The Flat Tracker

I've had this thing runnin' about 6 times now.  I've rode it 3 times.  It's gettin' closer to completion.  It sounds great, and at 50+ years old now - the idea in my head to ride around a dirt track (and ride ice again) is fresh in my mind, but I just don't want to get hurt again.  I enjoy riding my street bikes so much, that twisting my knee, breaking a leg, etc. becomes more of a factor after you get older.  The thought of needing an electric starter on a motorcycle is what scares me the most.  I just need to hear this thing at revs, up against a wall on a dirt track somewhere - chest and leathers down on that low tank.  Rollin on - rollin off.  The slowest bike on the track 
That's my goal.