Quote:
Originally Posted by Botnst
Camera angle set so the frame's lower limit is just above the floats. Looking at monopod mounts bolted to a plywood "table", with the table clamped to the frame. isolate vibration from the aircraft via pads on the clamps and "table" and also between the individual monopods and the cameras.
My butt-mounted accelerometer tells me that the prop-induced vibration overwhelms valves, exhaust and noise.
All vibration is going to degrade the resolution of the camera as the effective moment of the line-of-site will amplify even the tiniest movement.
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With a two bladed prop, I'm not grasping why you wish to isolate the frequency of 2250-2450 Hz? Operating engine speed is approx. in the range of 2500 rpm.........correct? With a two bladed prop, the desired frequency would be approx. 83 Hz.
Your plan to isolate via pads on the clamps and/or table should be effective.........however, I believe you'll need to use rubber of a specific durometer to address the specific frequency that you seek. I don't think you'll need fluid filled mounts to achieve a measure of success.