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#2939113 01/27/20 06:12 AM
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pe2Dave Offline OP
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Mine is CA67 with Grand feel II ( I think). 2014 model.
Problem: The far end of the keys have felt pads, with PTFE sheet stuck to the top, against which the 'hammer' rubs.
Over time, the sheet is 'pushed' off, leaving the hammer to stick to the glue underneath.

I've found 3 youtube videos showing 'fixes' for this, clearest youtube video though not in English.

Kawai UK don't seem to want to acknowledge this is a design issue, wondering if others have seen this?
I've found thin (.5mm) sheet PTFE on ebay, unsure what 'felt' pads to use.

Anyone any suggestions, have fixed theirs?

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Kawai Novus NV10
My amateur piano recordings on YouTube
Latest Recording: "Prélude (Opus 28, No. 4)" by Frédéric Chopin
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pe2Dave Offline OP
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Thanks for that JoBert. Quite a thread.

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I've been prolonging the life of my MP8 with much attention to this problem. Now that Kawai have finally addressed this in the CA99 GF3 keyboard I'm very tempted to upgrade. Until now I could see the problem recurring in the GF2 instruments.

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pe2Dave Offline OP
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Originally Posted by Smaug
I've been prolonging the life of my MP8 with much attention to this problem. Now that Kawai have finally addressed this in the CA99 GF3 keyboard I'm very tempted to upgrade. Until now I could see the problem recurring in the GF2 instruments.


Sheesh Smaug, they get it wrong (design weakness) and we pay to get a new piano? Smells all wrong to me?
Sell me (reasonable cost) new pads and ptfe, half a day and patience we can fix it?

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pe2Dave Offline OP
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Kawai 'replacement' strips. 6 per complete keyboard.
http://www.wdgreenhill.co.uk/store/product/slip-tape-strip-1 UK supplier.

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I also replaced the foam, otherwise new PTFE alone will suffer the same fate. The problem is finding double-sided tape the correct thickness. I originally applied a single layer but after compression needed to apply two more to avoid any key clacking sounds. I recommed just doing a middle octave and waiting a few weeks to see how it settles.

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The parts: easy.
The repair work: not so easy.
The expectation: why should a piano need this fix so soon?

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pe2Dave Offline OP
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Originally Posted by Smaug
I also replaced the foam, otherwise new PTFE alone will suffer the same fate. The problem is finding double-sided tape the correct thickness. I originally applied a single layer but after compression needed to apply two more to avoid any key clacking sounds. I recommed just doing a middle octave and waiting a few weeks to see how it settles.
The product shown replaces both the foam and the PTFE.
So cut / scrape off the existing foam (felt?) and PTFE, clean up and apply the new strip.
Need to clean the hammer of any glue too.


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