Fuel system and filter

Hi chaps and chapesses!

I have used plastic filters like the ones suggested for more than ten years now whilst burning Auto gas with and whithout ethanol with no problems whatsoever. Thus, I am with Sean and many more who enjoy easy inspection at a glance. But I would like to make one more point. My plastic filters do not live under the cowling and are not subject to cowling type temperatures. 
Not that I know how Flight Design used plastic filters and where they fitted them but I can picture bended plastic in conjunction with above OAT temps.

Good luck!

There are different kinds of plastic. Plus there are some glass filters too. The plastic ones aren't affected by no ethanol auto fuel. Plus you may not see any bending if it's a nice straight installation vs one that is bending either coming into or exiting the filter and applying pressure. .

I agree that some, lower quality, in line, transparent, fuel filters may have issues with ethanol - this is not a good reason to dismiss all such filters.

If the filter example above is the best that you can come up with, I suggest that this fuel filter has the appearance of one that I might fit to a lawn mower but not in my wildest dreams to an aircraft.

Nor would I ever install a filter with side lodes from the hose. If a right angle is required - purchase a hose with the right angle built in HENGST H103 WK

Poor mechanical practise is just that and should be called out when ever encountered.😈

I just use reusable metal filters. Buy it once and clean it now and then and that's it.

Hello everyone and thank you for your explanations.

Here is my setup, which should allow me to use all types of fuel.

• I will use a stainless steel 316 mesh inside the fuel tanks.

• I have 8 mm cupronickel fuel lines, including for the return line.

• I’m using stainless steel 316 ball valves with PTFE seals.

• I have 8 mm stainless steel compression fittings (olive type).

• I’m using an ACS percolator made of aluminum with a stainless steel mesh.

I understand that the pre-filter is coarse and should be between 1000 and 2000 microns. I can also afford to install it easily since I’m building my aircraft, and it’s easier to do during assembly.

Thanks again to everyone for your explanations and feedback.

All the best.