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Old 08-05-2019, 01:14 AM   #1
Chris Haynes
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Default Schrader valve stems

Are inner tubes available that use the Schrader valve stems?
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Old 08-05-2019, 08:38 AM   #2
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Default Re: Schrader valve stems

If a person gets the rubber stem tube, the stem can be carefully cut off for installation of the OEM style Schrader valves. I've not yet seen a tube come with the OEM style valves.
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Old 08-05-2019, 02:29 PM   #3
Royce P
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Default Re: Schrader valve stems

Here's a tutorial on how to do it:


https://modeltfordfix.com/time-to-re...lincher-tires/





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Originally Posted by Chris Haynes View Post
Are inner tubes available that use the Schrader valve stems?
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Old 08-06-2019, 11:35 AM   #4
Scottio57
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Default Re: Schrader valve stems

I ordered tubes not long ago that had this very kind of valve stem. They were available everywhere.
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Old 08-06-2019, 04:13 PM   #5
Jack Innes
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Default Re: Schrader valve stems

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Originally Posted by Scottio57 View Post
I ordered tubes not long ago that had this very kind of valve stem. They were available everywhere.

Most new production tubes I have used have the brass stem molded into a rubber vulcanizing pad. Outwardly they look like the old style.


It should also be noted that the bridge washer is very important on either style of brass stems. Without it the stem is easily pulled out of the tube in use.


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Old 08-06-2019, 05:52 PM   #6
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Default Re: Schrader valve stems

Some of the metal valve stems I've seen have a larger diameter stems than the hole in the rim/felloe. I guess it depends on what type of wheel a person has. Tire & tube troubles were common back when the Model Ts & As were new cars. Most folks that drove their Fords a lot were good at fixing tires.
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Old 08-07-2019, 07:33 AM   #7
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Default Re: Schrader valve stems

To add to what Jack correctly said the currently available tubes with metal valve stems do not fit Model T wood felloe wheels because the stems are larger in diameter than the hole in the ferrule. If your wheels have been re - wooded in the past ten years or so by Stutzmann they use a large enough piece of tubing (5/8" OD, 1/2" ID) to allow these new, larger metal stems to fit.


These new metal valve stems are not re - usable like originals. They are vulcanized in place. They are not made to be reusable. This is why original metal valve stems are superior. They can be re - used endlessly by purchasing a rubber stem tube, cutting off the rubber stem, and inserting it. It's super easy to do.
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Old 08-07-2019, 08:05 PM   #8
Chris Haynes
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Default Re: Schrader valve stems

I have the stems. I was just hoping to find correct tube that don't require surgery.
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Old 08-08-2019, 10:22 PM   #9
J Franklin
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Default Re: Schrader valve stems

Quote:
Originally Posted by Chris Haynes View Post
I have the stems. I was just hoping to find correct tube that don't require surgery.
I think any tube getting metal stems will require surgery. It is easy, use a sharp razor blade.
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Old 08-09-2019, 10:00 AM   #10
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Default Re: Schrader valve stems

Royce posted some info here;
http://www.mtfca.com/discus/messages/599638/640373.html
This is a pretty good description of how to do it;

http://sheepisland.com/cars/tech/metal_stems/
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Old 08-09-2019, 02:15 PM   #11
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Default Re: Schrader valve stems

As long as you are not the one requiring surgery��
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Old 08-10-2019, 09:14 PM   #12
Royce P
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Default Re: Schrader valve stems

The ones with rubber stems are much like what was available back in the day, except they are made from modern silicone rubber that doesn't take patches well. It takes less than 5 minutes to install a stem. Super easy.




Quote:
Originally Posted by Chris Haynes View Post
I have the stems. I was just hoping to find correct tube that don't require surgery.
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Old 08-11-2019, 09:07 AM   #13
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Default Re: Schrader valve stems

Tubes in the model T time frame were vulcanized natural rubber. After the war, the butyl rubber took over. Now that more tubes are being used for radial tires, they are using later technological formulas to take the heat better. Most are still chlorobutyl elatomers. Elastormers for the inner lining of tires and inner tubes may be using a halogenated isobutylene-co-paramethylstyrene polymer in some applications.

So far, I haven't seen any that use fluorosilicone polymers yet but who knows what is coming from Asia these days. When I go to Harbor Freight stores, I can smell some kind of nasty synthetic rubber smell in most of them.
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