Piano Tech Talk - Repetition Lever Spring Adjustment

Piano Tech Talk - Repetition Lever Spring Adjustment

April 12, 2021

Tech Talk - Repetition Lever Spring Adjustment

Tech Talk - Repetition Lever Spring Adjustment


“Repetition lever spring adjustment” is many official words for a simple adjustment. As discussed in the two previous posts on let-off and fall, we were able to see and measure (at least with our eyes) the hammer position relative to the string. To do this, the hammer is raised very slowly and in a controlled manner.

When determining the correct spring tension in our next adjustment, the hammer must be played in a mezzo-forte manner to allow the hammer to be captured in its “checked” position. In other words, just play the note. The hammer should come to rest around 5/8” from the string. From this resting position, again in a very controlled manner, lift the key ever so slightly. You should notice the hammer make its way toward the string on its own. This movement may be terribly slow, or quick and abrupt. The speed at which it is set is determined by a variety of other adjustments and considerations. Many speeds may work, but only one will be optimal.

Having the backcheck leather in good condition as well as the hammer tail sufficiently textured will also come into the equation of what the correct tension on the spring may be. In this case, stronger is not necessarily better, and too much can be bad. In the next Tech Talk, we will be looking at the last of the primary four adjustments to the grand piano action regulation, back check.




Leave a comment

Comments will be approved before showing up.


Also in Southwest Pianos Blog

PETROF HISTORY: PIANOS FROM THE HEART OF EUROPE
PETROF HISTORY: PIANOS FROM THE HEART OF EUROPE

April 21, 2022

Take a brief scroll through the history and journey of the six generations of the Petrof family. We are the proud merchant for Petrof in the area and look forward to showing you their magnificent pianos. Come into our store to play and enjoy this wonderful brand.

Continue Reading

Gift Your Child A Skill For Life
Gift Your Child A Skill For Life

April 17, 2022

Children benefit a lot from piano lessons. Piano lessons help mold and shape their brain to be more musical and in return help them focus better. Your child will have to hold their attention on every single note and maintain the required rhythm at the same time, its amazing! 

Continue Reading

WORLD PIANO DAY 2022
WORLD PIANO DAY 2022

March 29, 2022

“Why does the world need a Piano Day? For many reasons. But mostly, because it doesn’t hurt to celebrate the piano and everything around it: performers, composers, piano builders, tuners, movers and most important, the listener.”

– Nils Frahm

Continue Reading