1970 Fox Minibike Part 7

I wasn’t happy with how high the bike sat in the rear, as this negatively affected caster in the front.  Positive caster is the rearward tilt of the steering axis as views from the side.  It is a stability angle.  Too little and the bike would be hard to keep in a straight line.  Also the spring in the rear was too weak and provided no means of adjustment.  




I ordered a new adjustable heavy duty spring and shock from Keith at PhatMX. He also sold me a set of handlebar mounts for the new 13” bars I ordered online.  They were the closest thing to the original look, I could find.


As the new larger spring would only raise the rear even more, I cut the lower shock mount off the swing arm and rotated it back.  This lowered the rear, which increased the caster at the front and allowed me to stiffen up the spring without raising the rear of the bike.


Here is the relocated mount below.  It was rotated about 30 degrees rearward, allowing the longer spring to begin at the correct ride height.  I wanted the bike level with a rider on it.


This photo shows the new handlebars installed on the bike and the ad where they came from.




Stay tuned! Brake pedal and exhaust are coming up!

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