Hey, if you had two extensions, sharpened at each end, this could help
prevent crowding by your neighbours at the race track!
Tom
> Date: Tue, 01 Jun 1999 16:59:51 -0700
> From: Mike Butler <abutler@xxxxxxxxx>
> Subject: [OM] OM-1 shake?
>
> Hi, All
> As a mechanical engineer, vibration problems are annoying but also a
> challenge. I have been pondering possible "simple, elegant" solutions and
> the first thing that came to mind is the small weight on a long rod to
> significantly increase the moment of inertia. The inertia can be
> increased by adding weight to the system or putting a smaller amount of
> weight rigidly attached, away from the system. This is used by most
> competitive archers to minimize the the disturbance in aim while loosing
> the arrow. Also by the guy/girl walking a tightrope. The setup used in
> archery tends to be a long (about a meter) rod (usually Carbon but
> sometimes Aluminum) with a small weight (less than .25 kg) at the end of
> the rod. The rod or in some cases rod's are mounted perpendicular to the
> bow. My thought is that a similar although much smaller arrangement could
> be applied here. The amount of jiggle imparted by the mirror/aperture
> compared to releasing a bow string is many magnitudes smaller. The rod
> could be short (.5m?) and the weight (.1 kg?). Only by "fully"
> understanding the mechanism of motion could one predict the "best"
> position for the rod/weight combo but many have already devised the
> necessary test setups to derive this empirically. We may find that the
> length of the rod or the size of the weight might vary from lens to lens
> and due to differences in mass and length. All that is needed is to
> increase the inertia to reduce the amplitude. I have been thinking about
> getting a mono pod for the race track, a setup like this would definitely
> help there. I know it's easy to just think about solutions when somebody
> else is going to have to do the work, but maybe "somebody" will have the
> time and energy to try this out.
>
> Mike Butler
> Chief Mechanic / Engineer
> Team FCAR
------------------
From: Tom Trottier, President, ACT Productions Inc.
infoanim@xxxxxx http://www.act.ca
+1 613 594-4829 fax +1 613 594-8944
199 Holmwood Ave, Ottawa, Ontario, Canada K1S 2P3
"Make it as simple as possible, but no simpler" - Einstein
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