C. Bechstein VARIO Stop Rail Installation Instructions Manual
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C. Bechstein VARIO Stop Rail Installation Instructions Manual

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C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS
C. BECHSTEIN VARIO Stop Rail
Installation instructions for pianos
Version number of this document: 002
Last updated 27 January 2020
This document is available in the current version
and in other languages as a PDF file.
© 2019, C. Bechstein Digital GmbH, Germany
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Summary of Contents for C. Bechstein VARIO Stop Rail

  • Page 1 C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS C. BECHSTEIN VARIO Stop Rail Installation instructions for pianos Version number of this document: 002 Last updated 27 January 2020 This document is available in the current version and in other languages as a PDF file.

  • Page 2: Table Of Contents

    C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS CONTENTS Required tools Parts list Stop rail Preparing the instrument Installation of the stop rail for pianos Fix the bushing onto the shaft mount Pre-assembly of the fixing brackets Mounting the stop rail...

  • Page 3: Required Tools

    C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS REQUIRED TOOLS 1. Countersink 9. Let-off tool 2. Tap M3 / M4 / M5 10. Scriber 3. Drill Ø 4,3 mm 11. Pozi screwdriver PZ2 4. Drilling machine 12. Torx screwdriver/ Bits T10, T20 5.
  • Page 4 C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS 16. Wood saw 20. Side cutter 17. Tweezer 21. Scissors 18. Beak forceps 22. Cutter 19. Pincers...

  • Page 5: Parts List Stop Rail

    C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS PARTS LIST STOP RAIL Stop rail with individual CBD-00086 division Fixing bracket left bass CBD-00087-L (A) & treble (C) Fixing bracket right CBD-00087-R (transition A / B) Fixing bracket straight CBD-00088 (transition B / C)
  • Page 6 C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS Wire rope clamp CBD-00093 Bowden cable joint CBD-00094 Set screw hexagonal CBD-00095 socket 2 mm, M4 x 5 mm Shaft connector bass - CBD-00096 middle long Shaft connector middle - CBD-00097 treble short...
  • Page 7 C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS Self-adhesive foam CBD-00102 rubber T-nut 5,0 mm x M4 CBD-00103 Lense head hexagon CBD-00104 screw 2.5 mm 4.8 M4 x 10 mm Flat head hexagon screw CBD-00105 2.5 mm M4 x 10 mm...
  • Page 8 C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS Big serrated lock was- CBD-00111 hers A5.3 mm Spacer slot screw CBD-00112 6 mm M5 x 55 mm Nut M5 CBD-00113 Additional set screw CBD-00114 hexagonal socket 1.5 mm M3 x 8 mm...

  • Page 9: Preparing The Instrument

    C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS PREPARING THE INSTRUMENT Before you begin with the installation, remove all necessary case parts, such as the upper panel, lower panel, the key fall, name-board, cheek-blocks and the action bolts for fixing the action.

  • Page 10: Installation Of The Stop Rail For Pianos

    C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS INSTALLATION OF THE STOP RAIL FOR PIANOS Fix the bushing onto the shaft mount Before you start mounting the stop rail, fix the bushing onto the four shaft mounts with the supplied self-adhesive felt. The bushing has to be inserted as shown in the illustra- tion and must not overhang.

  • Page 11: Pre-Assembly Of The Fixing Brackets

    C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS Pre-assembly of the fixing brackets Put the parts of the fixing brackets ready: • Hexagon socket screws M4 x10 mm • small serrated lock washers A4,3 mm • small washers 5,3 mm •...

  • Page 12: Mounting The Stop Rail

    C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS Mounting the stop rail Stick the self-adhesive foam rubber onto the T-profiles of the stop rail. The foam rubber must protrude evenly on both sides. Place the action on a table with the dampers pointing in your direction.
  • Page 13 C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS Now distribute the prepared fixing brackets, the slotted screws M5 x 16 mm with serrated washers A5,3 mm and the spacer screw M 5 x 55 mm with nut as well as the shaft connectors according to the illustrations below on the respective action brackets.
  • Page 14 C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS Transition treble - middle fixing bracket (straight) Bass fixing bracket (here: left) Place the stop rail parts according to the pitch with foam rubber in the direction of the action. The shaft connectors are placed with the small threaded hole downwards, with the large hole upwards between them.
  • Page 15 C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS To do this, fit the small serrated lock washers A4.3 mm onto the hexagon socket screws M4 x 10 mm and screw the shaft connectors together with the stop rail parts. (9) Shaft connectors screwed centrally.

  • Page 16: Mounting The Fixing Brackets

    C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS MOUNTING THE FIXING BRACKETS When installing the fixing brackets, make sure that the upper hole of the action bracket is used to fasten the brackets. The lower hole remains free for the damper slap rail.

  • Page 17: Mounting The Damper Slap Rail

    C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS MOUNTING THE DAMPER SLAP RAIL Slide the damper slap rail into the side of the action and turn it so that the screws can be easily tightened. Sliding in the damper slap rail.

  • Page 18: Mounting The Fixing Brackets In The Concert 8

    C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS MOUNTING THE FIXING BRACKETS IN THE CONCERT 8 This chapter describes the installation of the stop rail for action brackets with a threa- ded hole for the damper slot rail and an additional hole without thread.

  • Page 19: Mounting The Fixing Brackets For Action Brackets With Only One Hole

    C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS MOUNTING THE FIXING BRACKETS FOR ACTION BRACKETS WITH ONLY ONE HOLE Mounting with additional thread If no additional thread can be cutted into the action brackets, the fixing brackets can be fixed as follows: First remove the damper slap rail and the rubber spacers from the action.

  • Page 20: Mounting With Cutting An Additional Thread

    C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS Mounting with cutting an additional thread For action brackets with only one hole, a second hole can usually be drilled (a thread for the bracket fixing and a thread for the damper slap rail). Mark the position of the second hole at a distance of 15 mm (0.6“) from the centre to centre of the holes.
  • Page 21 C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS Remove the drill chips and fasten the fixing bracket.

  • Page 22: Adjusting The Stop Rail Outside The Instrument

    C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS ADJUSTING THE STOP RAIL OUTSIDE THE INSTRUMENT Setting the distance between hammers and damper drums Turn the stop rail so that the foam rubber points upwards. Now start adjusting the stop rail in the bass. Check the distance to the hammers running over it.

  • Page 23: Checking The Let-Off

    C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS Checking the let-off When adjusting the stop rail, also check the let-off. The stop rail must be turned so that it is at a right angle to the hammer shank and the entire surface of the hammer shank hits the foam rubber.
  • Page 24 C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS Please note that a change to the T-profiles (1st possibility) also changes the distance to the hammer heads when the stop rail is switched off. You can now work with the following parameters to achieve an optimum initial setting of...

  • Page 25: Adjusting The Stop Rail In The Instrument

    C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS ADJUSTING THE STOP RAIL IN THE INSTRUMENT Before you check this adjustment in the instrument, it is necessary to shorten the end piece in the treble. Then remove the metal chips. Cutting the end piece.
  • Page 26 C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS Once you have adjusted and checked all four points, you can now remove the action from the instrument and adjust the damper slap rail to the desired position. Now you should also tighten all screws of the fixing brackets and the stop rail.
  • Page 27 C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS After tightening the screws, check all four of the above points again and make sure that no hammer will strike through and touches the strings when the key is struck strongly. If you still hear noises from damper drums hitting the fixing bracket, you can use self- adhesive felt: Attaching the self-adhesive felt on the fixing bracket.

  • Page 28: Installation Of The Bowden Cable

    C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS INSTALLATION OF THE BOWDEN CABLE First mount the wire rope clamp on the angle depending on the piano model. Pianos up to 120 cm (4.74“) height. Pianos from 121 cm (4.75“) height.
  • Page 29 C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS 3) Mark the position of the angle on the 4) Now pre-drill with a 2.5 mm drill bit. screw holes. 5) Countersink so that the screw does not 6) Now screw on the angle with half-round touch the polyester later.
  • Page 30 C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS Now the hand lever is mounted below the keybed on the right side using two sink head screws 5.0 x 25 mm. Lay everything under the keybed without bends using cable clamps.
  • Page 31 C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS Now insert the Bowden cable from below into the wire rope clamp and tighten it with the size 8 open-ended wrench: Push Bowden cable into wire rope clamp. Tighten the nuts. Before mounting the Bowden cable joint, grease the joint shaft with the Bechstein special grease.
  • Page 32 C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS Cut the joint on the core of the Bowden Now insert the action into the instrument cablef. and draw the length of the stop rail shaft. Shorten the stop rail shaft and then deburr Align the stop rail again in right angle to the it.
  • Page 33 C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS Now reattach the joint pointing approx. 45° upwards. When tightening the screws, hold the wire slightly under tension on the joint with your finger: The joint should be fixed so that it is at the same angle up and down when the stop rail...
  • Page 34 C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS Use the 2 mm wrench to fasten the three hexagon socket screws: Then check the function and position of the stop rail in mute mode. Now you should move the lever about half way back until the lever is at right angles to the core.
  • Page 35 C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS Now shorten the upper end of the Bowden cable core flush with the upper edge of the joint: After shortening the wire, move the lever further back in the same direction. The stop bar releases the hammers.
  • Page 36 C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS Move the hand lever forward again. The stop rail should now be at a right angle to the hammer shanks: Note that the stop rail may tilt slightly due to play in the Bowden cable when the strike of the hammer is strong.

  • Page 37: Regulation

    C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS REGULATION Adjusting the let-off Before readjusting the release, check for striking through hammers. If individual hammers strike through, please correct the stop bar. In order to achieve a let-off as close as possi- ble, you can, if necessary, in consultation with the customer, allow light striking through hammers in the fortissimo.

  • Page 38: Initial Setup Of The Software

    C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS INITIAL SETUP OF THE SOFTWARE After all components have been installed, the sensors of the VARIO digital system must be calibrated. Without an initial calibration, the system does not generate any key and pedal information.
  • Page 39 C. BECHSTEIN VARIO · INSTALLATION INSTRUCTIONS FOR PIANOS • Press Start - the keyboard in the graphic will be colored. Please wait three seconds. • Now play one key after the other and „decolorize“ the keyboard in this way. •...

  • Page 40: For Assigning An Individual Bluetooth Identifier (Bluetooth Name)

    You have now successfully installed the stop rail in your piano. The work required to install the VARIO digital system can be found in the relevant instructions. SERVICE CONTACT If you have any questions, please contact the support of C. Bechstein Digital GmbH Phone: 0049 2832 9750 995 E-mail: service@bechstein-digital.com We are happy to help you.

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