Dean, that was a considerable degree of technical expertise, and work, invested in a Wurlitzer console! I hope it was financially worthwhile. If it was, why would the owner spend the money on the Wurlitzer console instead of a new piano?! Best regards, David. www.davidboyce.co.uk > > Subject was 30 year old Wurly console. Complaint was intermittent > sluggish keys. > > This was a multiple problem child. The presenting problem was jacks > not resetting. It had the nasty felt for the knuckles and backchecks > which contributed to excess friction on the jack. Then downweight was > in the low 40 gr range and upweight was less than 20. I find that that > kind of low upweight causes problems. It just isn't enough to get > things reset. > > I changed out knuckles and backchecks to Ecsaine to improve friction. > Then I added about a 10 gram weight into the back of the key and about > a 4 gram fishing line weight to the bridle strap wire. I also reduced > hammer spring tension slightly and damper spring tension until I was > measuring around 25g at damper head. Reducing these spring tensions > helped keep downweight from going up too much by adding the key/wippen > weights. The results were down weights around 50g and upweights in the > mid to upper 20g. >> >> I added a drop of thick CA after crimping the weight just for a >> little insurance. >> >> The improvement was huge. A very responsive action. This is the first >> one that I've done adding the keyweights and wippen weights. > -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://www.moypiano.com/ptg/pianotech.php/attachments/20120225/bf416364/attachment.htm>
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