Warped Brackets on Young Chang / Weber Pianos Grands

By Eric Michael Roberts – Web Master MPT

I just replaced the action brackets on a weber grand from 1990’s.  As mentioned before in MPT convention it was discovered that the action brackets were swelling due to a poor alloy mixture during the manufacturing process. and you can not regulate that out of it.  By advice from MPT Pres. Jack Hamiliton, I called Young Chang and they confirmed the serial number and sent me brackets free.  If you come to a grand piano from young chang  or weber from the 90’s with out of wack weird regulation, before you regulate the heck out of the piano, check with mfg to see if the brackets are at fault.  The alloy was mixed wrong and it causes  swelling over time.  This knowledge saved me hours of work and the job paid very well.  I took video of my entire process which included relocating screws for the center brackets on the action frame (which took the longest of the steps in the process)  I will try to post some video on our blog later.

This piano was checking so bad and the jacks were not lined up at all.  In fact, it looked like someone messed up the entire regulation but the customer had no previous action work done and was the only owner.  Warping of this kind is such a freak type that many techs can’t even believe it but it is true.  This knowledge was discovered and shared at an MPT convention in past years.  When you encounter a problem and can not see the solution, you can inquire with MPT members and network to find a quick and solid answer.  This is one great reason to be affiliated with MPT, the things you learn and can accomplish are so much greater in a group of  such skilled and accomplished technicians.

Once the new brackets were installed, I had to regulate the basics and the piano plays great now.  I admit it was a bit scary to me as a young technician to undertake this project for my customer but I have the backing of the greatest techs in the country with the MPT.

Young Chang was very helpful.  Sent the brackets and the directions detailed.
Thanks to Jack Hamilton who had the knowledge right away and shared it with me so that I could accomplish this job.

5 thoughts on “Warped Brackets on Young Chang / Weber Pianos Grands

  1. Many technicians don’t realize what Eric realized here. One way to quicken the process is to replace one bracket at a time as the directions state, but leave the bracket screws a little loose so that alignment can be made to the key frame screw holes first before tightening them up. Remove the keys during this process for easier access and redrilling of the keyframe holes for the stack as necessary. Usually the end brackets will fit the original keyframe holes, but the middle ones won’t align with the front holes exactly, so you must plug and redrill, although if the new screw holes miss the original holes by more than 1/4″, you can skip the plugging. Also replacing all of the old keyframe screws with 8X1 1/2″ long screws is recommended. Drill out the original holes that you are still using a little deeper so that the new screws will not split the wood.

    • Very troubling problem. I just changed brackets on a Knabe from the 90’s. The action was so bad that the hammer tails were hitting the whippen screws. When the brackets were replaced the piano played beautifully.

  2. I am aware of this problem but it has been awhile since I have done such a job on one of these. I was contacted by a dealer that has a used Weber W112 and says the pedal brackets needed this replcement.Has anyone heard of this on a vertical? This dealer was a slavage dealer not a piano dealer. I just wanted to hear from anyone that has had exprience with this cause this piano is a least 65 miles away.

  3. I have come across and replaced action brackets in three Young Chang/Weber pianos now. In all three instances, in addition to replacing the faulty actions, Young Chang company ALSO reimbursed up to $250 for the labor required for the replacement and slight modifications made (see Vince’s reply above). The cost to the customer was zero–Young Chang warranteed the work. Good for them!

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