Originally Posted by mickw

This may seem basic , but I would look the frame all over and see if there are any numbers stamped into it.
Generally near the bottom bracket area is usually where you will find it.
Just google search the number and that will get you started usually.
I did this on an older mountain bike (Murray) and found it was one of the last really terrible ATB models they made.
It was kinda fun though just knowing .....
Mick