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Subject: 
Re: I wish Lego made an "Anti-Backlash Gear"
Newsgroups: 
lugnet.robotics
Date: 
Mon, 9 Apr 2001 07:31:38 GMT
Viewed: 
9511 times
  
Rrrrrrrrr.....

In lugnet.robotics, Dean Hystad writes:
In lugnet.robotics, Eric Sophie writes:
Listen guys, I'm not playing around with a "Building toy" here,

look,

When working - creating on this scale, you begin to demand the highest
preformance from all aspects of Lego.

Looks like toys to me.  Really incredibly cool toys!

Tilman's post supporting my "Toy" claim mentioned how torsionally flimsy the
technic axles are.  This could be used to take the backlash out of a gear train.

Pull out four 48 tooth gears, two 8 stud technic beams, and two 8 stud
technic rods.  Mesh two of the 48 tooth gears by sliding them onto the rods,
and inserting the rods into the holes of one of the beams.  Slide the second
beam over the other end of the rods and attach the remaining gears to the
open end of the rods.  If everything is aligned properly, the gears will
rotate freely, and there will be a little bit of play.  While the gears on
one side are meshed, disengage one of the gears on the otherside, rotate it
one tooth, and reengage.  The gears no longer rotate as freely, but there is
no longer any backlash.  Slip 3 or 4 teeth and the gear train begins to get
really stiff.

Nothing too brilliant, but it does the job.  Probably not all that original
either, but it just occurred to me.



Message has 2 Replies:
  Re: I wish Lego made an "Anti-Backlash Gear"
 
Sorry Eric. I certainly didn't mean the word "toy" to be derrogetory in any way. Must be a cultural thing. My job is to create room sized "toys" which weigh several tons, contain thousands of kilowatts of potential and/or kinetic energy, and require (...) (23 years ago, 9-Apr-01, to lugnet.robotics)
  Re: I wish Lego made an "Anti-Backlash Gear"
 
(...) Doh!. And I just took this in school (in fact, am going to write an exam which this will appear on (methinks) thisafternoon. It's called "Locked Train", and allows for more even power distribution across multiple gears in a gearbox. Hmm...Now (...) (23 years ago, 10-Apr-01, to lugnet.robotics)

Message is in Reply To:
  Re: I wish Lego made an "Anti-Backlash Gear"
 
(...) Looks like toys to me. Really incredibly cool toys! Tilman's post supporting my "Toy" claim mentioned how torsionally flimsy the technic axles are. This could be used to take the backlash out of a gear train. Pull out four 48 tooth gears, two (...) (23 years ago, 6-Apr-01, to lugnet.robotics)

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