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Subject: 
Re: LEGOdometer
Newsgroups: 
lugnet.technic, lugnet.trains
Date: 
Tue, 5 Aug 2008 15:25:52 GMT
Viewed: 
20942 times
  
In lugnet.technic, Philippe Hurbain wrote:
Very impressive! I don't know what is the most amazing: the odometer
itself or the extensive write-up ;o)

Thanks!  Both were fun ;)


Would you have more details (MLCad?) of the gearing/ratcheting between dials?

I don't yet, though I can easily do that.  The 4-spoked technic joiners, when
turned, rotate the 16T gear at the opposite end of the dial.  That gear then
connects to two idler gears which drive a 40T gear; that 40T gear then connects
through the framework to the next dial.

The ratchet mechanism is simply a rack gear on a loose technic pin that
interfaces with the 40T gear to ensure that it only rotates in one direction.

I'll see what I can do about modeling it.


And BTW, did you see this:

I had not seen that.  It's ... it's ... it's gorgeous!  I'm stunned.  I've been
staring at it all morning, dissecting it, and ithcing to get home and build a
version.  I think this would work better than my cog-and-pin method, and I'm
dying to try and implement this right away.  I love the aesthetics of its
functioning.

Thanks for the link!  I expected a longer downtime before Rev. 2.0, but I don't
think I can wait.



Message has 3 Replies:
  Re: LEGOdometer
 
(...) It would certainly help my slow mind ;o) Though I think I got it through your explainations. (...) Very elegant and parts savvy, but I am not sure it would provide a design as compact as yours. (...) Sorry to disturb you ;o) Philo (16 years ago, 6-Aug-08, to lugnet.technic, lugnet.trains)
  Re: LEGOdometer
 
(...) I'd love to see what you come up with! however I fear Philo may be right about it being too large. Your mechanism is shorter at 3 studs (2 cogs and a support) my chain precession drive is 4 studs long. Also the precession mechanism needs 9 (...) (16 years ago, 9-Aug-08, to lugnet.technic, lugnet.trains)
  Re: LEGOdometer
 
(...) Even with that explaination, I just can't seem to get the spacing and the gearing right between the dials. If you have the time, please, I would like a visual aid of the between walls and the between-dials gearing. When I first saw this, I (...) (15 years ago, 26-Mar-10, to lugnet.technic, lugnet.trains)

Message is in Reply To:
  Re: LEGOdometer
 
Very impressive! I don't know what is the most amazing: the odometer itself or the extensive write-up ;o) Would you have more details (MLCad?) of the gearing/ratcheting between dials? And BTW, did you see this: (URL) (16 years ago, 5-Aug-08, to lugnet.technic, lugnet.trains)

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