Gas tank pads?

[Ron from Montréal]

What are those for?

[mikeg]

Vibration dampener
Mike

[Ron from Montréal]

Vibration dampener
Mike

Interresting! Thanks. Any suggestion on what material to use to replace them?

[Ragwing nut]

I would use dynaliner. already has sticky back

[astjp2]

Mine were felt on the '41

[Hank Jarrett]

Felt on the 40, 41 and 45. Glued to the tank. PITA to get off. I thought they were mainly for chaffing and to keep the tank walls from "drumming" but that was just a guess with nothing to back it up.