Hi Fran, I guess the elbows get more of an "impact" on them than the flanges. At 04:20 PM 10/23/02 -0400, you wrote: >That all makes perfectly good sense. However, many of the ones I have run across (should have run over?) have never had a damp chaser installed. >Perhaps they would have fallen apart sooner if they had. Still the flanges, etc. lasted far better than the elbows. Maybe just wear & tear from the movement? >Fran Helms >Topeka > >Don <pianotuna@accesscomm.ca> wrote: > >>Hi Joe, >> >>It's quite simple really. The speed of any chemical reaction doubles with >>every 10 degree C. increase in temperature. Most plastics are made with >>polymerization process to make long chain molecules. The long chains >>eventually break down and you end up with very brittle parts. Heat from any >>source will speed the process of depolymerization. Regards, Don Rose, B.Mus., A.M.U.S., A.MUS., R.M.T., R.P.T. Tuner for the Center of the Arts mailto:pianotuna@accesscomm.ca http://us.geocities.com/drpt1948/ 3004 Grant Rd. REGINA, SK S4S 5G7 306-352-3620 or 1-888-29t-uner
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