picked up these schrader valve stem caps for $1 each to put on my T. Problem is, I have model valve stems and these are too large to accommodate. Could I sneak by and glue a modern cap inside and screw it on? or am I missing something? thanks!
Check Coker,I think they sell an adapter to fit on rubber stem so you can use those. I may be dreaming,but I thought so.
The bottom nut screws on an original Model T metal valve stem.
You can find original valve stems at swap meets like the ones below. Cut the rubber stem off a modern tube and use original stems. Then your covers will work great and the stem will never fall apart either.
I would also like to get some vintage style caps like Brian has. Thanks for the picture Royce. Sorry but, I just don't get how these seal up a modern tube. I'm not sure if it is possible to explain it better. Here is a diagram from the Macs catalog if that helps anyone.
Please disregard. I think I figured it out. Thanks.
Please see here for a how-to:
Thanks John. That helps.
Don't use any of the valve stems or parts from the vendors. They are all wrong. Go along with what Royce suggested. I've been doing this for years, and it works perfectly. If you have an early T, I suggest you use the knurled dust cover.
Or you could abandon this type of dust cover [not valve cap] and search out a set of Dill brand covers with the internal sliding thread. These will fit even rubber stemmed tubes without any modification at all. They are a true valve cap, in that they seal the valve. Most have the valve the valve removal tool on the end as a bonus.
Allan from down under.
I have a number of Schrader and Dill dust caps, and some Bridgeports too. They are all interchangeable.
Larry, how do you define interchangeable? In my experience, Schraeder dust caps will not go on a rubber stemmed tube. They need a threaded metal stem onto which the mounting nut is first screwed. Then the dust cap screws onto it.
The Dill caps I have need no metal stem. The sliding insert screws onto the valve cap thread even on a modern tube, and then the cover slides down to hide the valve stem. The Dill cap will fit all valve stems. The schraeder type only go on threaded metal stems.
I wish I could post photos. I have a couple of new old stock sets of 5 Dill caps in the original cardboard packs. These came from a display stand which still had 15 of a total 20 sets in situ. I should have bought the lot.
Allan from down under.
Read Royces comments.