If it was worrying me too much, I would personally glue some backing plates onto the "hull" (I like that description of it) on the inside to make sure those +8 kgs didn't matter. Some form of stiff, somewhat thick plastic would do, with no fear of corrosion/electrolysis.
Edit: Just a thought. I am out of the threewheeler-world, so to speak.
Last edited by AQM; 29/04/15 08:18 PM.
