Originally Posted by sam_cyclist

I test rode a road bike with mechanical discs a few weeks ago. The brakes literally would not stop at all. I grabbed both levers and squeezed them as hard as I could just to slow the bike down. They were incredibly weak stoppers. I WALKED the bike back to the shop.

The employee gave me some lame excuse about the brakes not having been broken in. I feel sorry for anyone who bought that bike.