06 Supporting the new tank

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Fuel Tank Replacement

1. 01 Looking ... ... 3. 03 Removal ... 4. 04 The Leak 5. 05 Fitting ... 6. 06... 7. 07 Plumbing... 8. 08 Leak... 9. 09 Put the ... 10. 10 Sight...

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06 Supporting the new tank

The reason the old tanks crack is because they are not properly supported. The polyethylene absorbs gasoline and becomes soft. This allows the tank to flex around the original supports which become stress risers on the corners. Which is where cracks then develop. Usually after the tank has been emptied for extended maintenance or repair work. When the tank is emptied it becomes brittle with evaporation of the gas from the polyethylene. When the tank is refilled the stress risers cause cracking of the tank.

Date: 07/14/2014

Owner: rlborger

Size: 6 items

	IMG_7029 Supporting material in the form of rigid polyurethane sheet and micro/epoxy mix are laid out on the bottom of the fuselage. Date: 10/31/2013 Views: 6002
	IMG_7027 The underside of the fuel tank is covered in plastic wrap which will prevent the tank from bonding to the epoxy in the micro. Date: 10/30/2013 Views: 6536
	IMG_7030 The tank was then put in place so that the urethane and micro could shape themselves to the bottom of the tank Date: 10/31/2013 Views: 5639
	IMG_6956 1 With the tank removed, the micro and urethane could be covered with cork. The cork serves to protect the tank from abrasion by the support materials. You can also see the strip of urethane applied to the top of the aluminum support for the tank ledge. Date: 11/10/2013 Views: 7152
	IMG_7226 Here the urethane on the aluminum ledge has also been covered with cork. The cork both served to protect the tank and the urethane. Date: 01/19/2014 Views: 6705
	IMG_7231 One final check to make sure everything fits and supports the tank. Date: 01/26/2014 Views: 6594