3 Valves in my brand new tubes have broken. Is it possible to buy only the Valves instead of the entire tube? Any recommendations.
You should discover why they broke before you do anything...
I have a feeling the quality of tubes must not be good as a result the Valves gave away.
Are they clinchers? Did the tires rotate on the rims and destroy the valve stems?
Under inflated tires will let the tires slip on the rim and cut the side of a valve stem.
What tire pressure do you use in your tires?
Are the valve stems still centered and upright in the rim or are they now at an angle? If they are at an angle that is one sign of the tube and tire slipping.
How much force was applied to the valve stem when you pulled it through the hole in the rim? Too much force will separate the stem from the tube.
Steve replaces his good ones to metal, so yes you can replace the valve stems.
Sid
Is it the valve 'core' or the valve 'stem', the rubber shaft part of the tube that is broken?
You can buy valve cores at any auto store, Schrader T-13, fits most all valve stems of auto and larger motorcycle tubes.
At times the valve core can corrode from moisture, in the compressed air, and stick the valve core open, causing a slow leak. Yearly its a good idea to deflate, and remove the core, and spray some WD-40 on the core, and replace.
If the stem is busted, then you will need new tubes, or maybe patch the stem if its torn at the rubber tube, or even do a replace of original type metal stem to the tube.
Sid, I assume your 1915 still has clincher tires. That makes Denny's first question especially pertinent. What tire pressure have you been using?
I have a tube that has been on my car for forty years.It has only been driven for the last 7 years,and I can only put air in not out.Even with the core out.I can't check my air pressure,But it always looks good.
Steve - I have the Firestone tyres. And I have been running with a tire pressure of around 50 PSI. Very rarely the machines in India can have fill more than 50 PSI.
My Valves have bee cut from the side of the stems on at least 2 tyres. Impossible to get either new tubes or similar valves in India. So, if I can get Valves happy to import those or do I need to buy new tubes?
A pressure of 50 psi in clincher tyres is marginal. I suspect your stems being cut from the side is because the pressure may have become low enough to let the tyres slip. A pressure of 60 psi rear and 65 psi front would be better. I run mine at 65 psi rear and 70 psi front.
Not being able to see your tubes I don't know whether you need to replace whole tubes or just stems. Either way, metal stems are preferable to rubber. You can buy tubes with metal stems already built in, or you can buy tubes with rubber stems, cut off the rubber stems, and replace them with metal stems. This shows how I do it: http://dauntlessgeezer.com/DG110.html.
If you buy new tubes, you will most likely find that they're made in China or — guess where — India!
Sid, 50 psi is not enough. The only thing keeping your tyre in place on a clincher rim is the tyre pressure. I never let mine get under 60 psi. Newer service stations here have hoses which top out at 60psi, so I just scrape in. If you don't have your own compressor, it might be best to find a place where they service trucks to get higher pressure. It is always a good idea to have your own gauge to measure the pressure too. Garage ones can be mighty well abused and not be too accurate.
Hope this helps.
Allan from down under.