Interesting thread. I am getting back into aviation after 20 years and I'm considering an RV12. Admittedly my brain is having to "warm up" to the idea of Rotax engines since I am coming from Lycs, Continentals, round engines and turbines. In general I like what I see and I really appreciate forums like this to help myself and others learn from experiences that we'd rather not have ourselves! I've flown several gliders and I don't have a glider rating. It's exciting at best.
Seagull made and interesting point in post #69 regarding the fact that the only lines in the system that don't experience return fuel circulation are the feed lines from the tree to the carbs.
Prepare to experience my ignorance, but I'm an engineer so most of my ideas don't work
! Would it be possible to install a "T" at each carburetor inlet and allow fuel to bypass and return from that point thus circulating fuel through the feed lines as well?
More of a thought experiment than anything else. I don't have any real experience messing with Rotax engines.
Kind regards to all!