Nitropeewee, that's 52mph, not kph? That's more than fast enough. Bicycles aren't built for those stresses. Things will break, and also the cops will take a dim view of an MB doing 60mph, as the OP wants to do.
You know, I've had enough of stupid attitudes on this site, especially the last couple of days. This is the proverbial 'straw that broke the camel's back', as minor as it seems. I'll leave you all to your own devices from now on.