I just did a single speed conversion on my Chameleon hard tail. There are a myriad of single speed options for HG drivers, and even a few for SRAM drivers, but there doesn't seem to be much yet for microspline.
I ended up buying a Ti cog and cassette lock ring from Boone Technology. They seem a little sketchy. The thread on their lock ring would not mesh with the hub threads on a DT 240 hub or a Hadley hub.
I ended up making a custom spacer on the lathe that steps down to the smaller diameter of a shimano lock ring, and used it with the shimano piece. Also, one other spacer to get the distance from center correct so that the rear cog and front chain ring are in a line.
I ended up buying a Ti cog and cassette lock ring from Boone Technology. They seem a little sketchy. The thread on their lock ring would not mesh with the hub threads on a DT 240 hub or a Hadley hub.
I ended up making a custom spacer on the lathe that steps down to the smaller diameter of a shimano lock ring, and used it with the shimano piece. Also, one other spacer to get the distance from center correct so that the rear cog and front chain ring are in a line.