Airplane travel with bicycles - Page 11

01-16-2005, 11:20 AM

On Sun, 16 Jan 2005 16:54:01 +1100, Dominic Sansom quoth:
>
> I had two tubes blow on separate occasions while flying. Both were on
> road bikes (never had a problem with lower pressure MTBs) and they were
> inflated over 110psi.
> I now make sure I deflate all tubes when I fly.

That's quite odd, since the change in tire vs. outside air pressure
difference has to be less than 14PSI...probably only 4-6PSI.

bkr

01-16-2005, 11:20 AM

On Sun, 16 Jan 2005 16:54:01 +1100, Dominic Sansom quoth:
>
> I had two tubes blow on separate occasions while flying. Both were on
> road bikes (never had a problem with lower pressure MTBs) and they were
> inflated over 110psi.
> I now make sure I deflate all tubes when I fly.

That's quite odd, since the change in tire vs. outside air pressure
difference has to be less than 14PSI...probably only 4-6PSI.

bkr

01-16-2005, 11:20 AM

On Sun, 16 Jan 2005 16:54:01 +1100, Dominic Sansom quoth:
>
> I had two tubes blow on separate occasions while flying. Both were on
> road bikes (never had a problem with lower pressure MTBs) and they were
> inflated over 110psi.
> I now make sure I deflate all tubes when I fly.

That's quite odd, since the change in tire vs. outside air pressure
difference has to be less than 14PSI...probably only 4-6PSI.

bkr

01-16-2005, 10:42 PM

Beaker Wrote:
> On Sun, 16 Jan 2005 16:54:01 +1100, Dominic Sansom quoth
>
> > I had two tubes blow on separate occasions while flying. Both were o
> > road bikes (never had a problem with lower pressure MTBs) and the
> wer
> > inflated over 110psi
> > I now make sure I deflate all tubes when I fly
>
> That's quite odd, since the change in tire vs. outside air pressur
> difference has to be less than 14PSI...probably only 4-6PSI
>
> bkr
Odd?... I thought so too at the time of the first blow out. So I di
some research and like you say the difference should be no more tha
one atmosphere (15psi) so the next time I flew I left the tubes at ful
pressure... and one blew again. Weak tubes? Coincidence ? Who knows..
but the hassle of changing tubes at the start of a cycling holiday
twice, made me a confirmed deflater

--
Dominic Sanso

01-16-2005, 10:42 PM

Beaker Wrote:
> On Sun, 16 Jan 2005 16:54:01 +1100, Dominic Sansom quoth
>
> > I had two tubes blow on separate occasions while flying. Both were o
> > road bikes (never had a problem with lower pressure MTBs) and the
> wer
> > inflated over 110psi
> > I now make sure I deflate all tubes when I fly
>
> That's quite odd, since the change in tire vs. outside air pressur
> difference has to be less than 14PSI...probably only 4-6PSI
>
> bkr
Odd?... I thought so too at the time of the first blow out. So I di
some research and like you say the difference should be no more tha
one atmosphere (15psi) so the next time I flew I left the tubes at ful
pressure... and one blew again. Weak tubes? Coincidence ? Who knows..
but the hassle of changing tubes at the start of a cycling holiday
twice, made me a confirmed deflater

--
Dominic Sanso

01-16-2005, 10:42 PM

Beaker Wrote:
> On Sun, 16 Jan 2005 16:54:01 +1100, Dominic Sansom quoth
>
> > I had two tubes blow on separate occasions while flying. Both were o
> > road bikes (never had a problem with lower pressure MTBs) and the
> wer
> > inflated over 110psi
> > I now make sure I deflate all tubes when I fly
>
> That's quite odd, since the change in tire vs. outside air pressur
> difference has to be less than 14PSI...probably only 4-6PSI
>
> bkr
Odd?... I thought so too at the time of the first blow out. So I di
some research and like you say the difference should be no more tha
one atmosphere (15psi) so the next time I flew I left the tubes at ful
pressure... and one blew again. Weak tubes? Coincidence ? Who knows..
but the hassle of changing tubes at the start of a cycling holiday
twice, made me a confirmed deflater

--
Dominic Sanso

01-17-2005, 06:04 AM

On Sat, 15 Jan 2005 19:25:50 -0800, "Mark Weiss" <[Only registered and activated users can see links. ]> wrote:

>> Deflate tubes as some cargo holds are not always pressurised and a loud
>> BANG as your tyres burst may not go down well at 32,000ft.
>
>Most aircraft baggage compartments are pressurized to nearly the same
>altitude as the passenger cabin -- around 8,000 feet MSL. This is because
>the aircraft carry lots of baggage that is sensitive to altitude -- animals,
>for example. Bike tires don't blow at those altitudes. Last summer, when I
>flew with my bike from the US to Europe and back, the tires did fine without
>deflating them.
>
>On the other hand, deflating them a bit certainly can't cause harm ....

Worst case, the airplane leaves earth's atmosphere you get another 15 PSI.

Of course that introduces other problems that may interfere with riding at your
destination.

Ron

01-17-2005, 06:04 AM

On Sat, 15 Jan 2005 19:25:50 -0800, "Mark Weiss" <[Only registered and activated users can see links. ]> wrote:

>> Deflate tubes as some cargo holds are not always pressurised and a loud
>> BANG as your tyres burst may not go down well at 32,000ft.
>
>Most aircraft baggage compartments are pressurized to nearly the same
>altitude as the passenger cabin -- around 8,000 feet MSL. This is because
>the aircraft carry lots of baggage that is sensitive to altitude -- animals,
>for example. Bike tires don't blow at those altitudes. Last summer, when I
>flew with my bike from the US to Europe and back, the tires did fine without
>deflating them.
>
>On the other hand, deflating them a bit certainly can't cause harm ....

Worst case, the airplane leaves earth's atmosphere you get another 15 PSI.

Of course that introduces other problems that may interfere with riding at your
destination.

Ron

01-17-2005, 06:04 AM

On Sat, 15 Jan 2005 19:25:50 -0800, "Mark Weiss" <[Only registered and activated users can see links. ]> wrote:

>> Deflate tubes as some cargo holds are not always pressurised and a loud
>> BANG as your tyres burst may not go down well at 32,000ft.
>
>Most aircraft baggage compartments are pressurized to nearly the same
>altitude as the passenger cabin -- around 8,000 feet MSL. This is because
>the aircraft carry lots of baggage that is sensitive to altitude -- animals,
>for example. Bike tires don't blow at those altitudes. Last summer, when I
>flew with my bike from the US to Europe and back, the tires did fine without
>deflating them.
>
>On the other hand, deflating them a bit certainly can't cause harm ....

Worst case, the airplane leaves earth's atmosphere you get another 15 PSI.

Of course that introduces other problems that may interfere with riding at your
destination.

Ron

01-17-2005, 07:16 AM

Dominic Sansom wrote:
> Beaker Wrote:
>> On Sun, 16 Jan 2005 16:54:01 +1100, Dominic Sansom quoth:
>>>
>>> I had two tubes blow on separate occasions while flying. Both were
>>> on road bikes (never had a problem with lower pressure MTBs) and
>>> they were inflated over 110psi.
>>> I now make sure I deflate all tubes when I fly.
>>
>> That's quite odd, since the change in tire vs. outside air pressure
>> difference has to be less than 14PSI...probably only 4-6PSI.
>>
>> bkr
> Odd?... I thought so too at the time of the first blow out. So I did
> some research and like you say the difference should be no more than
> one atmosphere (15psi) so the next time I flew I left the tubes at
> full pressure... and one blew again. Weak tubes? Coincidence ? Who
> knows... but the hassle of changing tubes at the start of a cycling
> holiday, twice, made me a confirmed deflater.

Why is it all or nothing? Seems like one could let some air out -- down to,
say, 70 psi or so -- and not worry about popping tubes. Wouldn't pumping
'em back up to full pressure be quicker and easier that way?

Just a thought...