My simplest FPV buggy 'HuanQi 739' buggy still my bess 739 w 12t favorite all day speed 2WD basher.  Took it out for a spin chasing around the public paark, street and parking lots.  Definately less parts to mingle to get it started on the spot and being 2WD means less stress on drivetrain and less cleaning. Sunday 'Thrill for Speed' was satisfiying to drive with lots of controlled differential gear slipping putting cornering control skills to the test.  Yeah! really happy with my driving skills!

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