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This photo illustrates the only issue we met at the
Gettysburg event, but also shows the single wheel bushing issue met during
controller testing in Michigan.
1. The bushing in the single wheel detached from the metal
ring. We solved this issue by making a small ring to sandwich the bushing. This
fix was implemented at the Gettysburg event and worked well
2. The effect of the torque on grass and other outdoor
surfaces is well shown especially on the FIRST swing arm.
We bent the left-side swing arm on the second day of fighting, blocking the
rotation of the second set of wheels, and throwing the tracks off.
We could not fix the second issue at Gettysburg, so we
just removed the first set of wheels on the left side, and finished the day of
The part that bent is NOT the road-wheel axle or the swing
arm axle, but the multi-layered 12-gauge laser-cut swing arm! It really
surprised us. The design of the laser-cut layered swing arm is now changed,
doubling its strength in the center, and adding a "wrap-around" outer