Talk Morgan Forums Morgan Sports Cars Morgan Three Wheeler & Super 3 More worries - cracked gas tank.

Here is the cracked fuel tank bracket after repair. I made up the repair panel from 2mm aluminium and bonded it over the original bracket with high strength polyurethane sealant [Bond-It 'Premiere' PU18]. The repair panel is larger than the original welded bracket so that it has a good broad mating surface with the original bracket tab, as well as overlapping onto the tank itself.


I think I have also identified why the bracket failed in the first place. The seatbelt type strap around the tank was quite loose. This is apparent in the photo below:

Look how the strap has worked itself to the bottom of the slot in the bracket. I don't think it could do this if it was correctly tensioned. Also, we found that the tank itself could be moved up and down a significant amount when measured at the rear of the tank (adjacent to the rear wheel). Centering up the strap in it's bracket and tightening the strap tensioning nut produced a tank that was rock solid. I would estimate that we tightened the adjuster by around 8mm of thread - which is quite a lot!

I'm confident that this problem has now been solved with the reinforced bracket and correctly tensioned strap. The take-home message here is that we need to be checking the fuel tank strap tensions when we do our other maintenance checks.