Crankbrothers Long Gem Pump
Small enough to carry in your pocket yet powerful enough to get the job done. The Crankbrothers Gem long pump features a dual piston pump, a high pressure air switch, and a reversible internal head.
Please Note: Mounting bracket and patch kit are not included.
This pleasant little pump is great for road/trail side flats, being able to switch between high and low pressure means you don't have to compromise. I've only used it on a road bike so far and the low pressure setting probably cut the time it took to get the tire up to 100psi in half.
I bought this pump because I didn't want to walk my bike out of the trail if I got a flat. I have used it three times or so. It is a great pump to have on the trails. I installed it onto my bike frame but could easily fit into a reservoir pack. I have a 650B tire and it inflates it very quickly for the size of the pump. Most important thing to remember when inflating a flat tire is that the pump is on the high volume setting to start. Otherwise it will never inflate. Once it gets hard to pump switch it to high pressure and keep going until the wheel seems to have enough pressure in it. It does not have a gauge on it which some people may not like. I squeeze the sidewall of the non flat tire to judge if the flat tire has been inflated enough. It isn't the most accurate method but it helps and gets me back to the car where I have a bike pump. I run presta valves but Crank Brothers says it will work with schrader, too. I have not tried it though. Overall a great pump for the size and price. I would definitely recommend this pump to anyone.
Cuando la compré hace muchos años no sabia usarla y pensé que había perdido mi dinero. Pero un amigo me enseño a usarla y desde entonces somos inseparables. La llevo cada vez que salgo en bici. Es pequeña , resistente, cómoda y liviana, y me sirve para compactar mejor el parche (patch) sobre la tripa (inner tube) , sujetando con la mano el tope de la bomba, y presionando con su fondo (bottom) el parche (pach) colocado en la tripa (inner tube). La recomiendo a todos los interesados.
This pump is the perfect size for any camelback or backpack. It works really well and as saved me a few times when I have had to use it on the trail. Great cheap product price point!