Formula TKM 2-Stroke Regulations Clarification

Effective February 20, 2010

Torsion Bar Welding Ref Rule B3.3.11

In the light of questions received we clarify the method of attachment and
permanent welding which must be used for torsion bars if used in karts which
have them as an option.

• The torsion bars must be welded directly to the chassis permanently.
  Welding the clamps is not sufficient, it must be torsion bar to chassis
  direct welding. Torsion bar clamps must be removed.
   
• Although the exact method of welding is free (mig, tig, braze, etc) tack
  welds are not sufficient. The welding must be nominally continuous
  around each joint and at minimum, cover 75 per cent of the
  circumference allowing for areas which may be difficult to access.
  Again the word permanent is stressed. See pictures below:-

Picture of Acceptable Permanent Weld	Picture of Unacceptable Tack Weld