of my first attempts, so it's slightly different from the final piece. Once you've finished with the sketch, you need to extrude the body, and give the two pivot points a little bit of height, above the main body, on both sides. After everything is to your liking, it would be better to fillet the edges on the main body parts, but not the pivot points.
juliadee9 months ago
IMG_6251.JPG

WOW, I want a 3D-printer - NOW !!! :D

FireCGun (author)  krummrey1 month ago

Don't we all!!!

juliadee9 months ago
(removed by author or community request)
FireCGun (author)  juliadee9 months ago
Wow it looks really awesome, I hope that everything will work fine. Can you please upload the changes that you made?
juliadee9 months ago
I've now printed all the parts, and am seeing two issues:

1) You seem to have allowed little or no clearance for the fit of many parts. In real life machinery there must always be clearance; you cannot have "line-to-line" fits. For the "connectors" (they are really shafts) in the bushings it's not a big deal because I can either drill out the bushings or design new connector shafts. But for the hex splined shaft that connects the centers of the wheels it is more of a problem; I think I'm going to have to edit the wheel file to add clearance for the spline.
2) Your BOM has one splined shaft part, which is about 24mm long. This is the correct length when it's connecting two wheels through a frame bushing. But for the two end ones I think it is too long, since the end ones only connect one wheel and a frame bushing.

Thanks for sharing your work on this project, I am looking forward to assembling this Beest and showing it off!
FireCGun (author)  juliadee9 months ago
I am so happy to hear that you are working on improving my work. I am new to this awesome world of engineering, and well be very happy if you updated me with the changes you made so ill learn them for my next projects. I knew that you cant have a "line to line" fits but I thought it was not that off a big problem (thanks for letting me know that it is), my plan was to use some sand paper. I think that I solved the the problem of the bigger hex shaft but, have it only in the final version in the thingiverse web site. If there is any way I can help I will be very glad too. Please upload me the final version your print. And really thanks a lot, I have gotten two comments that have really gotten my mode down, but seeing that some one is working and improving my work, for it to be printed out really made my day :)
juliadee FireCGun9 months ago
I've enjoyed Theo Jansen's work since learning of it years ago, and was excited to see your model appear on Thingiverse recently. I was unaware at the time that other 3D-printable models had been published. I wouldn't listen to anyone who says you "copied" anything; you obviously did a lot of work on this, and the differences between your interpretation of Jansen and others' are significant and readily apparent. When Thingiverse user "cyclone" stated that your model is "unprintable", that settled it for me: I had to print it :)
theprofessor19 months ago
All you really did was copy the project from cguin, i really like your design and all but you really just copied it from cguin. You should at least have cited him. I don't mean to be rude or anything, but it seems like someone beat you to it. You seem like you didn't mean to do this. I hope to see other instructables from you, you seem very intelligent, and creative.
FireCGun (author)  theprofessor19 months ago
I don't care if there are stuff that may look the same, I worked hard on this piece for a long time. So please don't say that i copped it from some one else, I can promise you that I did not.
SargentPepper9 months ago
I couldn't help but notice you used some design cues from this instructable: 3D Printed Theo Jansen Strandbeest . Cite what you use buddy.
FireCGun (author)  SargentPepper9 months ago
Actually I did not use it. Any ideas and design inspiration I used was from looking throw Google pic, and the link that i cited.
Cool, good luck!
JonnyBGood9 months ago
Simply awesome! I really wish I had the resources to build this. I love those kinetic sculptures.
FireCGun (author)  JonnyBGood9 months ago
My love for kinetic sculptures is why i made it and put so much time and detail in it so every thing will work nice and smooth. I really hope I’ll find a way to print it out!
Well a vote from me should get you a little closer to doing that! Keep making awesome stuff!
Jonny, costs should not be a problem though. Janssen built the strandbeest (=beach beast) from electric conduit pipe that costs pennies per metre
VEry nicely done! Have you attempted to print it out? are you going to be putting up the STLs? for download?
FireCGun (author)  Creative Hacker9 months ago
I tried to upload the STL but there was a problem with Instructables, and I'll try to upload it again as a ZIP file. No, i haven't tried to print it out but i currently don't have the means...
FireCGun (author)  FireCGun9 months ago
I uploaded the file, hope It'll work
try putting the STLs on Thingiverse and just put a link to it here.

When my printer is finally running i will give printing it a shot.

FireCGun (author)  Creative Hacker9 months ago
This one should work, I hope!
http://www.thingiverse.com/thing:166585

And if u print it out, send me pictures I am very exaited to see it in real life.
When I do I will let you know :D
Dr Me9 months ago
i bet you all didn't knew strandbeest, is dutch for beachbeast
It would be strange if I didn't know :)
FireCGun (author)  Dr Me9 months ago
I did!
audreyobscura9 months ago
This is awesome!
FireCGun (author)  audreyobscura9 months ago
Hey thanks! I worked really hard on it, and I'm glad its appreciated!
I'm gonna enter it in the 123D design contest, so look for it there..