In a message dated 26/08/03 11:35:54 AM, <mfarrel2@tampabay.rr.com> writes: << Why is a Dampp-Chaser rod "not compatible ...... period" in a grand action cavity? >> (T.F.) For two reasons: 1. Heat rises and the first thing it will run into in the action cavity is the pinblock. Heat doing what it does, with or with a humidistat, will over time cause premature failure of the pinblock.....this ain't rocket science. :-) 2. The DC installed in any area of the action cavity draws outside air into the cavity through convection as we would expect and verrrrry little of this 'warmed' air will actually get to the jacks/balanciers...this makes any benefit from a cavity installed DC problematical at best. Because of the openess of the cavity/block/platewebbing/capo area there is never any sustained drying of anything...well except for the block....... No amount of "insulation" will stop the pinblock from drying out over time. The answer to this 'sluggishness' problem is to solve the real problem(s) and not treat the symptoms.........period. My Opinion. Jim Bryant (FL)
This PTG archive page provided courtesy of Moy Piano Service, LLC