Quote:
Originally Posted by DanH
Listen to Ernst.
Sandwiching fiberfrax doesn't make much difference when hanging bolted sub-assemblies. The major exception would be the motor mount.
However, riveted joints should always be metal-to-metal. Besides, it's best if the rivets are under the protective shielding...they're aluminum.
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Thanks to you both! I'll rivet the oil cooler directly on to the firewall and shield the rivets with the fiberfrax + stainless.
Dan, on your plane did you end up shielding the rectangle inside of the oil cooler mount as well? Since I'm doing this on new install I imagine the best route here is to
- cut the fiberfrax to the entire shape of the firewall, but cut flaps in the places where the oil cooler needs to mount
- attach the frax and stainless
- fold up the flaps to expose metal for the oil cooler, rivet, then attach the folded-up-flaps back down over the newly riveted joints.
This would provide the most coverage. Am I on the right track?