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yeah, i copied the design from the gates model, so it has essentially the same design as they do, in every way except the way that its mounted, mine has 6 flathead screws to hold it on. also, i got mine normally anodised, whereas they use some special gritty anodising. (i bought my chainring)
i was talking to the guys at gates for a while 6 months to a year ago, about a fixed version of their rear cogs, and they said it was on the way, even showed me pictures! but theyre using the standard thread on kind. aluminum on aluminum = XP imo...
only one more post to go!
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phew... glad that torque/motorcycle bit seems to have petered out.
im putting together a fixed gear belt drive bike pretty soon here. i didnt like any of the hub options out there for using a single speed one, so i decided to make my own rear cog. anyways, ive got a solid model i can upload to the site if anyone would like, so they can make their own too (or have someone do it for them). it mounts on a six bolt IS disk brake flange.
** note: requires a CNC
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actually, i never saw those phil cogs before, but i guess what i would do now, knowing they exist, and if i didnt have access to a CNC, is buy one of those and just put it on a lathe and cut out the inside of it with a o-ring groove cutting tool until there are some holes between the teeth where there should be. i wonder why phil doesnt... maybe its patented?