2
votes
2answers
219 views

Can I approximate how much air pressure is lost from disconnecting the hose?

I have a floor pump intended for mainly rather low pressure tires. It lets out quite a bit of air from the hose when disconnected. Can I calculate (approximately) how much air pressure is lost by ...
0
votes
2answers
201 views

How can I inflate Presta valve tires using a Presta compatible pump without bending the valve stem?

After my $20 floor pump from the hardware store gave out. I bought a rather more expensive one rated to 160 PSI. The pump has a metal nozzle on it, with a Schrader opening on one end and a Presta ...
1
vote
2answers
3k views

Cannot fit pump nozzle properly to the presta valve of my tyre

I bought a Reebok Bike pump yesterday which is this one. I have presta valves for my Jamis Allegro Sport 2012 hybrid bike and I was trying to pump the tyres using the pump as part of my monthly ...
8
votes
6answers
35k views

How to inflate a tire with a Presta valve?

My new bike has these thin tires with a type of valve I haven't usedbefore. I searched online and found out it's called a Presta valve, and it's pretty common and popular. I'm finding it annoying and ...
7
votes
3answers
1k views

Why does my floor pump only fill a presta valve tire after a pop sound?

I have had a generic floor pump from an online bike catalog company for years, and have filled many Schrader valve tires with it without any problems. I have recently started to use Presta valve ...
4
votes
3answers
5k views

Could I be pumping up my tyres the wrong way?

I now have my first road bike. When I am pumping up the tyres with what seems like a sturdy pump (that you stand on and push with two hands), I can barely get to around 100 psi, even putting my back ...
3
votes
3answers
1k views

Air compressor to fill up to 60 PSI

I am looking for an air compressor and wish to get one which is not under or over powered. I am looking at one in a catalogue which has the following attributes: 40 Litres/min free air delivery 1hp ...
1
vote
4answers
428 views

New pump - Topeak |Pocket Shock

I bought this new pump, but i think I made a mistake. I need it for my road bikes, with presta valves. I don't understand how I connect the pump to the presta. Is it even possible? do I need an ...
7
votes
5answers
3k views

How to safely remove pump off presta valve?

No matter what I try I can't seem to remove the pump off my threaded presta valve without injuring my hands on my wheel spokes. I'm beginning to think I'm doing something wrong. After unlocking, I ...