Tech editor Nick Legan addresses reader questions on gear ratios for big days in the mountains… or the hills

This week's tech roundup also includes: SRAM mountain bike derailleurs, Wheels bottom bracket adapters, SRAM Red, Shimano patents and Friday flicks

Caley Fretz tells you what you need to know about the new SRAM Red

For those interested in a bit more detail, Caley Fretz focuses in on a few features that warrant a closer look

Can I rebuild SRAM Red shifters?

Can I combine SRAM mountain and road components to produce hillclimb gearing?