Re: [ATM] Spider Design and Vibration

["Mel Bartels" <mbartels@bbastrodesigns.com>]

>>>
this, >0<, where > and < are the 2 sets of vanes, and 0 is the axis of the 
secondary holder.  Is there a similar advantage (less vibration) to 
splitting a 3 radial vane spider, like this >0-?  Also, has anyone done this 
one 0>-? it would seem to be easy to make, although the vanes
<<<

Yes, I've experimented with this type of 3 vane spider, both solid and wire, 
and neither worked very well.  The bottom single vane does not dampen the 
rotational energy that the upper 2 vanes can impart to the secondary.  As 
the secondary is twisted, the upper 2 vanes merely find a new intersection 
that is very close to some radius position of the bottom vane.

Mel Bartels

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