高いけどキター
9chって操作大変そうだ
http://store.rc4wd.com/112-Scale-Earth-Digger-4200XL-Hydraulic-Excavator-RTR_p_1587.html
1/12 Scale Earth Digger 4200XL Hydraulic Excavator (Ready to Run)

100% CNC machined aluminum (except track and hydraulic pump)
Custom 9 channel 2.4Ghz radio
High Intensity Light (Super bright)
Optimized steel hydraulic system
Scale operator station (can fit a driving figure and seat)
Steel molded tracks
Massive brushless system
Efficient under carriage with tracks
Reliable hydraulic valve and adjustable pump
Heavy duty hoses
Bearing based undercarraige design
Powder coated in yellow
Digging force: 6kg/11pounds
Scale: 1:12
Height of cabin: XXmm/XXinch
Length: XXmm/XXinch
Width: XXmm/XXinch
Height: XXmm/XXinch
Deadweight: 20kg/44lbs
Operating pressure: 12Bar, 174psi
30 days limited warranty