| The FVTX big-wheel cooling plate is mounted on 2 points only,
and these are near the outside perimeter. The cooling plate is typically not
perfectly flat, and can be out of position near the inner radius by several
mm, in a place where the FVTX cables come around the corner. We would like
to constrain the z-position of the cooling plate in order to minimize
strain on the FVTX extension cables not only during assembly, but also during
transportation and integration.
This is the region we're interested in, where the cage and the FVTX cooling plate (almost) meet. Note the four VTX big wheels do not come close, and the VTX cables (are supposed to) curve towards their electronics board here. Also, the VTX cables do not approach the midplane in any case. So we have some room here. |
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| Since the big wheel has a cutout, it is possible to make a little block that captures the cooling plate and constrains it in the z-direction, leaving room for some sideways movement. The tapered edge can displace any gap-pad material that may be between the ROC and the cooling plate. We would need to epoxy this block to the side of the cage as shown. |
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| This is the hook, shown holding the cooling disk in place. It is screwed into a hole that has no other function (we tapped 6-32 thread in this hole). | 
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| This is the hook, shown from the other side.
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Hubert Van Hecke Last modified: Thu Oct 27 00:45:46 EDT 2011