Originally Posted by freeskihp
if its only on the track than no lockring is needed(no backpressure is applied)
The person in the link was a courier. Plenty of backpressure, I'd assume.
I'm getting ahold of a HED Disc. It's threaded for a freewheel; I'll be making it a suicide hub with RED loctite and possibly also a bottom bracket lockring. For almost all uses this will be fine, including for backpedalling.
The trade-off is that the red ain't ever coming off; if you need to replace the cog, you need to replace the whole axle assembly.