Originally Posted by
tdong
i am still not very happy with the saddle angle on my birdy bike even when I move everything forward and add extra washers at the back suspension. Here is a dump idea please tell me what you think ?
Basically i will cut the tube and drill through for two bolts so that i can move the tube to the front. i can add the metal ring around the two tubes if need to

what about the fit of the bike you trying to correct? if you're trying to shorten the reach, the easiest solution would be to change the stem. you could experiment by rotating the the stem 180º.
probably what you need is a stem insert that has 0 forward stem length.