This is quite an involved procedure:
- We cut a brand new tank in 3 parts, left, right and the middle
- We make the fittings for the extension for 4cm (19l) or 5 cm (21l)
- We gas-weld the extensions carefully to keep the overall shape intact
- All paint is removed from the outer surface
- Water-test: if it leaks it is re-welded
- Pressure test: the tank is hermetically sealed, through a tire-valve a pressure of 5psi is applied and after 5 minutes tested if the tank holds.
- If the tank loses pressure detergent-solution is used to find the fine nooks and crannies where pressure escapes, they are re-welded until the tank remains tight
- The tank is now ready for surface priming and inside application of a special fuel resistant synthetic polymer cover.
- After overnight hardening three layers of paint are applied – again overnight hardening is allowed
- Finally three layers of a special hard protection cover/layer are applied
- The tank is now ready to be shipped to you!
If you wish to keep your side frames we will also supply an extended lower frame-bracket made to fit the wider tank body.
Click to enlarge the pictures:
Here you can see a pressure testing, up to 7.5 psi holding: