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1903  |  1905
Subject: 
Re: RC control on Pneumatics, gearboxes and polarity switches
Newsgroups: 
lugnet.technic
Date: 
Wed, 9 Aug 2000 11:05:00 GMT
Viewed: 
1772 times
  
In lugnet.technic, Tobbe Arnesson writes:
Is the new-style pneumatics better then the old style? I mean from a
power point of view. I got the old kind with but one hose connection.
Yes you can say that.
In fact the old style uses press/suck system and the new style only uses press
That means that the suck action uses a sort of vacuum. This is always less
powerful then pressure.
And you can’t use an airtank.

The new style cylinders have a metal axle, so they don’t bent, see:
http://www.lugnet.com/pause/search/?query=5108-1

Is there a difference in the switches? It doesn't look like it, I've
been doing some research but everyone on the net is festuruing the
new-style pneumatics.
NO they are the same but used different


I reccon there must be a difference since the old 2x4 direction brick
is no longer needed. Does the switches direct the air instead? I mean,
is there an 'in' and an 'out' port on the switch?
see pictures

old style (notice the valve)
http://www.brickshelf.com/scans/8000/8851/8851-02.html


new style (no airtank)(the valve is in the new pump)
http://www.brickshelf.com/scans/8000/8837/8837-04.html
new style with air tank
http://www.lugnet.com/pause/search/?query=8299-1
new style compressor without airtank
http://www.brickshelf.com/scans/8000/8868/8868-02.html

this is a simple design drawing of an autopower-off compressor I've made.
I'm working on the ldraw drawing.(coming soon)
http://members.xoom.com/legorobotica/lugnet/compress.gif


greetings martyn



Message has 1 Reply:
  Re: RC control on Pneumatics, gearboxes and polarity switches
 
(...) Well, I think you can put two airtanks in the system right after the 2x4 brick that has the valves in the old system. One for vacuum and one for preassure. (...) airtight seal, thanks! (...) I bought the 8462 Tow Truck yesterday and I'm (...) (24 years ago, 10-Aug-00, to lugnet.technic)

Message is in Reply To:
  Re: RC control on Pneumatics, gearboxes and polarity switches
 
(...) It's 8868 I reccon, the same set that gave me the idea to this whole project :) I did build a compressor yesterday with a 'medium' sized old-style cylinder. I used two old style 9v motors and I didn't like the weak performance of the (...) (24 years ago, 9-Aug-00, to lugnet.technic)

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