Hi, does anyone know the type of plastic used for Sherco fuel tanks circa 2004 ? 

I’m assuming it’s HDPE , high density polythene ?   I have a little sherco 50, and i’m going to plastic weld the fuel tank around the petcock area as it’s damaged and had previously been fixed with Epoxy . 

 

Thanks 

I had a 2002 with a translucent tank and the tank grew over time.  I ended up having to slot the mounting hole and it got harder and harder to push down between the tubes.  I read somewhere that it is the alcohol in US gas that causes the expansion.  I don't think HDPE does that.  Does it?

Hi don’t know , maybe the ethanol in US fuel ? this tank is also a translucent type material , it’s damaged slightly around the petcock area, I’ve removed the fixing part , just need to weld up the small splits , but it’s important to get the right filler rod material , Thanks 

Pretty sure the transparent fuel tanks are nylon.

I think I heard nylon also but have no source to back it up, maybe this.

https://www.ducatimonster.org/threads/m1100evo-nylon-fuel-tank-coating.338538/

Definitely not HDPE, too flexible. Fairly certain it's nylon 

Thanks for the info, I've ordered some nylon filler rods for the plastic welder, i'll give it a go :-)