Hope this is ok with the mods that I post in this room with this question, I just need as many people to see it as possible so I can get it sorted urgently.
I am putting a newer Haro together for a mate, he has trouble parking at work, so he's going to drive towards work, park up and do the last mile on a bmx. He's on his way now to collect it.
He only wants a back brake, so I have robbed the brake off another newer bike that I bought for parts.
On the bike I took the brakes from the, mounting post is like this. The caliper arm slides on, and the small metal spring bit, pokes into one of the three holes.
![](http://i217.photobucket.com/albums/cc202/stevepeanut/P1080273_zps0037b46f.jpg)
But on the Haro, there are no little holes for the spring to go into. I can't figure out how to make the brake set up work.
Am I missing something obvious here?
![](http://i217.photobucket.com/albums/cc202/stevepeanut/P1080272_zpse25c51df.jpg)