yet another problem....rear stem leak?

[shadowmagic]

So i went to ride to work today and noticed my back tire was low. came back home to air it up and noticed it is leaking from the valve stem somewhere near the tire. Is this normal? I moved the valve stem around a bit and it stopped but is this normal??

[Factor]

It's normal for an old worn out stem that didn't get replaced because the shop didn't have any 90 degree stems in stock. But you need to change it ASAP. This can be done without removing the tire from the bike but big C clamps are involved. Or buy angled stems and BRING them to the shop.

[Jess from VA]

Is this normal?

If that is an OE rubber stem, it's normal as rain.

Those are supposed to be changed with every tire (the stem, not the elbow, but the elbow is part of the safety)

When that doesn't happen, the rubber ages, and way too many guys push the air chuck down on the stem without supporting it with the other hand, and crack it flexing it around.  That and torquey riding.

They have failed traumatically at speed with complete loss of air from tire, and major excitement.

This is why EVERYONE sh!tcans the OE stems and stick in some metal 90* stems which may never need changed.  And don't flex under abuse or torque.

Cheap, but effective. (they come with the tightening nut inside or outside, and outside is better) (some guys keep using the OE elbows with these, I don't know why.)


Best. (billet, and caps with rubber Orings) (these lay right down flat on the wheel) (However, to use these, and orient them to the high side, the T's on the wheel the OE elbows attach to must be cut off.  I cut mine off both bikes, and it's no big deal, no one wants to go back to OE stems.)


https://www.cyclegear.com/gear/bike-master-90-degree-valve-stems

[RonW]

As long as the nut isn't on the inside of the tire (imho).

[The emperor has no clothes]

I’ve had the ones with the nuts on the inside for a total over 100k on 2 bikes. I think they look better. No problems. I understand the apprehension though. Proper lockdown of the 2 nuts is key though.

[shadowmagic]

Thank you all for the answers. I went ahead and rode it to work, 25 minutes 1 way and it did ok. The issue I had the other day with the sputtering is gone. I rerouted the vent hose. I'll get those valves replaced soon, its probably getting close to tire buying time anyway lol Thank you all again.

[Mooskee]

These work great. Myers 90° Tubeless Chrome Valve Stem.
https://www.rockymountainatvmc.com/tires-and-wheels/myers-90%C2%B0-tubeless-chrome-valve-stem-p?s=162103

I recently had the same problem you are having. I had OEM valve stems and one cracked. I ordered the Myers 90°, and was able to change them with the tire on the bike. If you search the forum you will find discussion and pics of doing it.

[jnicks01]

Thank you all for the answers. I went ahead and rode it to work, 25 minutes 1 way and it did ok. The issue I had the other day with the sputtering is gone. I rerouted the vent hose. I'll get those valves replaced soon, its probably getting close to tire buying time anyway lol Thank you all again.

Change them.  25 miles 1 way doing fine is great, until it isn't... and it lets go.  As mentioned, you can easily do it with a C clamp or by making a 2x4/metal rod contraption.  Both methods have plenty of info on this site.  Seeing that it leaks, I'd be more prone to doing this ASAP. 

[Mooskee]

Don't ride on a leaking valve stem. You may die a painful death.

This forum link has all the info you need for changing the stem on the bike. I made a tool for it and am willing to ship it to yo if yo pay the freight both ways. It may be cheaper to make your own or pay to get the stem changed. My tool is heavy. You can order new valve stems and have them in a couple of days. Don't risk riding on leaking ones.

http://www.valkyrieforum.com/bbs/index.php/topic,112384.0.html

The link for buying the valve stem in the forum link is no longer valid. This is the correct link for the Myers 90° Tubeless Chrome Valve Stem.

https://www.rockymountainatvmc.com/tires-and-wheels/myers-90%C2%B0-tubeless-chrome-valve-stem-p?s=162103

[The emperor has no clothes]

Don't ride on a leaking valve stem. You may die a painful death.

This forum link has all the info you need for changing the stem on the bike. I made a tool for it and am willing to ship it to yo if yo pay the freight both ways. It may be cheaper to make your own or pay to get the stem changed. My tool is heavy. You can order new valve stems and have them in a couple of days. Don't risk riding on leaking ones.

http://www.valkyrieforum.com/bbs/index.php/topic,112384.0.html

The link for buying the valve stem in the forum link is no longer valid. This is the correct link for the Myers 90° Tubeless Chrome Valve Stem.

https://www.rockymountainatvmc.com/tires-and-wheels/myers-90%C2%B0-tubeless-chrome-valve-stem-p?s=162103

it’s just not anywhere close to worth the chance. After seeing one give way on the front of another rider while he was passing a truck will make you realize how dangerous it is.

[shadowmagic]

ok, thank you everyone. I will try real hard not ride while I wait for stems 

[F6Dave]

Interestingly, Honda was still using the rubber valve stems on my 2016 F6B.  The full sized Wings had TPMS with a metal stem.

FYI the aluminum stems Jess mentioned also come in colors.