Carl Froehlich
Well Known Member
I read about mud daubers and such clogging up vent lines - leading to fuel starvation and/or a collapsed tank.
I did two mods to address this:
- The last few inches of line is inserted into a 3/8? tube. The 3/8? tube provides the needed surface area to JB weld on a piece of aluminum screen. After the epoxy sets a few seconds on a stochbrite wheel to make it smooth. Done.
- I also wanted a backup in case of ice build up. I added a vacuum breaker valve. The valve is inside the airplane but as it only allows air in, any fuel burping out of the tanks still just goes out of the vents. The valve itself is very light and rated for fuel. I got it from McMaster Carr: https://www.mcmaster.com/plastic-check-valves
Part number 5492K51
The first photo is for the RV-10 or RV-14:
The next photo is the same idea but for an RV-8/8a:
Carl
I did two mods to address this:
- The last few inches of line is inserted into a 3/8? tube. The 3/8? tube provides the needed surface area to JB weld on a piece of aluminum screen. After the epoxy sets a few seconds on a stochbrite wheel to make it smooth. Done.
- I also wanted a backup in case of ice build up. I added a vacuum breaker valve. The valve is inside the airplane but as it only allows air in, any fuel burping out of the tanks still just goes out of the vents. The valve itself is very light and rated for fuel. I got it from McMaster Carr: https://www.mcmaster.com/plastic-check-valves
Part number 5492K51
The first photo is for the RV-10 or RV-14:
The next photo is the same idea but for an RV-8/8a:
Carl