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Subject: 
Turning with one motor
Newsgroups: 
lugnet.robotics
Date: 
Wed, 12 Jan 2000 15:45:06 GMT
Original-From: 
Simon Holt <SIMONH@NOP.COnomorespam.UK>
Reply-To: 
s.holt@nop+spamcake+.co.uk
Viewed: 
566 times
  
I am another one who got the RIS for Christmas.

I have built the prototype from the back of the manual that uses
one motor to turn both of the tracks with the differential.

The problem is I can't get it to turn when it goes into reverse.  I had
a look on the Lego web site that had a slightly different design but
that doesn't work either.  It either just clicks and turns normally or
when I try to tighten it with a band just locks up both wheels.

I've tried loads of different approaches with no success so I am
giving up and asking you lot, I'm sure there is a simple solution but
I can't see it.


Simon Holt
MIL Motoring Research
NOP Automotive
Ludgate House
245 Blackfriars Road
London SE1 9UL
Tel: +44 (0) 20 7890 9253 (direct line/voicemail)
Fax: +44 (0) 20 7890 9263
Website: http://www.nop.co.uk/automotive



Message has 2 Replies:
  Re: Turning with one motor
 
The ratchet arm doesn't stop the wheel from turning properly. If you play about with it it should do. Try changing the end bit --- I think I used a 3-axle to stick down onto the gear wheel, so you should have an inverted L shape where they just have (...) (25 years ago, 12-Jan-00, to lugnet.robotics)
  Re: Turning with one motor
 
(...) If you can't get that version working, try making a bot that drives forward with a plain differential (or even a solid axle, for simplicity) and uses a steering wheel (or wheels) which point forward when moving forward but twist sideways when (...) (25 years ago, 12-Jan-00, to lugnet.robotics)

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