How can we pump air into a bicycle tire without opening the valve?

• Benjamin_harsh
In summary, the conversation is discussing ways to pump air into a bicycle tire without opening the valve. The options mentioned include using a rubber hose or a plastic ball to block the air from getting out, as well as finding alternate ways to fill up the tire without opening the valve.
Benjamin_harsh
Homework Statement
How can we pump air into bicycle tire without opening the valve?
Relevant Equations
How can we pump air into bicycle tire without opening the valve?
How can we pump air into bicycle tire without opening the valve? I mean If valve (dunlop bicycle valve)is closed, then how pumped air going into the tire?

As soon as the pressure from the pump is higher than the pressure in the tyre, the air coming out of the small hole pushes the rubber hose outwards and finds its way through

I think the ones without a rubber hose have a little plastic ball that blocks the air from getting out but not from getting in.

Benjamin_harsh

Do any of these responses answer the core question?

It seems to be the OP is asking for an alternate way to fill up a tire without opening the valve - regardless of what type of valve it is.

I can think of at least one way of getting air into a tire that doesn't open the valve. Most coastal cities will be able to accommodate.

[ EDIT ]

I mean If valve (dunlop bicycle valve)is closed, then how pumped air going into the tire?

Okay, maybe you guys are on the right track.

DaveC426913 said:
Okay, maybe you guys are on the right track
Another direct answer could be 'Pump !'

1. Can we pump air into a bicycle tire without using a pump?

No, it is not possible to pump air into a bicycle tire without using a pump. A pump is necessary to create the pressure needed to inflate the tire.

2. Is it possible to pump air into a bicycle tire without opening the valve?

No, the valve must be opened in order for air to enter the tire. The valve acts as a one-way passage for air to enter the tire and prevents it from escaping once inflated.

3. How can we pump air into a bicycle tire without losing any air?

To minimize air loss while pumping air into a bicycle tire, make sure the pump is tightly connected to the valve and that there are no leaks. Additionally, it is important to pump air in short, controlled bursts rather than continuously to prevent air from escaping.

4. Can we use a straw to pump air into a bicycle tire?

No, using a straw to pump air into a bicycle tire would not be effective. A straw does not have the necessary pressure to inflate a tire and it would be difficult to create a tight seal around the valve.

5. How much air pressure is needed to pump a bicycle tire?

The recommended air pressure for a bicycle tire is typically between 40-65 psi (pounds per square inch). However, the specific pressure may vary depending on the type of tire and the rider's weight. It is important to check the tire's sidewall for the recommended pressure and use a pressure gauge when pumping to ensure proper inflation.

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