The Clarinet BBoard

The Clarinet BBoard The C4 standard

New Topic | Go to Top | Go to Topic | Search | Help/Rules | Smileys/Notes | Log In

Previous Message | Next Message

RE: Be carefull of Vitos

Author: Gordon (NZ)
Date: 2001-05-01 14:38

Ron: The larger the radius the less weakened is the joint, and the larger the radius undercutting the wall, the deeper it will need to go. The idea is that even a remaining scratch represents a "stress raiser"; it is effectively a groove with a very small radius.

Some plastics certainly are very durable, but design attention does need to be given to "notch sensitivity", which applies to plastics more so than metal or timber. I regard the Yamaha plastic as far more durable than many plastic instruments.

The Buffet Greenline is in a different category altogether. Although the timber dust is bonded with a polymer the composite is made considerably stronger by the addition of some carbon fibre.

Andy: I certainly wouldn't trust the epoxy mend for long.
Joint replacement can be expensive because keys seldom transfer from one joint to another without considerable time spent on adjustment of length of keys between posts, especially when keys are slightly too short between posts. Also pads will probably all need reseating and possibly changing. Yamaha is an exception because there is such high consistency and quality control in all parts. The irony is that Yamahas very seldom break anyway.

You can see why I do the pinning technique rather than the replacement. It can easily be 1/3 the price and the result is stronger than the original.

An alternative fix is to "graft" a replacement tenon to the instrument. I have found this more time consuming and quite likely less reliable than the pinning I do.

Reply To Message | Avail. Forums | Flat View

Newer Topic | Older Topic

Topics

Author

Date

Be carefull of Vitos new

joseph o'kelly

2001-04-23 23:21