While disassembling my ACAV model for additional painting I noticed I have a new problem. Looks like excessive grease migration through the open bearings in the hull. Previous to this I had not seen any excess grease anywhere around the motors or drive sprockets, so it's a complete tear down for more investigating. It has spread to the first 3 suspension arms on both sides and at the corner and top on the front hull.
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So after taking everything apart the news is disappointing. All the hull bearings are open style inside and out. The size is 7x11x2.5 MM. A quick look around the net did not turn up any sealed bearing options. Closest are the size used on the Tongde M-60 7x11x3 MM that would stick out of the hull slightly and would need to have the inner bearing notch widened.
Not the best looking bunch.
Drive sprocket gears are held in with a c clip.
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