Quoting Nils O.
Wow, Vince, that's a cool wheel design. Where did you get those brake disks from?
The disks come from old technics boxes (sorry I don't remenber the references), and about Bricklink, thank you, but I already now the site, if I was asking to you dudes, it's because there isn't a lot of these pieces in "France location" on the site... :/.
Quoting everyone:.
About the inner wheels, I think nothing needs to renforce them, The Meccano tire and my 5 stars wheel design put together are enouth strong (I have tested it ; ) ) But, thanks for the ideas and for your interest guys!