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Hangar Flying / Egine mount Failure......VariEze Lyc O-235
« on: July 15, 2006, 09:37:20 PM »
Check the inside of the tube for corrosion if any is found then replace the
mount do not repair as the other tubes are about to fail also. the small hole is there for two reasons. one is to allow the expanded air out during welding and then a small amount of linseed oil is injected into the tube to prevent corrosion and then the hole is welded closed. I do not know why ken brock did not do this standard FAA aproved proceedure to his mounts because in time corrosion will destroy the mount from the inside. the crack at this hole is common with Brock mounts and has nothing to do with weld penetration. the corrosion starts at the hole and weakens the metal and a crack starts at the weakest point.
mount do not repair as the other tubes are about to fail also. the small hole is there for two reasons. one is to allow the expanded air out during welding and then a small amount of linseed oil is injected into the tube to prevent corrosion and then the hole is welded closed. I do not know why ken brock did not do this standard FAA aproved proceedure to his mounts because in time corrosion will destroy the mount from the inside. the crack at this hole is common with Brock mounts and has nothing to do with weld penetration. the corrosion starts at the hole and weakens the metal and a crack starts at the weakest point.