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Pan Scotch-Yoke Tie Bar
This is the red tie bar for the 'SG90 Animatronic Eye Mechanism' kit. It is 74 × 30 × 5 mm and connects both eye-yoke pan levers through Ø3.4 holes on a 60 mm pitch, using M3x8 SHCS and M3 washers. Its centre tongue has a 2.6 mm slot (end centres 14 mm apart) with 0.4 mm chamfers on both faces. The M2x16 pin on the SG90 pan horn runs in this slot, forming a scotch yoke that pans both eyes together.
🧩 Part of the SG90 Animatronic Eye Mechanism (links both yokes; pan servo slot drive) kit.
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