3D printed fuel and air trap tanks
Keith sent me the .stl files for the fuel tank. He calculate 1.3L or 44 oz. Plenty for the X-45. Back end printing here in translucent PETG filament. Keith loaded the fuel tank files up to Thingiverse so anyone could download and use them. Thanks Keith!
https://www.thingiverse.com/thing:5422922
Front end off printer. Designed for a standard Dubro stopper
Tank parts staged beside fuse
Two baffles were printed and installed to prevent excess sloshing in the long tank
Winged felt clunk used...I've used these in all my foamy conversions and they suck out all of the fuel
Tank hardware and baffle layout. Baffles were installed on right edge of the blue tape. The rear end has a little more space for the clunk to flop around in
Baffles were tacked in with thin CA
Tanks coated on inside with laminating epoxy. I used West Systems. Bent brush was to make sure the epoxy got everywhere behind the baffles. Sharpened coat hanger wire stands held the tank halves up during cure
After inside cure the tank seam edges were sanded and then bonded together with thickened epoxy and allowed to cure. Then the joint was wrapped with two layers of glass tape and the outside was coated with epoxy and allowed to cure. A single coat hanger wire up the center held the tank up during cure (sorry no pic)
AIr trap tank parts printed and brass tubes and filter pickup installed. Keith also loaded the air trap tank on to Thingiverse. There are two versions, one with pump mounting lugs for the K-45 pump on top and one with no lugs on top. This one is with out the pump lugs:
https://www.thingiverse.com/thing:4305344
AIr trap tank coated with epoxy inside and out. Tank body sitting on a piece of perforated release film with peel ply underneath
Air trap tank bonded together with thick epoxy
Vent tube bonded to main tank
Finished tank staged next to fuse with clunk line and stopper assembled and safety wired. The clunk flops around inside very well
Tank assembled and leak checked under water. No bubbles!
Same for air trap tank
Tanks ready to install. Kevlar thread was wrapped around air trap tank to keep pump pressure from splitting seam. I had one leak and Kevlar thread solved the issue since.