Threaded valve stem on FMB tubular?
04-05-21, 08:24 PM
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Threaded valve stem on FMB tubular?
I received a pair of FMB Paris-Roubaix tubulars from Jos van Veldhoven today. I was a little perplexed by the valve stems. I don't think this is normal. These were apparently unused from a team, so I suspect they were intended for deep aero rims. Do the threaded portions unscrew or something? The top part is what I would expect the valve stems on quality tubulars to look like.
04-05-21, 09:24 PM
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Cool! Tire comes prepared for the popular deep rims but those of us still using shallow rims don't have to live with a huge valve sticking out. I like!
04-06-21, 08:36 AM
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I get that. I will remove the smooth extender and use only the threaded stem. What I don't get is why the base valve stem is externally threaded. It's certainly not needed on a tubular. I'm not used to seeing threaded valve stems on high quality tubular tires. This image is on the FMB website. It looks to me like a smooth valve stem and a not-too-deep rim.
04-06-21, 10:19 AM
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I received a pair of FMB Paris-Roubaix tubulars from Jos van Veldhoven today. I was a little perplexed by the valve stems. I don't think this is normal. These were apparently unused from a team, so I suspect they were intended for deep aero rims. Do the threaded portions unscrew or something? The top part is what I would expect the valve stems on quality tubulars to look like.
04-06-21, 10:54 AM
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All of my FMB PRs (4 pair) are threaded. All of my Dugast Pipistrellos (5 pair) are not threaded.
04-06-21, 02:03 PM
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Thanks all. I guess I won't worry about it and let it chew up my pump's chuck washer...
