I was fixing the fuel tank into the fuel tank compartment of my new Avistar 40 and was thoroughly disappointed with the poor vibration isolation. First of all no mention of rubber foam padding was made in the manual. Second, the tank is push fitted into a plywood holder, which simply means that the engine vibration is directly transmitted to the tank !

Is there any Avistar flyers that have mounted their tank without any modification and found no problem with fuel foaming ? Would like to hear experiences out there and what modifications done..........

I plan to sand out the plywood holder so that I can squeeze in some foam in between the tank and holder. Also adding foam all around tank, including the front part which touches the firewall.