Welcome to Minirider's,
First up get the formality's out of the way, and drop in to the Introduce Yourself thread and say hello.
http://www.miniriders.com/general-chat/
That little bike's had a hard life !!
I don't know what brand it is, but starting at the front the wheel look's too small ?
The fork's are on backward's, left is on right right is on left.
The air filter look's like it's off a Suzuki JR50, that mount it hang's on has been welded on as an extra
The forward facing manifold is Kawasaki KLX style.
The frame looks to be a modified CRF50 one, rear upper engine mount plate has been added over the original bolt hole.
It's got a CRF50 style petrol tank, with a chinese copy Honda seat.
It has a Yamaha style kill switch.
It's got an electric, top start, Loncin 70cc 4 speed auto engine in it.
The rear swing arm and rear shock look's like they're off a '70's Yamaha GT80, maybe the wheel too (it's too big for the bike anyway)
The chain is done up way too tight and has rusty link's (need replacing)
The rear upper shock mount's have been cut off something and welded on too.
So yeah, someone has had a heap of dead bike's in their shed and though why not fix up this old thing into a bike.
Cheer's, Craig