I've been advised to install a filter/water drain between the fibreglass tanks and my fuel selector as the andair PTFE seals in the selector can be damaged by any residual fibreglass dust that might be left in the tank. Apparently several hours of tank flushing with the pumps before the first flight doesn't get the dust completely out and after 50 hrs of flying it's not uncommon to find dust particles when changing out filters.

    What is the general consensus on the the best "non flow restricting" filter to use on the non pressure side of the fuel system (pre fuel pumps and pre fuel selector) as well as which filter to use on the pressure side of the system, and what micron filters to use.

    For the pressure side of the system I've heard raycor filters work really well and don't block easily,

    Alex Molteno


The best tank to pump filter so far for a rotary application seems to be a 100 micron from from Aeromotive, looks good, but expensive when you need to have 3 of them

http://aeromotiveinc.com/products-page/fuel-filters/12324/100-micron-orb-10-black-fuel-filter/

I’ve attached a PDF from Aeromotive on pre pump filters that makes good reading. I am planning on a 10 Micron filter after fuel pump 1, and a 40 micron filter after fuel pump 2 so i can run pump1 and catch all debris but for any blockage problems switch over to pump 2 with a 40 micron screen which should flow enough fuel to get me someplace to land,

Alex M




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