The really useful course at Skycraft covered some sensible – regular- checks I could do around mags ..
Turns out this is especially good in moist environments.. so on an island of 9 miles by 5 miles surrounded by sea probably constitutes as ‘moist’ … add to that if course salt air … and you have good properties for corrosion ..
Checking the magnets on the flywheel is really simple with the cowling off and sure enough.. rotating the prop to reveal the magnets showed a fair build up of rust …
Post cleaning with paste 
Pre cleaning – light surface rust evident 
post cleaning with just paste
As Dave noted .. this could be a cause of radio noise.. and I’ve been having that creep in in last few months… probably proportionally ‘noisy’ as time passes… and surface rust builds …
Jersey Sherwood Ranger 
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