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xyzzzach's Lego Technic Automatic Synchro Drives


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#1 DLuders

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Posted 21 October 2011 - 02:21 PM

"Gearhead" AFOL xyzzzach recently posted this YouTube video of a Lego Technic Mini Automatic Synchro Drive unit.  "The chain spinning on the perimeter is on one end of a differential and the system that turns the syncro-drive (all four wheels at once) is on the other. When resistance is felt on the chain (running into wall), the power transfers through the differential to the sincro-drive turning mechanism. The power follows the path of the least resistance. No sensors but it call still detect and change course, all mechanically."



It joins his larger Synchro Drive which he says is "One of my favorite inventions. The ring gear spinning on the perimeter is on one end of a differential and the system that turns the sincro-drive (all four wheels at once) is on the other. When resistance is felt on the ring gear (running into wall), the power transfers through the diferential to the sincro drive turning mechanism. The power follows the path of the least resistance. No sensors but it call still detect and change course, all mechanically."

Maybe he could add a suction device to make it one of those robotic room vacuum cleaners!   :sweet:



#2 timslegos

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Posted 21 October 2011 - 10:52 PM

Wow thats ingenious!!  I never would have even thought that to be possible!!  Deffinitly one of the more original MOCs lately.

tim

#3 Burf2000

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Posted 24 October 2011 - 02:35 PM

I am sooo going to build a massive version of this.  Imagine a 5ft tall 2ft round version.  I could just let it go round the house!

#4 Burf2000

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Posted 30 October 2011 - 02:29 PM

Well after planning it in my head via a train journey.  I made my own version of the Automatic Synchro drive.  I did not even look at a single online reference.  This is just a prototype for me to scale up.

Quite chuffed, it took around 2 hours to make and is the 2nd thingy I have built in studless.



#5 timslegos

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Posted 30 October 2011 - 07:17 PM

Very nice prototype!  How large are you going to make the actual machine?

tim

#6 Burf2000

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Posted 31 October 2011 - 09:58 AM

View Posttimr, on 30 October 2011 - 07:17 PM, said:

Very nice prototype!  How large are you going to make the actual machine?

tim

I want the spinning ring to be monorail size lol  So I guess over 2ft round

#7 timslegos

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Posted 31 October 2011 - 11:57 PM

View PostBurf2000, on 31 October 2011 - 09:58 AM, said:

I want the spinning ring to be monorail size lol  So I guess over 2ft round
Thats huge!  Anyway, i cant wait to see it!  Don't forget to post WIP photos.

tim

#8 LEGO Guy Bri

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Posted 01 November 2011 - 05:41 AM

That is awesome! It put a huge smile on my face with a couple chuckles... I cannot believe the complexity of gearing on this thing and it's fluid motion. This is really neat to watch!  Posted Image
-I don't tell you how to tell me what to do, so don't you tell me how to do what you told me to do... I know when to use finesse

#9 aeh5040

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Posted 06 November 2011 - 07:59 AM

This is indeed a very clever invention (among many on xyzzzach's youtube channel).  I was also inspired to make my own studless version of this a few years ago!!  I also made instructions for mine here.



I've been interested (some people might say obsessed) in purely mechanical (non-electronic) obstacle-avoiding robots for a while.  Here are a couple of my other attempts at this:





And here is one by someone else:
Posted Image

Edited by aeh5040, 06 November 2011 - 08:03 AM.


#10 Jurgen Krooshoop

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Posted 06 November 2011 - 10:45 AM

Very cool idea !

#11 DLuders

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Posted 06 November 2011 - 01:51 PM

I built Aeh5040's Automatic Synchro Drive gizmo over the weekend, and it works great.  I converted the HTML file and associated images into one, 1.8-MB here file (via MegaUpload SkyDrive).  His Brickshelf gallery has an LDraw file and photos.

Posted Image

Edited by DLuders, 08 February 2012 - 12:56 AM.


#12 DLuders

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Posted 10 March 2012 - 10:48 PM

Posted Image Posted Image

[BUMP]

ISOGAWAYoshihito posted this YouTube video of a "Lego UFO That Cannot Fly".  It is a simpler version of the Automatic Synchro Drive (which changes direction when striking a wall or fence).  Pictures appear on his website.

  Posted Image

#13 timslegos

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Posted 10 March 2012 - 11:30 PM

Very cool.  It reminds me of the windows screensaver with the cube bouncing back and forth.

tim

#14 Burf2000

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Posted 13 March 2012 - 09:55 AM

Now thats a clever way of doing it!




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