newbe with a HF speed ?

Hi
I'm in the planning stages and want to use the 1800# HF frame.
I looked at the online PDF manual and it says not to excede 45mph.
Has anyone had any probs doing the normal posted speeds?
thanks
I'm in the planning stages and want to use the 1800# HF frame.
I looked at the online PDF manual and it says not to excede 45mph.
Has anyone had any probs doing the normal posted speeds?

thanks