|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Innertube Porosity?
On Thu, 29 Dec 2005 21:56:00 -0500, Steve Sr. wrote:
I was wondering if anyone has any information on the porosity of various kinds / brands of innertubes. By porosity I mean the very slow leakdown rate that occurs with sound tubes over days and weeks. You know... The reason you are always topping up your tires to prevent pinch flats. My current interest is any differences between the regular and "lightweight" road tubes of the same size. I am also wondering if "brand" makes any difference as well. There's certainly a difference, but I've never noted exactly how much. Of course latex tubes need to be pumped every day. Lightweight butyl tubes maybe every 3-4 days, and regular tubes once a week or less. Besides the difference between lightweight and regular tubes, there are differences between brands. Some are thicker than others. When I buy tubes, I worry more about valves, and how easily the tube can be patched. These days I buy only Michelin tubes, because the valves never leak, the pump seals well, and there's minimal flashing/seams to interfere with patching. Either the regular "Airstop" or lightweight models are fine. Matt O. |
Ads |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Innertube Porosity? | [email protected] | Techniques | 62 | September 5th 17 06:21 PM |
Innertube Porosity? | [email protected] | General | 20 | January 1st 06 04:30 AM |
Innertube Porosity? | jim beam | General | 0 | December 30th 05 04:59 PM |
Innertube Porosity? | Matt O'Toole | General | 0 | December 30th 05 03:26 PM |
20" Long Valve Innertube? | PhilO | UK | 4 | June 24th 05 04:02 PM |