So I am trying to install some systems right now and have some questions and seeking inputs. Some key information about my plans are that I intend to almost always use non-ethanol mogas but I also want the capability to run fuel that contains ethanol. I think I've settled on dual electronic ignition (SDS CPI 2 is plan for now) and mechanical injection. I intend to install a (Newton) duplex fuel valve with return lines. I'm building all my lines out of PTFE AN6 including returns.
So what filter or filters should I use for my planned mechanical injection and where to place them? The plans are calling for a single AFP filter (74 micron) in the tunnel. This seems easy by just following plans but for those who have flying planes is it a nasty smelly mess each year opening and cleaning these up? I've got the access panels already installed so it isn't going to be terrible getting to it here.
But then I'm seeing where some are installing wing root filters (dual) which gives redundancy and supposedly less mess cleaning the filters. But here I am seeing a lot of tight bends on the AN6 and that gives me a little pause with the fact that I will not be running 100LL very often. Am I right to worry about this?
What about under the seat / near the gear legs where the lines go through the brackets holding the lines? Is this a good location? Is it hard to get into here each year for cleaning?
In the wing root and under seat example, I think I'm seeing more along the lines of 30 or 40 micron filters being used. What level of micron is required or preferred and why? Is mechanical injection happy with 74 and less change of clog compared to a 30/40?
So what filter or filters should I use for my planned mechanical injection and where to place them? The plans are calling for a single AFP filter (74 micron) in the tunnel. This seems easy by just following plans but for those who have flying planes is it a nasty smelly mess each year opening and cleaning these up? I've got the access panels already installed so it isn't going to be terrible getting to it here.
But then I'm seeing where some are installing wing root filters (dual) which gives redundancy and supposedly less mess cleaning the filters. But here I am seeing a lot of tight bends on the AN6 and that gives me a little pause with the fact that I will not be running 100LL very often. Am I right to worry about this?
What about under the seat / near the gear legs where the lines go through the brackets holding the lines? Is this a good location? Is it hard to get into here each year for cleaning?
In the wing root and under seat example, I think I'm seeing more along the lines of 30 or 40 micron filters being used. What level of micron is required or preferred and why? Is mechanical injection happy with 74 and less change of clog compared to a 30/40?
