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LEGO models my own creation MOCpages toys shop E.R.T.W.D.
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E.R.T.W.D.
About this creation
Hi there LEGO-lovers,

I like motorized LEGO very much, but one thing I don't like is grinding gears, which occur when a drivetrain isn't constructed solid enough. The torque of the motor causes the gears to come apart, creating an awful clicking noise and reducing driving power. This mostly happens in a transversive gearing, since they have only a small surface to transfer the power. LEGOŽ has make an excellent part for this: the knob-wheel:


This part is compattible with no other LEGOŽ gear, only with itself, but provides a very nice transversive gearing.

I've created a drivetrain with this part, which includes a differential. It will be used in my next MOC, which is supposed to go quite fast. The design has 3 internal gearing options (as you can see in the video). If your model isn't too big, you could also use the combination of the 8-tooth and the 24-tooth:


But the 8-tooth gear isn't very strong. I've already damaged some when testing models which had flaws. These parts are normally omitted in drivetrains with much torque in my models.

Here's how you can make one:



Instructions & Images were made using MLCad


Building instructions
Download building instructions (LDRAW format)

Comments

 I like it 
  January 3, 2011
Thanx! I'm looking for some time to find fast ungrindeble RC fuctions! Im going to use it with a buggy-like model. Groetjes!! ;)
 I made it 
  January 27, 2010
Quoting Bonald 1101 Do you mind if I use the design? I'll give you full credit!
I'd be happy if you use it. That's one of the reasons for me to share it.
 I like it 
  January 26, 2010
Do you mind if I use the design? I'll give you full credit!
 
By Jurgen Krooshoop
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Added January 13, 2010
4-speed RC Sequential Gearbox  You are at the end of this folder.
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The background images used on this page are © Todd Lehman,
available at http://www.lugnet.com/fibblesnork/lego/backgrounds/


LEGO models my own creation MOCpages toys shop E.R.T.W.D.


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