Cassettes & freewheels
Our first question about Spin's Unobtainium Monobloc Cassette was, is it really made from Unobtainium? Sadly no. Our second was, £250 for a cassette. What's so special about it?
To be mated with the excellent ENO hub, White Industries manufacture a splined fixed gear cogs made out of 8620 case hardened steel, 78 grams of it for a 18T cog to be exact. The cogs are precision cut to mate to the fixed gear hub, rather than the traditional screw on method.
Halo’s CNC machined track sprockets make perfect companions for production fixed wheelsets thanks to plentiful sizes, bridging the gap between the cheap, poorly machined if functional oval type commonly spotted on converted winter hacks and hand polished exotica costing the lion’s share of £60. However, competition is very tight at this end of the market and some specialist brands including EAI offer marginally better detailing for similar money.
Miche’s Primato cassette continues the groupset’s theme of high performance, precision engineering and very keen pricing. With it’s high lustre chrome finish and a choice between Shimano and Campagnolo patterns it’s a great choice for racing, audax, winter training, and even a spot of light touring.
The EAI Gold Medal Premium sprocket is different. Most fixed sprockets are designed with bevelled teeth- slants designed to counteract imperfections in chain tension and/or chainline. However, these often make for a noisy transmission until they bed in.