· Home | LEGO | TECHNIC | – Airtech Claw Rig | Instructions. Instructions for – Airtech Claw Rig. o · Download a PDF of this set. Set number: ; Name: Air Tech Claw Rig; Also known as: Technic Truck With Compress & Pneumatic System; Set type: Normal; Theme group: Technical . 28 Items ItemName: Lego Air Tech Claw Rig, ItemType: Set, ItemNo: , Buy and % parts, all in excellent condition, with instructions box and plastic.

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After being introduced to the wonder that instructoins the Lego pneumatic system with sets like BackhoeUniversal Pneumatic Set and the Power Cranethis set raised the bar even further.

It instrucitons literally packed with pneumatics, featuring an electric air pump no, the Unimog wasn’t the first one to have thisworking rotating claw with operator’s cabin, and an engine of course. More on this in the conclusion of the review. The average used price on Bricklink is as well.

The box is the same size as last years Logging Truckand the Super Car. The back shows the secondary model, which works along the ways of Bar Code Multi Set s main model.

If you look at the bottom left image, the different steering angles for the front axles is indicated. The inside shows the rest of the features of the main model, along with a schematic outline of the pneumatic circuit. The Electric Plate is also present in this set. It was only seen in this and the Space Shuttle. The tires is this set are the old 20×30 solid onesand this is the only set that has got 6 of them.

They sit on 20×30 rims. Nearly all of the pneumatic parts in this set are new this year; the smaller cylinder and the pump are all introduced with this set. The only common part, set aside the tubing and t-pieces, is the switch and the Pneumatic cylinder pump.

The turntable was present in no less than 4 sets this year, being a major improvement to its predecessor. There is also two differentials, and a Steering pulley to drive the compressor. A weight brick is also provided, only seen in one other Technic set, the Backhoe.

It weighs 55 grams. These are Technic cylinders. They only serve aesthetic purposes in this set, but it is possible to upgrade the set with Air Tanksavailible as of with the Pneumatics Add-On Set. I didn’t bother, because it’ll cost me nearly Euros. You can buy the tanks separately on Bricklink for about 7 Euros each. Last, but not least, the triangle was introduced this year to the family of thin liftarms.

Instructions for – Airtech Claw Rig |

instructionx The main model starts with the bottom of the chassis. The driveshaft connects with both the rear differentials. In a 6-wheeled vehicle, both rear axles needs a differential, since they turn at different speed through a sweeping turn.

The diffs are mounted opposite ways, because of the connecting axle inbetween. Each diff holds 3 14t spur gears.

Instructions For LEGO 8868 Air Tech Claw Rig

Two universal joints are used insgructions extend the driveshaft to the front. Axle connectors hadn’t been invented yet. It’s time to start with pneumatics. The first two cylinders rotates the crane assembly. The inlet of the first is routed to the outlet of the other, making them turn in the opposite direction of each other.


I’ve labeled all the hoses to remember what color they are in the instructions. The next step will make it all easier. That black brick holds all the hoses in the right place, no more need of marking each one. The transparent tubing is the heart of the system, and runs to all instrucctions switches soon to be placed. Here is a wonderful mechanic for you.

The turntable in this model is actually pneumatic driven. The switches are currently only held in place by the tubing underneath them. Some support will be built soon. The hoses are carefully routed through the turntable. Further ahead you can see how the switches are held in place by modified plates. A fake air tank is placed on each side. The transparent hose is the inlet hose for the pneumatic system.

The frame intsructions the crane is built as inatructions separate unit, then placed on the turntable. The big black brick in the back left is the counterweight. When the crane chassis is placed, it’s locked by a passing 12L axle, which goes through the axle and pin connector in the center of the inwtructions. It was hard to get a pic of this, so I had to up the contrast a bit. Instructiona crane is starting to take lwgo. You can see the operators seat in the back, and the electric motor contacts black 2×4 plate along with the inlet hose in the front.

Nearly finished now, with the engine compartment and windshield forming. The elgo boom is almost its full length. Rigid hoses with clips extends the tubing to the end. A V6 engine is fitted in the front boot, and the final piece of the boom is added.

The claw utilizes a small cylinder to work. The sleeping unit of the cab is made out of bricks, and will also house the battery box later. Speaking of battery box, here it is.

Lego set 8868 Technic Air tech claw rig

The roof has been completed with a HOG light, signal horns and exhaust pipes. For additional playability, the truck is Technic fig compatible, and allows two in the cocpit and.

While testing it’s strenght, I ended up grabbing a Mini Mobile Crane which it was able to lift, and stretch out. According to Brickset, the crane weighs 0,48 kgs. The secondary model also starts at the bottom, but it doesn’t use the differential, making the drivetrain much simpler.

The first cylinder is controlled by a switch at the 8886 side.

LEGO Air Tech Claw Rig Instructions , Technic

When I built this model, I realized how you have to cut the original tubing to fit. Glad I got some spare tubing from a previous order. Unfortunately this means the B-models trans tubing will be mostly of the grey kind.

The white thin liftarms here will attached to the rear axle later on. 8688 electrical extension wire runs all the way along the chassis. The compressor is made by using both rubber bands from the half-bush on the motor to a inshructions wheel. An engine crankshaft piece is then fixed to the pulley, giving the pneumatic pump an input stroke of 1 stud.


Next is attaching the cylinders for the front boom’s elevation. The rear end of the chassis is locked by two vertical bricks, and the 4 smooth grey 1×2 plates are positioned where the steering racks will go. I know this image looks confusing, but the main part is quite simple; The grey tubing connects to the compressor, and provides input to the two switches.

The black tubes connects all the cylinders to their respective outputs. The rear end of the chassis is reinforced by bricks, and the steering rack is finished. Because the 2nd axle’s connection point is further from the wheelhub, is turns at a lower angle. This contraption is attached to the control axle of the front pneumatic switch. It makes the switch turn when the motor has driven the mechanism to the end.

The second long pneumatic hose will retract the front cylinders. Rather than having two “air tanks”, this model combines four elements into one bigger, situated behind the drivers cabin. The bed is nearly finished, and you can see the battery box where the sleep cabin normally would be. Cab finished, moving on to the arm. The arm works similar to that of Barcode Multi-Set. The claw is very simple, like the one of the main model.

Two axles are joined with a set of 14T bevel gears, with an intermeshing 14T gear on each side. The claw’s teeth are fixed at an angle on each axle. As either one of the axles turns, the claw is closed. The only feature is grabbing somehing, and tossing it in the bed, which doesn’t tilt. This would be fixed in the next model, the The main model works fantastic, looks almost like a real truck, and is as solid as a brick.

The pneumatic functions are a joy to use, and this remains as my most played-with set to date. The only thing I missed was the in-cab steering wheel, but I don’t think there would be any room for it.

The secondary model is somewhat of a letdown. It takes innstructions lot of time to build, but doesn’t have an engine, and lacks the number of functions the main model has. Still, it is a good looking truck, and the 4 wheel steering is a nice touch. Too bad you’ll have to cut the tubing twice to make both models, but maybe pneumatic tubing was cheaper in What a fantastic way of demonstrating the possibilities of the Lego pneumatic system!

All the features are used in these two models, utilizing piston expansion as well as contraction to power different functions.