With Baby Boomers becoming grandparents, the stodgy old codger and plump, cookie-baking white frizzy haired grandparents are getting a massive facelift.Tired of the old standbys of Granny, Grandma, Grandpa etc.Others are based on intensity, such as increased distance and duration, and using high gearing and low cadence.Either way cyclists’ knees are among the most vulnerable joints for repeated stress injury, and it’s not uncommon to hear of a rider who’s had to resort to knee surgery in their 40s and even 30s.To start, let’s talk a little bit about the system of measurement.is one of several relative measures of bicycle gearing.Each shows the bike, wheel size, and drivetrain on the left, then the granny gear ration (front x rear) and gear inches. And while 1st isn’t the most frequently used gear on this bike, there have been plenty of times where it came in handy, such as the High Atlas in Morocco and the Transnevada.
Spinning can be the key to keeping stress off the knees during a nasty climb, particularly important in the latter half of a big day. The likes of Jay Petervary and Josh Kato might not require the same granny gear as a skinny guy with bird legs (such as myself).It also depends on how much you pack, and where you ride.An expedition bikepacker heading to the Himalayas will have very different needs than a racer over relatively flat terrain.My ingenous 11 year old sister-in-law came up with the names "Amma"- for the Grandmother and "Adda" for the Grandfather.She derived the names from lord of the rings when one of the Elves were talking.Essentially to calculate gear inches, use this simple formula: An equivalent system customarily used by continental European cyclists is , which measures the distance travelled with each turn of the crank.That is, metres of development is calculated using the same equation replacing inches in diameter with meters of circumference.It’s not uncommon to hear about a cyclist being sidelined by a knee injury. However, riding long hours with a heavy load can also wear on your knees — if not immediately, over time. Even more so while bikepacking — which usually involves extended riding time on a bike loaded with gear.As one would expect, many knee problems arise from bike-specific issues like saddle height and setback, cleat position, and improper bike sizing.For reference, let’s take a look at the high gear to add perspective to the overall range of each of these bikes and drivetrains.The 2×10 offers the widest range of gearing which is great for a grueling expedition.