That’s a reality of all hand pumps—it’s really hard to get a tire up to pressure with these things. So another reason Lezyne pumps are so good is because you can actually keep pumping longer than any other brand we tested. With excruciating effort, we could get the Sport Drive HP to pump tires to 90 or 100 psi. It still wasn’t easy, but it wasn’t impossible the way it was with some other models.

If you’re going to use the chain whip you just made, you’ll also need a way to get that cassette off. A lockring remover is a must-have; unless you use one of the shady removal methods I’ve seen on the internet—which I wouldn’t necessarily recommend unless you don’t care much about the condition of the wheel after you use them. I recommend Park Tool’s iterations here that cost about $6, but you’ll need to buy the specific one for your brand/type of cassette. (By the way, I’m assuming you already have an adjustable wrench laying around somewhere to use with this tool. If you don’t, well, you’ll need one of those too.)
The SGA Bike Share is open to all students with a valid UCF Card. There is no rental fee to rent a bicycle, lock, helmet, and light for one work day. Participants may rent and return our bikes from the following four locations: the Student Union, Recreation and Wellness Center, RWC @ Knights Plaza and Lake Claire Apartments. Use of our equipment is strictly on a first-come-first-served basis.

Basically, you’re stuck with toggling between systems for the advantage of a few pumps, and it doesn’t seem worth it. In the original iteration of this guide, I tested 12 pumps and inflated three different tires completely full to their psi rating, and measured how many pumps it took. Yasuda did similarly for his revamped full-length exploration. That’s 36 tires, and I can guarantee there is no difference between 50 pumps and 100—it’s all terrible.
More than any other tool in the kit, a reliable lever makes changing a tire easier, especially if you have road bike tires, which are difficult to remove. However, throughout testing, levers seemed to be the one item more prone to failure and poor design than anything else. For example, I found a random orange lever floating around my basement and I threw it in the test pool for fun—it seemed solid enough … until I began prying at the rim of a tire. It bent directly in half, slowly and smoothly, like taffy, and then was boomerang shaped forevermore.

Dennis Bailey has been actively involved in bike repair and maintenance for almost two decades. He has worked on bikes on bike tours in the United States, Europe, and Latin America. Keith Gates has been repairing bikes for more than 30 years and provides personalized service as the owner of A-1 Cycling, with locations in Manassas and Herndon, Virginia.

Modern bottom brackets use a sealed bearing type construction that keeps water and debris locked out, so they seldom go wrong. Maintenance is impossible so they need replacing when they do wear out. Older style cup bottom brackets need to be re-greased every now and again, and occasionally will need to have their bearings replaced. There are a lot more teeth on the chainring cogs than those on the rear cassette, so need changing less regularly. Cranks usually a solid one piece construction so there is not much to go wrong.