Author Topic: Fine sanding of 1976 Mark1 key pedestals to improve the action  (Read 117 times)

Offline lupo

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Fine sanding of 1976 Mark1 key pedestals to improve the action
« on: January 06, 2021, 05:25:16 AM »
Hi guys,
Yesterday I tried to improve the action of my 1976 Rhodes Mark1 fine sanding the key pedestals with fine grit sandpaper (k800). That seems to me a clean and lasting way to reduce friction between hammers felts and the bare wooden pedestals. After the treatment I got a smoother and lighter action and so far I am satisfied with it (but still not 100% happy since the keys are still a bit too heavy).
Is there any technical reason why the key pedestals have not been fine sanded from the factory? Could this modification cause problems to the piano in the future?
Many thanks!
1976 Rhodes Mark1
1978 Crumar T1
70’s Crumar Trilogy
2008 Kurzweil PC1
2018 Korg Taktile Triton 49
2007 Gibson J45
2002 Martin D1
60’s Harmony H165
60’s Framus Sport 56/1
1978 Eko Ranger VI
60’s Welson Vedette bass
2007 Fender Ash Telecaster
2007 Fender Blues Deville 4x10 alnico
70’s Soundcity PA 120
1963 Geloso G227A
2010 Schertler Jam 100

Offline The Real MC

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Re: Fine sanding of 1976 Mark1 key pedestals to improve the action
« Reply #1 on: January 09, 2021, 12:45:45 AM »
The reason was economics not technical.  A sanding procedure would had added to the production expense, and we're talking about a company whose bean counters were searching everywhere to cut production costs.  Fender was changing vendors all the time which frustrated the designers because the new vendor could not make the components with the same quality as the previous one.  It was not a good situation for quality product.

Offline Tim Hodges

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Re: Fine sanding of 1976 Mark1 key pedestals to improve the action
« Reply #2 on: January 09, 2021, 11:55:52 AM »
I’d be reluctant to sanding the pedestals. If they aren’t flat it could have a negative side effect on the pins of the hammers and on the way the hammer rolls on the pedestal.

As you have a 1976 I would suggest instead removing the felt from the cams and instead installing it on the pedestal as the friction between felt and the Teflon infused hammer will be much less than compared to felt rubbing against wood.
Bristol Electric Piano
UK

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