Well okay, if you're saying "staves move" and "give up", then that tells me the drum is coming apart. In that case, sure, I'd certainly expect a misshapen drum. Of course, this is much more likely with *traditional rims
, traditional assembly that doesn't pin the staves to one another for shear strength, and use of traditional, natural adhesives vs modern synthetic epoxies or PVAs. Using these techniques, I'd expect the drum staves to stay intact (no relative motion) under full head tension for 20 years. I'll try it and get back
So I'm in agreement--a drum that begins to come apart due to long periods under tension is also likely to deform.
*Because the traditional design is not all that stiff in the direction perpendicular to the head surface, they will bow upward in the region between drawbolts. This relieves the compression on the staves that are between the bolt anchors, producing higher shear stresses on all staves. I seen this deformation in photos, but not firsthand.
Edited By Bongo Boy on Mar. 14 2002 at 23:16