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LEGO models my own creation MOCpages toys shop Sidneys1's LEGO Pneumatic Engine #2Technic
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Sidneys1's LEGO Pneumatic Engine #2
A 4-Cylinder Lego Pneumatic Engine.
About this creation
This LPE (Lego Pneumatic Engine) is a 4-cylinder in-line model. This is currently the largest LPE I can make, since I only have 4 cylinders and two switches. My LPE #1 was only a two-cylinder, and was very slow, so I added two more cylinders to make LPE #2. I had some problems originally with powering it, because even after hooking up a small Lego pump to the buggy motor and pumping two large Lego pumps by hand, it was still underpowered. I finally solved the problem by introducing it to a bicycle pump, which, although providing the amount of air needed, could not keep up a constant flow. Another problem is that the 3rd and 4th cylinders tend to twist themselves, causing (in some cases) the motor to reverse its output. I look forward to building LPE #3 in the future. I hope it will have drilled-out intakes, silicon oil lubricant, and a constant 20-30 PSI feed.


Front of switching mechanism.



Back of switching mechanism.



Cylinders 1 and 2.



Cylinders 3 and 4.



Comments

 I made it 
  January 21, 2009
Quoting Darren Adams hmm ... this one looks different from the other one ... which one of your engines seems to work better ... #2 or #3 ?
#3 ran better overall. Its use of the flipper switch system reduced friction to the point where I could run it A-O-K off of one large LEGO pump.
  January 21, 2009
hmm ... this one looks different from the other one ... which one of your engines seems to work better ... #2 or #3 ?
 I like it 
  December 1, 2008
Very nice! Now, how about a radial engine?
 
By Sid Borne
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LEGO models my own creation MOCpages toys shop Sidneys1's LEGO Pneumatic Engine #2Technic


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