I was playing around with an allegedly functional 335i water pump trying make it sparkling new.
Soon it evolved in a serious and meticulous process of stripping the unit to bare metal.
I was curious why those damn hand grenades fail.
Note: You can ruin it, as I did. When opening the cap, you need to pull very hard as the magnet will have it`s fight.
One thing I noticed after opening it up. It is not 100% watertight. There were salt like deposits all-over.
As a protection for this, all the electronics are covered with a transparent insulator, as a soft glue part dried.
At first I believed that the deposits were the cause of failure, but then I thought about that water insulator, which also acted as a heat insulator, trapping heat inside.
This problem will run forever as there is inadequate cooling to the electronics. Making the aluminium shell look like an air-cooled cylinder might work, but I doubt.
The PCB is on the front of the pump, where hot water circulates, and builds heat inside. A better approach would be to position the electronics in the back and provide appropriate cooling.
Electronics are made by Continental, or maybe the whole assembly, as the middle plate had their logo and part numbers.
Pictures will follow in the next day as this operation took some time.
P.S It would be lovely to have a lesser version of the pump to establish the differences.
PS2. There was a web page with a guy transforming this water pump into an aircraft propeller, but I am unable to find it at the moment.
Soon it evolved in a serious and meticulous process of stripping the unit to bare metal.
I was curious why those damn hand grenades fail.
Note: You can ruin it, as I did. When opening the cap, you need to pull very hard as the magnet will have it`s fight.
One thing I noticed after opening it up. It is not 100% watertight. There were salt like deposits all-over.
As a protection for this, all the electronics are covered with a transparent insulator, as a soft glue part dried.
At first I believed that the deposits were the cause of failure, but then I thought about that water insulator, which also acted as a heat insulator, trapping heat inside.
This problem will run forever as there is inadequate cooling to the electronics. Making the aluminium shell look like an air-cooled cylinder might work, but I doubt.
The PCB is on the front of the pump, where hot water circulates, and builds heat inside. A better approach would be to position the electronics in the back and provide appropriate cooling.
Electronics are made by Continental, or maybe the whole assembly, as the middle plate had their logo and part numbers.
Pictures will follow in the next day as this operation took some time.
P.S It would be lovely to have a lesser version of the pump to establish the differences.
PS2. There was a web page with a guy transforming this water pump into an aircraft propeller, but I am unable to find it at the moment.