You can use a BB lockring instead of the miche carrier (which sounds like bad advice) to try and hold a fixed cog on freewheel threads. Be aware that, while the BB lockring will help a bit, it won't reliably keep the sprocket on the hub. That's why it's called a "suicide hub". Make sure you leave the brakes on!
You can use a BB lockring instead of the miche carrier (which sounds like bad advice) to try and hold a fixed cog on freewheel threads. Be aware that, while the BB lockring will help a bit, it won't reliably keep the sprocket on the hub. That's why it's called a "suicide hub". Make sure you leave the brakes on!