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12

In the UK shop, there are currently two sets: The Unimog U 400 [set:8110] which uses the motorised "compressor" to supply the power (as opposed to the manual sprung pump). And the Tractor with Log Loader [set:8049] which uses the manual pump: The other sets that look like they have piston arms (such as [set:8043]) are actually using "linear ...


6

From the post about Vertigo (the precursor to Rory's answer), TrilogyGlenIvy (the creator) stated: Suction cup hangers were easily located in stores. Drilling a small hole and inserting a short section of copper tubing (1/8 “ or ~3 mm diameter) along with some vinyl glue produced the feet that I used. Basically they are usually found in DIY/Home stores ...


6

The set that had the most pneumatic cylinders was the Lego Technic Backhoe, with something around 10. Unfortunately, this set is discontinued. You can, however, buy it on Bricklink. It is, by far, the coolest pneumatic Lego set ever released.


4

This is one half of a "hydraulic" cylinder used like in the bucket of 7685-1: Dozer. This element is Fric. Element, Cylinder and used often used in combination with Stick 6M W/Flange


4

The parts become leaky due to the seals inside the pistons deteriorating. Typically, the seal is made with an "o-ring" - a circular rubber band (cross section as well as the shape) - if this is the case in the LEGO pistons, and then it's possible the o-rings are made with similar rubber to the LEGO rubber bands, and then they will deteriorate over time in ...


3

Apprently, it is possible to generate up to 37psi with LEGO pneumatics parts only. LEGO penumatics can withstand more, however. Engines similar to the one you want to build can work with a recommended pressure intake of 90psi; a maximal (but not recommended) of 120psi is mentionned. So I think it all boils down to the pressure your N2 or CO2 tanks can ...


2

In this discussion at LUGNET the conclusion seems to be that you could use dry graphite if you are comfortable with graphite powder everywhere. Else you should try lithium grease or canola oil. There is also a serious warning about using hydrocarbon oils that could damage the rubber seals inside pistons and the rubber air tubes. One poster also noted that ...


2

It's difficult to suggest parts without knowing what sets are in your collection. Here are some thoughts to help with assembling this project. Notice that the snake consists of the following pattern: float tube -> pump section -> float tube The float tubes are the elements that keep the heavier pump sections afloat. You'll need something similar to ...


1

Screwjacks! Key components would be Technic, Gear Rack 1 x 4 and Technic, Gear Worm Screw Application of said parts are left as an exercise for the reader, though since OP says they're not using Technic, this might be a moot answer.


1

Definitely Vertigo III - superb build project



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