Sustain Pedal exact location

[selvan777]

I'm building a stand for my son's 88 key Casio PX-100, which includes only a sustain pedal, and want to mimic an actual 88 key Grand as best I can.

I have the top of the white keys at 28" off the floor and the pedal is designed to rest on the floor so the 1 1/4" height isn't an issue.

But for the sustain pedal:

1. For centering: I understand that on an actual Grand the sustain pedal is aligned to a specific key but where is that key exactly in relation to the center of all it's 88 keys? Meaning to say how far to the right of the key's center (between keys 44 & 45) is it? My 88 keys are exactly 48" from end-to-end, is it the same on a Grand?

2. For depth: what is the distance from the outer tip of the white keys to the same tip of the pedal?

Thanks a bunch

[richard black]

As near as I can judge, the middle of the sustain pedal is in line with G/Aflat above middle C, and the front of the pedal is 22cm behind a vertical line dropped from the front of the keyboard. That's on my 1889 Bechstein Model V, anyway. It varies a little between instruments but I've never given any thought to exactly how much.

[selvan777]

Thank you!

I had to do some quick learning of the keys to see what you meant by 'in line with G/Aflat above middle C'. I don't get the G/A flat but correct me if I'm wrong about middle C below.

So shall I place the middle of the sustain pedal in line with the middle of key 40 (middle C)?

How wide are your 88 keys from top to bottom?  I'm just curious as to how close a match this Casio is to the real thing.

[keys60]

Count from the first G to the 4th G. That's called G4. Its pretty much in line with the line between F4 and G4 and I guess that could vary ever so slightly with different pianos. The tip of the pedal is roughly 8 inches back from the tip of the keys.

[selvan777]

I'm real sorry for my ignorance, it's my son that's wanting to learn to play, I'm just picking up what I can.

I think I get it now, is that line between F4 & G4 pretty much the 1st black key of the group of 3 keys that belong to the 4th group 5 keys (2 & 3 black) and/or simply the 19th black key from left( top) to right (bottom)?

Thank you so much for your patients.

[silverwoodpianos]

Here is a numbered diagram of the piano keyboard as used by piano technicians…..

https://www.purplehell.com/riddletools/piano.htm

[selvan777]

Oddly, I only see the following text in place of the diagram in that link: Piano Keyboard with Numbered Keys

Here's one which I've been basing all my messages on where it depicts C40-B51 as the 4th octave. In it, isn't F#46 the black key inline with the line keys60 mentioned between F4 and G4?
 

[silverwoodpianos]

very good...you got it. key # 46 is F sharp. Best of luck with the project.

[selvan777]

Thank you so much, folks.