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Weak spots in the cooling channels


There is concern about the strength of the glue joint between the peek core material of the half-disk edge, and the surface carbon sheet, in the vicinity of the hose barb. If coolant leaks would occur, this would be the weakest spot.

The vicinity of the mounting tabs on the disk side is relatively unobstructed by HDIs and extension cables. Shown here is the top tab of station 3. The two holes in the top of the tab are where the mounting pins/screws go.

The way the disks meet the cage, there is no way to put a clamp over the top of the tab, since it would be in between the tab and the cage. This is the top of station 1.
In this view of the same area, the cage has been made invisible. There is not a lot of space for a clamp, which I drew in black, that wraps around the top as shown. The thickness is limited to where it touches the barb (1.22 mm), though you could make it thicker and file out a notch for the barb). The width (z) here pushes the hose out a little, (1/3 of the distance to the barb is 1.41 mm). On the sides and the front the clamping plate can be a little wider.

Another weak spot is on station 1 bottom, where there is a very thin wall. One thing that constrains a solution is that the mid-plane edge of the half-disk mates with the half-disk on the opposite side, so we cannot place a bracket or clamp across this thin wall. Using tape to wrap this section would be a compromise between preventing a leak and incurring a 100 um gap between the two halves.

The tape would have to extend under the foot (shown in white) of the first module. This is not ideal, but on the other hand the foot would help keep the tape from sliding or creeping.

On the backside, there is a bit more space for the tape.

Hubert van Hecke
Last modified: Sat Jan 15 15:23:52 EST 2011