Yoke Travel Seat Reference. From Rudy's site
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Yoke Forward /Aft Travel Distance. From Rudy's site.
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Yoke Measurements. From Rudy's site
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Started with a CH Pro Yoke
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Open it up. We need the two pots, a spring, the circuit board and two bushings.
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Controller board.
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Mark your wires before cutting. There are some wires with same colours.
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Cut stem and notch it for wire, Cut one small and one larger wooden ring.
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Build the walls 14mm MDF
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Glue bushing inside smaller wooden ring.
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Insert into elbow and drill a hole in the bottom side for a bolt.
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Bolt should protrude just far enough to get a nut on over the flat bar.
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Push bolt head in between elbow and bushing so it can't turn.
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Drill a center hole in flat bar and secure with a nut.
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Flat bar secured. Bought at local hardware store.
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Glue bushing to large circle and screw into inside circle.
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Elbow fits on pipe.
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70 mm plumbing pipe with main pivot axle (threaded rod) running through it.
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Pipe is secured to pivot axle with nuts and washers on either side inside and out.
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Items to make the upper pulley insert.
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Assembled. Groove is made in dowel to allow wires to pass.
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Push insert until flush with stem and secure with screw. The other screw will keep the yoke stem from backing out.
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Run wire up groove and align the spring retainer with the notch.
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The rectangular piece at the bottom keeps the flat bar assembly from moving side to side in the pipe.
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Bolt on spring retainer. Also acts as yoke handle stop.
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Gears from old HP printer. Springs and turnbuckle from hardware store. Springs center yoke.. turnbuckle adjusts to 8 degrees forward. 60N dampers.
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Pitch pot in place with a simple mount.
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I used the design at Ian Sissons site. URL is in my Links page for more info..
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Long bolt is used as a tensioner for the belt.
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Soldering the connections. 14 conductors. Bolt and spring in place. Spring slightly long..may install a shorter one in future.
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Soldering the connections to the circuit board.
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Cut out the plastic cord retainer and installed where USB cord exits.
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Everything in place .
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Rear View painted in RAL7011
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Front View . Bottom covered in black vinyl
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