Martial arts film that come out in the 70s or 80s
I can barely remember what the movie is about but I can remember bits and pieces of it. Its about these asian kids (3 or 4 brothers I believe) (one of the brothers is fat lol ) who are taught martial arts by their grandfather (I think). I remember certain parts in the film where they are training outside practicing their balance on logs. I also can remember their toughest challenge is fighting some HUGE black guy in a ring and the end of the movie (best part of the movie I thought). I know this is not a lot to go by but that's all I can remember being that I was a small kid watching this movie. I remember it being a good martial arts / comdedy film. I tried googling this movie but no luck. Can't find any movie close enough with that little description. But I was hoping the little info I did give about the movie would strike someone's memory on what the name of this movie could possibly be. What I do know is... its not 3 ninjas (these are american kids and this movie came out in the 90s and these kids aren't nearly as good as these asain boys in the film I'm referring to). One last piece of the movie I can remember is that their grandfather woke them up early in the morning to practice and when they were getting into their gees they had some kind of fighting routineto get dressed. They didn't put them on normally. Sounds strange but that's all I remember. Any help??