Fair enough, thank you very much though, I guess the worst case scenario is that i have to return the adapter and have to buy another disc brake. A couple of questions though, 1. Are all Post mount sizes the same and 2. If I took a picture of the bike brake, would it help you give me more concrete evidence or not?

Thank so much for the help, I told my son about using the front brake and he tried it through the woods and said that it did slow him faster and realizes how little control you have with just a back brake!!!

Chris