Pianotech

Greetings

It appears one can adjust the pressure on the keyframe via these cheek blocks, but how? Is there a hex screw at the end of the hole in the front that drives that pointy thing?

Be gentle with me...asking first is a new concept.  

Greetings

It appears one can adjust the pressure on the keyframe via these cheek blocks, but how? Is there a hex screw at the end of the hole in the front that drives that pointy thing?

Be gentle with me...asking first is a new concept.  

With all due respect Wim, I can guess.

What is not shown is a hole in the front of the cheek that seems to connect to that small pointy piece that is at the top of the rounded brass cutout. It  is only evident if you zoom in. 

Hopefully someone out there has direct experience/knowledge. 

Greetings

It appears one can adjust the pressure on the keyframe via these cheek blocks, but how? Is there a hex screw at the end of the hole in the front that drives that pointy thing?

Be gentle with me...asking first is a new concept.  

This looks the same as the Hamburg Steinway design that New York Steinway adopted a few years ago, section 6 p.11 of the Steinway technical reference guide from 2005 has instructions. The hex screw will put pressure on the cylinder that pushes up on the block thus tightening the block on the keyframe end pin. Do this with the two phillips screws tight. If you go to far you can back off the hex screw but will need to loosen the two screws to reset it. 

You can also add a shim between the cylinder and the block if the hex screw gets maxed out, but your photo looks like it can go further. 

ps. Hi from Northwestern! 

With all due respect Wim, I can guess.

What is not shown is a hole in the front of the cheek that seems to connect to that small pointy piece that is at the top of the rounded brass cutout. It  is only evident if you zoom in. 

Hopefully someone out there has direct experience/knowledge. 

Greetings

It appears one can adjust the pressure on the keyframe via these cheek blocks, but how? Is there a hex screw at the end of the hole in the front that drives that pointy thing?

Be gentle with me...asking first is a new concept.  

With all due respect Wim, I can guess.

What is not shown is a hole in the front of the cheek that seems to connect to that small pointy piece that is at the top of the rounded brass cutout. It  is only evident if you zoom in. 

Hopefully someone out there has direct experience/knowledge. 

Greetings

It appears one can adjust the pressure on the keyframe via these cheek blocks, but how? Is there a hex screw at the end of the hole in the front that drives that pointy thing?

Be gentle with me...asking first is a new concept.  

Greetings

It appears one can adjust the pressure on the keyframe via these cheek blocks, but how? Is there a hex screw at the end of the hole in the front that drives that pointy thing?

Be gentle with me...asking first is a new concept.  

I work for a Bechstein dealer, so I've had to learn to use this system.  Once you understand it, it's fairly simple and very easy to fine adjust.

I'm not sure the real names, but this is how I describe/understand it.

You have a steel frame screwed to the cheek block.  Two screw on the underside lock position fore and aft.

Brass position adjustment - Pushes/pulls the framer fore and aft for strike point adjustment.  Similar to old Steinways.

Brass Pressure block w/roller - This moves up and down to adjust pressure on the keyframe ends.  The roller allows low friction shifting

What looks like a capstan is really just a pin.  It gives the adjustment screw something to push against.

Adjustment screw - This is accessed from the front of the key block.  All the ones I've seen are 3mm Allen screws. The other end is machined as a wedge.  As you push the screw further into the block, the wedge will push against the capstan-like pin, pushing the entire block down.  This allows very fine control over how much pressure is on the key frame ends.

Keep in mind, this is on a new instrument, they may have been a bit different a few years ago.

Hope this helps

Greetings

It appears one can adjust the pressure on the keyframe via these cheek blocks, but how? Is there a hex screw at the end of the hole in the front that drives that pointy thing?

Be gentle with me...asking first is a new concept.