Thread: Discussion RC excavator CAT 320 build blog
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Old Nov 15, 2012, 01:07 PM
Caterpilar is offline
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Belgium
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putting together the bottom rollers for the chain (5 rollers on each side). Therefore I am using a 3mm copper tube with inner diameter 2mm. When I fit a 2mm threaded rod with two nuts, its holding the sides of the undercarriage very well. Tomorrow, when time permits, I'll do the top rollers.

So, except for the buckets, there is no brazing or welding required on the model







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