It's cold and rainy here. So, I might wrench this weekend.

I have an excess of old freewheel style threaded hub rear wheels around and wondered if these can be used for single speed wheels with a BMX type freewheel without redishing

I realize I'm asking you to generalize. But, chainline is not as critical with single speed as it is with fixed -- say plus minus .4cm. As I eyeballed it, it looks like I can get a pretty straight chainline by putting the chainring on the inside of the crank.

Have any of you had experience with this type of conversion?

Thanks