Welcome to the Piano World Piano Forums
Over 2.5 million posts about pianos, digital pianos, and all types of keyboard instruments
Join the World's Largest Community of Piano Lovers (it's free)
It's Fun to Play the Piano ... Please Pass It On!

Gifts and supplies for the musician

Schumann's 4th Finger
Schumann's 4th Finger Enigma Resolved
Piano Life Saver - Dampp Chaser
Dampp Chaser Piano Life Saver
Modern Piano Moving
Modern Piano Moving
Piano Buyer Guide
Piano Buyer Spring 2017
Lindeblad Piano
Lindeblad Piano Restorations and sales
Sanderson Accu-Tuner
Who's Online
107 registered (Anita Potter, anotherscott, accordeur, AZ_Astro, alexcawley, 26 invisible), 1787 Guests and 7 Spiders online.
Key: Admin, Global Mod, Mod
Estonia Pianos
Estonia Pianos
Quick Links to Useful Piano & Music Resources
Our Classified Ads
Find Piano Professionals-

*Piano Dealers - Piano Stores
*Piano Tuners
*Piano Teachers
*Piano Movers
*Piano Restorations
*Piano Manufacturers

Quick Links:
*Advertise On Piano World
*Free Piano Newsletter
*Online Piano Recitals
*Piano Recitals Index
*Piano & Music Accessories
*Live Piano Venues
*Music School Listings
* Buying a Piano
*Buying A Acoustic Piano
*Buying a Digital Piano
*Pianos for Sale
*Sell Your Piano
*How Old is My Piano?
*Piano Books
*Piano Art, Pictures, & Posters
*Directory/Site Map
*Virtual Piano
*Music Word Search
*Piano Screen Saver
*Piano Videos
*Virtual Piano Chords
Topic Options
#650347 - 06/23/02 10:48 PM Rusty piano strings
David Krappon Offline
Junior Member

Registered: 06/23/02
Posts: 6
Howdy folks,

I restore vintage electronic and acoustic musical instruments, however, I'm relatively new to acoustic pianos. Anyhow, I recently bought a Yamaha CP70 stage grand piano for $120(Australian).
For those unfamilliar with this model, its a 73 note, small scale grand piano with transducer pickups on the strings for use in FOH PA systems and Rock concerts. I had been after one of these rarities for over 10 years.

It's a basket case that a guy had sitting in his garage in peices for about 8 years, in fact the only thing that is completely assembled is the iron harp assy complete with the strings and electronics. This is the most complex project I have ever undertaken.

What I would like to know from everyones far superior knowledge is regarding rusty strings.

The iron harp frame and strings all have suface rust, and I was wondering, if I should get rid of all the existing strings clean the frame repaint it and re-stringing all of the 73 notes?

Is sanding back, re-painting the iron harp frame and re-stringing a crazy suggestion?
Or is there a far simpler solution?



PS: I know this place is just about pianos, but I have successfully rebuilt a number of instruments including a 1973 Hammond X5 organ and a 1965 Hohner electric piano (similar to a Fender Rhodes). Please don't go nuts at me I'm only new here.

(ad 800)
PTG 2017 Convention
PTG Convention 2017 St Louis
#650348 - 06/24/02 04:04 PM Re: Rusty piano strings
Brian Lawson, RPT Offline
500 Post Club Member

Registered: 07/04/01
Posts: 647
Loc: South Africa
Hi, you must take sizes of all the strings, there will be progressivly different thicknesses which need to be measured, for the bass strings they will need to be send as a set for duplicating unless Yamaha has a spare set laying in a wharehouse somewhere.

As it is build like a piano, to restring it must be approached as you would restring a piano - note the neatness of the coils, e.g. you dont put strings on and tie them off as most guitarists do!
Brian Lawson, RPT
South Africa


#650349 - 06/26/02 08:42 AM Re: Rusty piano strings
Christopher Stubbs Offline
Full Member

Registered: 12/20/01
Posts: 27
Loc: Wales, UK
Yamaha CP70 has bichords throughout (apart from the bass) if the strings are coated with a thin layer of rust I would suggest cleaning them with scotchbrite as tone will not differ a great deal by restringing because of the pick ups and the hammers are leather (unlike the wool found on acoustic). Try this first and see if your happy with the sound, as stringing the bass is castly a especially with such a short string on the CP70 the difference would be minimal, the amplifier could balance out the discrepancies anyway. Try it.

#650350 - 06/30/02 07:50 PM Re: Rusty piano strings
Full Member

Registered: 05/17/02
Posts: 148
What you do in this cases is: take an eraser made of rubber (for pencil)and clean each string from end to end then clean all of them with a rubber cloth those use for car detailing then unwind those strings that have wire wound copper (BASS AND TENOR RANGE APPROX) take them off an make a tight loop with the string, you can use may be a tube to loop the strings, that will help to take off the rust and it won't damage the string when you put them back twist them a little bit. good luck!

Piano & Music Accessories
piano accessories music gifts tuning and moving equipment
#650351 - 07/02/02 08:15 PM Re: Rusty piano strings
David Krappon Offline
Junior Member

Registered: 06/23/02
Posts: 6
Thanks very much guys, these are all really great sugestions. I have since read up on piano tuning and I know I'm not ready to undertake replacing all of the strings, besides it's just too bloody expensive. For the time being cleaning the strings is good enough for me.

Thank you all, \:\)

David Krappon


Moderator:  Piano World 
Pearl River
Pearl River Pianos
What's Hot!!
New Forums Location & New Piano World Site
Why Do You Play The Piano?
Posting Pictures on the Forums
on Piano World

Piano Classified Ads
Pierce Piano Atlas

Sweetwater Hiring Keyboard Player!
Sweetwater Hiring Keyboard Player
Grotrian Concert
for Pianoteq out now
A. Geyer Pianos
A. Geyer Pianos
Piano Acc. & Gift Items in
Piano World's Online Store
In PianoSupplies.com ,(a division of Piano World) our online store for piano and music gifts and accessories, party goods, tuning equipment, piano moving equipment, benches, lamps Caster Cups and more.

Caster Cups for Pianos

Free Shipping on Jansen Artist Piano Benches
New Topics - Multiple Forums
Does dust collection ruin a piano's sound?
by johnjones795
10 minutes 28 seconds ago
M-Audio Oxygen 88 (Or recommendations for other controller)
by Zilthy
27 minutes 42 seconds ago
Ritmuller or Kawai? Teacher says kids need a better piano.
by UnlocktheDream
42 minutes 36 seconds ago
Piano Teacher in New Orleans and surrounding
by MMH
Today at 06:16 PM
help getting started ?
by Adam_Nfl
Today at 06:03 PM
Sheet Music Plus
Sheet Music Plus Featured Sale
Forum Stats
87,521 Registered Members
44 Forums
179,233 Topics
2,619,531 Posts

Most users ever online: 15,252 @ 03/21/10 11:39 PM

Visit our online store for gifts for music lovers

Help keep the forums up and running with a donation, any amount is appreciated!
Or by becoming a Subscribing member! Thank-you.
Donate   Subscribe
Our Piano Related Classified Ads
Dealers | Tuners | Lessons | Movers | Restorations | Pianos For Sale | Sell Your Piano |

Advertise on Piano World
| Subscribe | Piano World | PianoSupplies.com | Advertise on Piano World |
| |Contact | Privacy | Legal | About Us | Site Map | Free Newsletter |

copyright 1997 - 2017 Piano World ® all rights reserved
No part of this site may be reproduced without prior written permission