Brompton On Hills

Cycling in Switzerland requires the ability to go up and down hills. Some of the climbs are long and steep, others are short and steep, and yet more are shallow but long climbs. That’s where bike gears come into their own. The more gears you have the more precisely you can control the amount of effort you’re making. With a mountain bike the gears are designed to help with climbing. With road bikes they can be set to make hill climbs easier or harder.

Six Gears with a Brompton

A Brompton bike may have just three to six gears. I went for a ride on one yesterday, on some undulating swiss hills in Vaud, at the foot of the Jura. The first thing I noticed is that the steering is really nervous compared to a normal bike. That’s because the wheels are tiny, so the torque needed to turn the wheel is minimal. You need to focus a lot of thought on ensuring that you don’t oversteer. I think that Brompton bike wheels are a third the size of normal wheels, or maybe half as big. With a normal bike wheel steering is more sluggish, therefore it feels natural.

Bigger Gaps Between Gears

The second thing you notice with the Brompton is that the difference between gears is greater. The hard gear is really hard, so it doesn’t get used much on hilly terrain. You need to shift down to the second and third gears, to make cycling possible. The easiest gear was too easy on hills, but the middle gear made it more challenging. The result isn’t that I slowed down. I think it sped me up. A Brompton, on mountaineous roads, requires you to find the least worst gear, and find a speed that is sustainable. In my case that speed saw me cycling faster than I would, on a normal bike, not by choice, but by necessity. To go slower would make the gear harder, so once I had inertia I tried to maintain it.

No Drinking

Usually I have no problem drinking and cycling but with the Brpompton I was fully focused on trying to find the right gears, but also being careful not to oversteer. I kept both hands on the bars at all times. I didn’t feel comfortable reaching to have a drink. The Brompton is a different beast to most bikes. The fitter you are, as a cyclist, the more you can adapt to the challenge of riding it, but it would take a few more rides before I felt comfortable riding it, and taking a sip of water.

Average speed

I got up to 37.2 kp/h on the Brompton but my average speed was 17 km/h. Usually I am at 20+ kilometres per hour and my peak is closer to 50+ km/h. My total ascent was 223 meters, according to the Garmin Etrex SE. I don’t know how the effort compared to riding the usual bikes because I didn’t measure my heart rate with a garmin watch this time.

And Finally

Bromptons are not cheap, so it makes more sense to get a normal bike for the same price, or cheaper. I tried this experiment because I felt too lazy to load the bike into the car, if I didn’t then ride the bike due to weather or a change of plans. I can keep up with people on electric bikes, despite the difference in riding comfort and style. My proof of concept test was a success, but rationally cheaper normal bikes make more sense.