I just completed the first flight with my RV-12 / Rotax 912 and it went very well. I removed the cowl to inspect for any possible leaks etc.. post flight and for the most part everything looked fine.
However, I did notice a few drops (maybe 1/4 teaspoon at most) of dark black oil on the lower front edge of Cyl#1. It did not come from the value covers (the perimeter of the #1 cover was clean) It did appear to originate from the base of the stud that holds the bottom nut for the exhaust flange. There was very little, not enough to drip even, but I hadn't noticed any oil or dirt in this location after previous ground runs of the engine. Might have been there before and I missed it as I needed a dental mirror to see in behind where most of it was. I'll closely inspect after next flight to see if this is real or not.
Question - Anyone ever seen an oil leak on a 912 at this location? I didn't think these engines leaked very much at all.
However, I did notice a few drops (maybe 1/4 teaspoon at most) of dark black oil on the lower front edge of Cyl#1. It did not come from the value covers (the perimeter of the #1 cover was clean) It did appear to originate from the base of the stud that holds the bottom nut for the exhaust flange. There was very little, not enough to drip even, but I hadn't noticed any oil or dirt in this location after previous ground runs of the engine. Might have been there before and I missed it as I needed a dental mirror to see in behind where most of it was. I'll closely inspect after next flight to see if this is real or not.
Question - Anyone ever seen an oil leak on a 912 at this location? I didn't think these engines leaked very much at all.
