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veery715 · 03-28-2007, 11:48 PM

Springs aren't springs....... Comparing garage door springs, refridgerator springs, etc, with cornet valve springs, doesn't help. Think of the DUTY CYCLE. This term refers to how often the spring is stretched or compressed. And then think of tension at rest. The garage door spring has a few times a day duty cycle, but it is under very high tension when at rest. Failure is likely due to the high tension. But usually they last 10 to 15 years before giving out. Springs in your fridge compressor operate hundreds or thousands of times a day, but are not under much tension. However the high duty cycle combined with heat from the compressor may bring about premature failure and yes, cost is probably a factor.
The springs in the cornet are probably as good in a beginner horn as in a pro horn and are unlikely to be much of a factor in the cost of building a horn, unless it is a real cheapo. Lots of use, or none, they won't change much over time. The corrosive quality of saliva and condensation will eventually affect them if not cleaned often.
I agree that cleaning is the answer.

03-28-2007, 11:48 PM	#9 (permalink)
veery715 Mezzo Piano User Join Date: Mar 2007 Location: Ithaca NY Posts: 628	Re: Hard Valves & Springs Springs aren't springs....... Comparing garage door springs, refridgerator springs, etc, with cornet valve springs, doesn't help. Think of the DUTY CYCLE. This term refers to how often the spring is stretched or compressed. And then think of tension at rest. The garage door spring has a few times a day duty cycle, but it is under very high tension when at rest. Failure is likely due to the high tension. But usually they last 10 to 15 years before giving out. Springs in your fridge compressor operate hundreds or thousands of times a day, but are not under much tension. However the high duty cycle combined with heat from the compressor may bring about premature failure and yes, cost is probably a factor. The springs in the cornet are probably as good in a beginner horn as in a pro horn and are unlikely to be much of a factor in the cost of building a horn, unless it is a real cheapo. Lots of use, or none, they won't change much over time. The corrosive quality of saliva and condensation will eventually affect them if not cleaned often. I agree that cleaning is the answer. __________________ Music = Love Trumpets: Lawler Bb / Olds Recording / Schilke B2 Selmer Rad 2 / Yamaha 8310Z Holton MF ST 550S / Stage 1 California C Easyplay mini-trumpet (????) / Chinese Special / Benetone 1934 Cleveland (HN White) 603 Silver Plate w/ Gold Bell Kanstul ZKT 1525 Flugelhorn Cornets: Conn 36A / King Super 20 Master Olds Ambassador / Conn 18A King HN White 1904 Bb+A / Ohio Regent Soloist Conn 16E Eb/F Mellophone Piano, keyboards, vibes, congas, guitars, yada yada