This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment >>Another thing- often the action won't shift properly because there are screws in the dag which often impress themselves in the soft keyframe wood. You can screw them in (clockwise) because the cheek block will hold the keyframe, and it will free up the action to slide easily. I'm pretty sure that Paul has won the prize, although there is a 25% chance it is the stop bolt on top of the hammer flange rail that holds the action down in shipping. I used to sell Young Changs and Bergmans. What you are describing should be done on every piano as part of new piano prep, but especially to all Young Chang products. They seem to be particularly susceptible to this problem. If you are having trouble following Paul's description, the dags are 4 blocks of wood in the back of the action cavity screwed down to the keybed. They act as stops when pushing the action in. They also have a slot that the back of the key frame slides into which holds the back of the action down when the piano is tipped up. Usually the dag on the extreme bass end and the one on the extreme treble end has a brass screw screwed into that slot. The factory uses these screws as temporary stop adjusters for setting the strike point. This enables them to slide the action in and out for regulation without having to use the cheek blocks to properly locate the strike point. This is the sole function of these screws. In the field we use the cheek blocks for setting the strike point. The problem you are encountering is that the sliding line established by those stop screws is not parallel to the sliding line established by the cheek blocks. This causes the action to bind against those stop screws when attempting una corda. The remedy is simple: turn the screws in a full turn. You could also back them all the way out and throw them away. But leaving them and turning them in a turn does give you a roughly accurate strike point without the cheek blocks. After making this simple adjustment the cheek blocks alone will determine both the strike point and the sliding line of una corda shift, precisely what you want. It wouldn't be growing action brackets. Bergmans are not made in the Korea plant and they came out in the late 90's after the problem time period. Dean Dean May cell 812.239.3359 PianoRebuilders.com 812.235.5272 Terre Haute IN 47802 -----Original Message----- From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On Behalf Of Paul McCloud Sent: Thursday, August 25, 2005 7:55 AM To: Pianotech Subject: RE: Bergmann BG Sostenuto/Action Stuck Rick: Contact Pam Woods at AND Corp. for a new wing bolt. Call 866 798-6979. Tom is correct, there is a capstan on the hammer flange rail. Also, sometimes there is a small block of wood, the size of a dip block, which is wedged between the action frame and the wall of the action cavity. It's on the left side, easy to miss if you're not looking for it. Another thing- often the action won't shift properly because there are screws in the dag which often impress themselves in the soft keyframe wood. You can screw them in (clockwise) because the cheek block will hold the keyframe, and it will free up the action to slide easily. While you're at it, you might spray some lube on the underside of the action frame and the keyglide supports in the keybed. I use McLube mold release. Makes the frame move freely. Good luck! Paul McCloud San Diego ----- Original Message ----- From: Rick Bazemore <mailto:tunericks@yahoo.com> To: Pianotech <mailto:pianotech@ptg.org> Sent: 08/25/2005 4:54:30 AM Subject: Bergmann BG Sostenuto/Action Stuck List, I tuned a Bergmann/YC BG yesterday with a sostenuto pedal that would not slide the action. Tried to pull the action to see what was going on and it would not come out using appropriate force. Seems to me that it might be as simple as some kind of "locking device" used for shipment that was not removed in dealer prep - but since I am an independent RPT and a "newby" full-time tuner I have no experience with this particular issue. Also, on the same piano, one wing bolt was missing where the pedal lyre attaches to the bottom of the keybed. Help? Rick Bazemore East Atlanta _____ Start your <http://us.rd.yahoo.com/evt=34442/*http:/www.yahoo.com/r/hs> day with Yahoo! - make it your home page ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/69/17/b5/e7/attachment.htm ---------------------- multipart/alternative attachment--
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