My EXCAV is sick...broken gears for the undercarriage track..it stuck in the mud for many weeks...too deep inside..and was not able to push herself out...damage the gears (expected already, because of actual design suppose to use bigger gears)
original straight bevel gears known to be not good, and now we found the solution to it.. Changing to bigger and better hypoid/spiral bevel gears... upgraded undercarriage jumbo gearing, look alike a grinder head, no problem to smash anything on its path..
climbing 30degree angle with no issues, see below:
also taking time to upgrade the radio system, changing to 9Ch TURNIGY TX/RX system...smaller, more hi-tech and complex.. fuh..too many switches now...using glider mode, coz EXCAV mode is not available at this moment..sigh! all the stick functions work exactly as per real EXCAVATOR. the track function is mod to use the 5th and 6th Ch... 7th Ch for Hyd pump/motor, and left 2 more Ch for extra things in future..
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http://my-rc-page.blogspot.com/