|Cleland Instruments Ltd.|
Toronto, Ontario, Canada
Carbon Fibre Drums
Serving Pipeand Parade Bands Worldwide
Building The Lightest & Strongest Drums Ever Made!
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The Bearing Edge
The new bearing edge shape has been created to allow the head material to flow more easily over the transition edge. The termination point of the arch is accurately molded to give the head membrane the cleanest possible suspension edge.
This technology yields direct benefit. The head comes up to pitch more quickly. The stress on the membrane material is reduced during the tensioning process. Supporting the head in this fashion gives the cleanest possible break for each sound wave oscillation. This means not only easier and more accurate pitch attainment, but a crisper, cleaner sound.
The Snare Mechanisms Click picture for a larger image ===>
The upper snare:
The mission of the internal top snare mechanism is to accurately place the snare strands in an optimum position of proximity with respect to the head. In order to place the snares accurately they first must be tensioned accurately. We have designed lightweight, precision snare supports. These snare supports slide on special bearing material over the mechanism support tube. This robust design offers very accurate tensioning of the snare strands. The snare strands are then brought in contact with the head by a bridge that moves the snare strands only toward the head. In this way, the musician can select as much or as little snare contact as desired. The additional benefit is that the bridge ensures contact of all the strands, virtually eliminating the chance of an undesired snare strand rattle.
The lower snare: Click picture for a larger image ===>
The mission of the lower snare mechanism is to accurately place the snare strands in an optimum position of contact with the lower head. The lower snare mechanism performs virtually the same function as the top snare mechanism. Traditionally the lower snare and mechanism have been located on the outside of the drum.
There has historically been inherent issues with bottom snares that is tied to the installation location on the outside of the drum. In order to achieve the contact needed for the function of placing the snare strands against the head, it has been traditionally necessary to carve a "snare bed" into the lower bearing edge or the drum shell. In our opinion, the interruption to the bearing edge has an effect on the support of the head membrane and therefore on the sound. We also feel that more snare sound tends to come from less tension on the snare strands.
We have elected to move the lower snare inside the shell and use the same precision mechanism that we use for the top snare. The benefit is maintaining the continuous bearing edge to support the head membrane, to maximize sound clarity. The other benefit is that the snare strands do not have to fight gravity to stay in contact with the head. The snares therefore can be adjusted to any desired tension, and as again placed with as much contact with the head as the musician desires.
Installed January 1, 2009, Last Updated January 4, 2019 - This site is hosted and maintained by Don Robertson