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RE: Be carefull of Vitos

Author: Gordon (NZ)
Date: 2001-04-24 14:01

Joseph is quite right, and I think the warniing should include new instruments.

I have repaired dozens of clarinets broken in half at the centre tenon, and sometimes the socket. Almost every one has been Vito, Artley, Armstrong (not strong!), and Accord. I disagree with Dee. Only one was Yamaha, yet I see far mor Yamahas than any other make. The most common cause is probably sitting on them after they have been put on a bed or couch.

A plastic is instrument is made far weaker by its 'stress raisers', which at the centre tenon is at sudden increase in diameter (end of the cork and end of the tenon). The larger the radius that is designed into these locations the stronger - dramatically so. And the different plastics have different degrees of brittleness.

Also, the molecular structure of some plastics disintegrates in certain solvents. Ever used used a toothbrush with petrol (or was that kerosene, 30 years ago) to clean car parts? It shatters into dozens of pieces. I wonder if it is possible that some cork greases contribute to this phenomenon.

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Be carefull of Vitos new

joseph o'kelly

2001-04-23 23:21