Single ring set ups also known as 1x drivetrains have become the norm with both Shimano and Sram offering <a href="http://Shimano-xt-1×11-drivetrain” target=”_blank” rel=”noopener”>dedicated 1x group sets. But for the dedicated homebuilder you can’t beat a good ghetto 1×10 set up. You get all the advantages that come from having a single ring set up ie, reduced weight, less dashboard clutter, reduced chain wear, greater ground clearance and enhanced reliability.
Apart from the chain and cassette the two most important components you need for a 1×10 set up are a clutch mech and a narrow/wide chain ring. The clutch mech ( a rear derailleur with a clutch) pulls the chain extra tight over the chain ring so it doesn’t bounce off when traversing rough terrain, but loosens the chain when shifting gear. Narrow/wide chainrings are single rings with alternating narrow and wide teeth which hold the chain on the chainring. They generally come in 30,32,34 and 36 tooth configurations, a 32 seems to work best for most riders on most terrains though.
The only major obstacle you might have to overcome is the issue of chain line. Generally it’s nothing a few washers can’t fix and there is a whole load of advice on the issue here .
If you’re still stuck just watch