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 Technic / 7104
  How much can you shrink a dual differential drive?
 
Hi all, I've got an intriguing little MOC coming up that hopefully will interest both the technicheads and the robogeeks. It is a tracked vehicle with a twist, but you'll have to wait to learn all the details ;-) In the meantime, here is something I (...) (23 years ago, 19-Mar-02, to lugnet.technic, lugnet.robotics)
 
  Re: How much can you shrink a dual differential drive?
 
(...) Well, I think several people have delved into this, but here's my contribution (URL) It doesn't solve the "dual speed" problem, but it's fairly small, and can be reduced further. ROSCO (23 years ago, 19-Mar-02, to lugnet.technic, lugnet.robotics)
 
  Re: How much can you shrink a dual differential drive?
 
(...) Excellent color coding in your pics. Regrettably, I have no practical advice. When I built the differential drive in Dave Baum's book, I was dumbfounded by the principle. I look forward to to seeing what is clearly a demanding project. - Kyle (23 years ago, 20-Mar-02, to lugnet.technic, lugnet.robotics)
 
  Re: How much can you shrink a dual differential drive?
 
(...) snip (...) Here's yet another shrunken dual differential design. It uses worm gears to drive both differential housings as a space saving measure. This also the adds the feature (?) of a bit more gear reduction. There's a few pics of the (...) (23 years ago, 20-Mar-02, to lugnet.technic, lugnet.robotics)
 
  Re: How much can you shrink a dual differential drive?
 
(...) Thanks a lot, Rosco. I think I'm going to go with Stefano Prosseda's variation, which you also mention on your webpage (URL) clearly didn't quite understand the concept and now see how my design had way too many gears only to accomplish (...) (23 years ago, 20-Mar-02, to lugnet.technic, lugnet.robotics)
 
  R: How much can you shrink a dual differential drive?
 
Hey! That's a wonderful design! I wish I had done this! ciao stefano (...) (23 years ago, 20-Apr-02, to lugnet.technic, lugnet.robotics)
 
  R: How much can you shrink a dual differential drive?
 
(...) had (...) feeding (...) I made also a "one-way" version, it's built in the undercarriage of this: (URL) basically the one above, but with two gearboxes at the input ports. In this way, I think the best design it's undoubtly the Doug Carlson's (...) (23 years ago, 20-Apr-02, to lugnet.technic, lugnet.robotics)
 
  Re: How much can you shrink a dual differential drive?
 
(...) I had missed that. Luckily Stefano's post highlighted the thread again and I found this wonderful device. Congratulation, Doug, very compact and nice design indeed. Ciao Mario (...) reduction. (...) (23 years ago, 22-Apr-02, to lugnet.technic, lugnet.robotics)

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