haahaa
i have an xr50 as u can c from my foto and i jump it pretty big. i have jumped it off minibike fmx ramps and nothing has happened. its not brace and i weigh 105kgs!!! u have no probs. all u need to do is absorb the impact of the landing. the only thing that has taken it in the ass from jumping is the pegmount. and even that isnt that bad (its a bit bent). i have bent the subframe, but thats when i landed back on the bike after goin off that ramp and landed on the very back of the seat. in my opinion, honda overcompensated for strength with these beasts. i was doing the ramp with the stock froklegs aswell. i now have redbaron chromo forklegs.
man, dont worry too much bout a new frame and swinger. if anything the swinger is stronger than the frame. i have landed whips sideways and nothing has twisted or bent. (keeping in mind i am over 100kgs). have also cased a few doubles. nothing bent/broke.
stock 50s r the shit man
laterz
PS: bike now has a 75cc kit in it