Crowkillers - Models

Jennifer Clark's JCB JS220 Track Excavator

Now you can build the ultimate LEGO pneumatic model, the JCB JS220 tracked excavator designed by Jennifer Clark. This model has almost 1700 parts and features 13 pneumatic actuators and pumps, 5 motors, and all the functions you'd expect from a scale model of the real thing:

Pneumatic bucket
Pneumatic dipper
Pneumatic boom
Motorized skid steer tracked drive
Motorized slew
Controller Works just like the Real Excavator

Electrical power for slew, drive, and differential track based steering. Boom, dipper and bucket are pneumatically powered, with all functions operated by a tethered remote controller that includes a four cylinder reciprocating pneumatic pump.

Full instruction Download $20

Login and Password for access will be provided after funds have been processed and then they will be sent to the e-mail attached to your Paypal account. If there are any problems, please e-mail me at ericblakbird@gmail.com and I'll be sure to promptly help you.

(Click to buy)

No corner was cut in the creation of the instructions prepared by Eric Albrecht (blakbird). The 164 pages include a 40 page technical introduction describing the features of the model and comparing them to the function of the real excavator. This fully illustrated section should tell you everything you want to know about the JS220 and about the way the model was designed to simulate it. The instructions themselves are 500+ steps rendered at 600 dpi so that they are suitable for high quality printing. All electrical and pneumatic connections are shown in detail.

Click on Picture to Access Instructions