i found this 15 speed bike on trash day a while back, and except for "mountain sport" on the down tube, the seat, and a "mt. sport" on the seat tube, i can't see any brand name. there's a head badge "LW" on it as well. it seems decent, maybe ten years old? suntour derailers, and chang-star(?) brakes and levers.

i don't want to spend any money fixing it if it's an old walmart bike.
thanks.
https://yfrog.com/h4pne3j
https://yfrog.com/h6091gj

The Mt. Sport, I believe is a Roadmaster. As for the LW, I'm clueless.

Looks like you've got a LeeWorld Mountain Sport that's probably from the 1980's

https://www.leeworldco.com/index.htm

thank you so much, i knew the headbadge was the key, i've never even heard of them. worth fixing?

Definately worth cleaning up and getting it ridable again but leave it original.