J
Jasper Janssen
Guest
On Thu, 29 May 2003 06:03:46 -0700, Ryan Cousineau <[email protected]> wrote:
>In article <[email protected]>, Jasper Janssen
><[email protected]> wrote:
>
>> On the contrary, they inflate to about half to a third of the pressure you need. They're mostly
>> used to top off car tires, at least here, not to fill them from empty. It's not like anyone
>> *ever* repairs their own flat car tyres..
>
>It's not the volume of the tire that's the problem, it's the pressure. Since gas station air pumps
>have reservoir tanks and electric compressors, they can pretty much generate as much air as
>necessary. But cars only require about 30-60 psi, and if your roadie tire needs 120 and the pump
>can only output 90, you're going to be unhappy.
The models I'm familiar with have a digital setting for how many bar the thing needs to output, and
then when you hold it to your tires, it fills them to the set pressure. Said pressure is usually
less than half a bicycle's tire pressure, so not terribly useful for that.
Jasper
>In article <[email protected]>, Jasper Janssen
><[email protected]> wrote:
>
>> On the contrary, they inflate to about half to a third of the pressure you need. They're mostly
>> used to top off car tires, at least here, not to fill them from empty. It's not like anyone
>> *ever* repairs their own flat car tyres..
>
>It's not the volume of the tire that's the problem, it's the pressure. Since gas station air pumps
>have reservoir tanks and electric compressors, they can pretty much generate as much air as
>necessary. But cars only require about 30-60 psi, and if your roadie tire needs 120 and the pump
>can only output 90, you're going to be unhappy.
The models I'm familiar with have a digital setting for how many bar the thing needs to output, and
then when you hold it to your tires, it fills them to the set pressure. Said pressure is usually
less than half a bicycle's tire pressure, so not terribly useful for that.
Jasper
