1. Remove cover, disconnect USB at PC and pedal cable at interface module.
  2. Remove steering unit from clamp assembly.
  3. Remove steering wheel and paddle shifter.
  4. Reinstall steering wheel only, using supplied short wheel screws.
  5. Tape wires to hub collar to avoid damage.
  6. Loosen hub bolt, hold steering wheel to prevent steering shaft from turning. Remove tape, remove steering wheel.
  1. Insert 3/8"-16 bolt into hub, pull on bolt to remove hub from steering shaft, leave hub attached to hub plate.
  1. Disconnect Hub cable in interface module, carefully remove from interface module
  2. Remove 6 hub plate bolts, remove hub plate assembly.


  1. Remove preload tension by unscrewing preload screw.
  2. Remove springs.
  3. Remove preload adjuster screw.
  1. Remove cam.
  1. Remove cam mounting plate and spacer.
  1. Loosen FLDS screws.
  2. Move FLDS cylinder to loosen belt.
  3. Remove FLDS steering shaft pulley screws.
  1. Disconnect potentiometer wires, do not pull on wires.
  2. Loosen pot coupler screws.
  3. Remove potentiometer and pot coupler.
  1. Remove all cables and grommets from chassis.
  2. Remove interface module screws.
  3. Remove interface module.
  1. Remove rear leg.
  2. Remove potentiometer mount, rear leg mount, spacers.
  1. Remove spring arm.
  2. Remove FLDS steering shaft pulley and belt.
  3. Remove stop bumper.
  4. Remove main bearing housing/steering shaft assembly. Access bolts through access hole in stop plate.
  1. Install 330 degree main bearing housing/steering shaft assembly. Tighten bolts securely.
  1. Install rear leg mount bracket, pot/encoder spacers, and encoder mount plate, tighten securely.
  2. Install rear leg.
  1. Install FLDS steering shaft pulley. Tighten screws securely.
  2. Position belt.
  3. Install stop bumper - first tighten small screw only enough to remove looseness in screw, it must not compress the bumper. Tighten large bolt very securely.
  4. Install spring arm.
  1. Install cam spacer and cam mount plate, tighten cam mount plate screws lightly.
  1. Tighten all FLDS cylinder screws lightly then loosen 1/2 turn.
  2. Be sure belt is properly positioned in grooves of both FLDS pulleys.
  3. Tension belt by pulling FLDS cylinder with one hand and while continuing to pull tighten 2 of the screws with other hand. Rock steering shaft 90 degrees in both directions to seat belt. Loosen screws 1/2 turn and tension again. Pull tightly by hand but do not use any tools to pry the cylinder. Retighten all 4 screws.
  1. Install cam pointed end up, inline with shaft keyway, tighten screws securely but not extremely tight.
  2. Loosen cam mount plate screws 1/2 turn.
  3. Install new 330 degree preload adjuster screw.
  4. Install new 330 degree extra heavy spring.
  5. Screw adjuster screw in only until there is no remaining vertical looseness in spring/arm assembly when spring arm is moved up and down by hand.
  6. Turn preload screw in 2 turns further and no more.
  1. Install hub plate assembly. Be very careful to orient brackets correctly.
  2. Lightly tighten the 4 upper hub plate bolts, leave the lower 2 bolts loose to allow re-mounting on table or cockpit mounting bracket.
  1. Loosen the top 4 bolts 1 turn. Carefully slide bracket ends up or down as needed to align tops of cover mount brackets with top edges of hub plate and main chassis plate.
  2. Tighten top 4 bolts very securely.
  1. Install hub locating key in steering shaft keyway.
  2. Place hub on steering shaft.
  3. Install hub retaining bolt and washer.
  4. Install steering wheel with supplied short screws.
  5. Securely tighten hub retaining bolt while holding steering wheel to prevent steering shaft from rotating.
  6. Remove steering wheel.
  7. Install steering wheel/paddle shifter assembly in preparation for centering alignment.
  1. Hold cam stationary and adjust steering wheel centering. It is very important to keep cam stationary during this process. If the steering shaft does not rotate for adjustment within the cam, the cam mount plate screws may need to be loosened another 1/4 turn.
  2. Wait a minute for the FLDS mechanism to center and then inspect centering of wheel. If not satisfied perform additional adjustment.
  3. When satisfied lightly tighten the top cam mount plate screw with the supplied short 5/32" hex wrench, wait a minute and check centering again to be sure nothing has moved.
  4. Back off spring preload adjuster and remove spring.
  5. Turn wheel as required to gain access to the two lower cam mount plate screws and lightly tighten both.
  6. Securely finish tighten cam mount plate screws starting with the top screw.
  7. Reinstall spring. Adjust preload screw only until there is no vertical looseness in the spring/arm assembly.
  8. Screw the preload adjuster screw in 1 turn further only.
  1. Turn wheel all the way to stop clockwise, hold it there, and closely examine the relationship between the spring arm and the left lower black hub plate spacer. There should be no contact between the two parts.
  2. Do the same when the wheel is turned to stop in the counter-clockwise direction.
  3. If the two parts contact each other, or it isn't obvious there is clearance between the two, mark the location on the arm where contact occurs or where it could occur. Remove the arm and grind or file approximately 1/32" (1mm) of clearance at the marked point on the arm. Reinstall the arm and inspect clearance again.
  4. Remove steering wheel and paddle shifter.
  1. Position pot/encoder coupler on steering shaft, do not tighten screws.
  2. Position the timing mark on the end of the encoder shaft so that it will be horizontal when installed, and it should be oriented so it points toward the FLDS side of the steering unit.
  1. Assemble one mounting screw position (preferably one of the top two hole positions) in this order: #10 x 1 1/4 inch mounting screw, encoder guard plate, 3/4 inch spacer tube, encoder/plate, 3/16 inch spacer tube.
  2. Insert the mounting screw into the mating hole in the encoder mount plate, be sure to carefully align encoder shaft with hole in coupler to assure smooth insertion into coupler. Turn screw in to secure but leave slightly loose.
  3. Assemble remaining 3 screw positions, tighten moderately.
  1. Position coupler to grip both the steering shaft and encoder shaft equally. Verify position of mark on encoder shaft, adjust if necessary. Tighten coupler screw on encoder side of coupler.
  2. Very lightly snug coupler screw on steering shaft end of coupler just until there is a slight drag on the coupler when it is rotated slightly on the steering shaft.
  1. Connect USB cable to USB port on ECCI Digital One interface board.
  2. Place ECCI Digital One interface module in steering unit chassis.
  3. Connect hub cable and secure with cable tie.
  4. Connect encoder cable to encoder.
  5. Reinstall interface module retaining screws.
  1. Connect USB cable to PC
  2. Go to Windows game controller calibration utility and select ECCI Digital One device
  3. Go to steering calibration window and select to display raw values
  4. Rotate encoder coupler 90 degrees clockwise from its start position, then go back 180 degrees to 90 degrees counter-clockwise from its start position.
  5. Slowly rotate coupler back toward start position. Stop turning when raw values are near or at 0 (within +/- 5).
  6. Very carefully tighten encoder coupler screw on steering shaft end of coupler. If you move it during tightening and cause a change in values you will need to loosen and re-adjust and then re-tighten.
  7. Use 1/2 inch wrench on hub bolt, or reinstall steering wheel to run steering lock to lock. Return wheel to center and wait a minute for the FLDS to finish centering. The raw value should be within +/- 10 of the 0 position. If not you may want to fine tune the encoder position again.
  8. Disconnect from PC, finish re-assembly of cover, clamp hardware, steering wheel and paddle shifter. Reconnect to pedals and PC, re-calibrate, and use. We recommend calibrating after every shutdown of power to the interface (PC shutdown, USB cable disconnect, etc.).


***** Do not install for 330 degree operation *****

Optional 240-180 Degree travel limiter kit

>>> Do not install for 330 degree operation <<<

  1. Back off preload adjustment screw, remove spring.
  2. Rotate steering shaft as shown to allow first 2 screws to be inserted. Image shows interface module removed, it is not necessary to do this but it could be easier to install the limiter dependng on the tools available. The interface module is removed in the images for clarity.
  1. Place travel limiter mount bar in position and install 2 mounting screws through bar and into shaft plate. Leave screws slightly loose.
  2. Place LH stop tab in position and install 2 stop tab retaining screws, again leave slightly loose.
  3. Rotate steering shaft to expose mounting holes for other side of travel limter. Install mount bar screws and RH stop tab.
  4. Tighten all screws securely.
  5. Install spring, turn preload adjuster screw in only until there is no more looseness in the spring arm when it is moved up and down by hand.
  6. Turn preload adjuster in 1 turn further only.
Front view of travel limiter/stop tab assembly