Valve stem support?

[DGS65]

I have owned many motorcycles over the years but this is the first one that had valve stems with a 90 degree angle.  The other day while checking the tire pressure the little clip that looks like it is there to support the stem broke off.  Being I have never seem this before I have no idea where to find such a thing or even what it would be called.  It is not affecting function of the bike other then when I check the tire pressure.  I can't imagine this piece being more then a few dollars I just need so advise as to where to buy it.

Thanks in advance I'm sure someone will know what I'm talking about.

[Thespian]

https://www.partzilla.com/catalog/honda/motorcycle/1999/gl1500c-ac-valkyrie/rear-wheel
If you have replaced the stem with a metal one you should not need it. OEM was soft rubber stem

[N8171S]

Don’t ride the bike at high speed without the support.  The rubber stems can break.  Get rid of those stems and replace with metal ones. 

[The emperor has no clothes]

Don’t ride the bike at high speed without the support.  The rubber stems can break.  Get rid of those stems and replace with metal ones. 

Personally, I wouldn’t ride at any speed without the support on there. The metal valve stems are the only way to go in my opinion.

[DGS65]

I'm assuming I have to pull the tires to change the stems?
I will see if I can find the supports someplace local.
I'm going on vacation soon so I don't expect to do much riding before I return which will give me some time to hunt done the part.

Thanks for the input

[Pete]

Do not remove the tire. just get a 8/10 inch c clamp and a block of wood, let the air out and clamp the tire bead to the left and replace the stem.

[Jess from VA]

The support elbows are a workaround for chronically failing rubber stems.

They mostly fail from age and people punching on air gauges and air chucks without using the other hand to support the stem.  The stems crack at the wheel, with or without the elbows.  Even adding both new stems and elbows at every tire change is no guarantee of a safe valve stem.

A good number of folks have had traumatic failures with the stem blowing out of the wheel and immediate air loss.  

Friends don't let friends continue to use the Valk valve stems.

Buy some metal stems and make your bike safe.

There are dozens of threads on here with the recommended stems.

They can be changed with the tire on the wheel with one or two big C clamps.

[hubcapsc]

The thing you seek is a HOLDER, RIM VALVE - 42754-MN5-000 - $3.61

Your dealer can get one, or you can order one online, just google
that part number to find places that want to sell it to you...

I typed in the partzilla price, they say they have it in stock.

-Mike

[Oss]

As someone who has had a front tire valve stem fail at 65 mph speed I can tell you

CHANGE TO METAL STEMS before your next ride

Oss

sorry about the yelling, my blood pressure goes up wondering how I held it together to stop safely

[Mean Cat]

METAL VALVE STEMS ONLY BE SAFE https://www.jpcycles.com/product/164-338/show-chrome-accessories-90-nickel-valve-stem?mrkgcl=444&mrkgadid=1330272401&utm_source=google&utm_medium=cpc&utm_term=75903095050product_type_l1vehicles_%26_parts%26product_type_l2land_vehicles%26product_type_l3mot&utm_campaign=PLA+-+Shopping+Campaign&product_id=164-338&utm_content=pla&adpos=1o2&creative=42616826650&device=c&matchtype=&network=g&gclid=EAIaIQobChMI36Pmxpnr2wIVA7bACh24xw17EAQYAiABEgKH7vD_BwE

[DGS65]

I just ordered the holders and when I get a chance I will replace the stems I don't think the are more than a year old when the tires were changed, They look new surprise they didn't replace with metal ones but I wasn't there so I don't know for sure.

[..]

I just ordered the holders and when I get a chance I will replace the stems I don't think the are more than a year old when the tires were changed, They look new surprise they didn't replace with metal ones but I wasn't there so I don't know for sure.

Were you charged for new ones when the tires were changed? Do they show on your bill?

If not, they did not replace them.

[97BLKVALK]

I just ordered the holders and when I get a chance I will replace the stems I don't think the are more than a year old when the tires were changed, They look new surprise they didn't replace with metal ones but I wasn't there so I don't know for sure.

Were you charged for new ones when the tires were changed? Do they show on your bill?

If not, they did not replace them.

 

[DGS65]

I just ordered the holders and when I get a chance I will replace the stems I don't think the are more than a year old when the tires were changed, They look new surprise they didn't replace with metal ones but I wasn't there so I don't know for sure.

Were you charged for new ones when the tires were changed? Do they show on your bill?

If not, they did not replace them.

Lol I didn't own the bike at the time my former business partner did.
This said I just check and the stems have clearly been replace with new metal or aluminum stems.  Do these still need the supports to be safe or is it OK to ride without them at least until they get here I have already ordered them either way.

[The emperor has no clothes]

The OEM ones are rubber and metal. They should be replaced in my opinion. With something like this.
http://patchboy.com/mm5/merchant.mvc?Screen=PROD&Store_Code=P&Product_Code=17-562&Category_Code=6-3

[Pete]

I just ordered the holders and when I get a chance I will replace the stems I don't think the are more than a year old when the tires were changed, They look new surprise they didn't replace with metal ones but I wasn't there so I don't know for sure.

Were you charged for new ones when the tires were changed? Do they show on your bill?

If not, they did not replace them.

Lol I didn't own the bike at the time my former business partner did.
This said I just check and the stems have clearly been replace with new metal or aluminum stems.  Do these still need the supports to be safe or is it OK to ride without them at least until they get here I have already ordered them either way.

Yes I would still install the supports as it take strain off the rubber washer used on the all metal stems.

[F6Dave]

To my surprise, my 2016 F6B still came with the same old rubber/metal valve stems and plastic supports.  I'm sure they're safe if changed from time to time, but I'll be switching to the metal stems at my first tire replacement.  I had one of the Honda stems develop a slow leak 300 miles from home on my '99 Interstate.  That ruined what had been a nice trip.

[The emperor has no clothes]

I just ordered the holders and when I get a chance I will replace the stems I don't think the are more than a year old when the tires were changed, They look new surprise they didn't replace with metal ones but I wasn't there so I don't know for sure.

Were you charged for new ones when the tires were changed? Do they show on your bill?

If not, they did not replace them.

Lol I didn't own the bike at the time my former business partner did.
This said I just check and the stems have clearly been replace with new metal or aluminum stems.  Do these still need the supports to be safe or is it OK to ride without them at least until they get here I have already ordered them either way.

Yes I would still install the supports as it take strain off the rubber washer used on the all metal stems.

Maybe I’ve got mine tightened down too tight. But they have no detectable movement.

[Pete]

I just ordered the holders and when I get a chance I will replace the stems I don't think the are more than a year old when the tires were changed, They look new surprise they didn't replace with metal ones but I wasn't there so I don't know for sure.

Were you charged for new ones when the tires were changed? Do they show on your bill?

If not, they did not replace them.

Lol I didn't own the bike at the time my former business partner did.
This said I just check and the stems have clearly been replace with new metal or aluminum stems.  Do these still need the supports to be safe or is it OK to ride without them at least until they get here I have already ordered them either way.

Yes I would still install the supports as it take strain off the rubber washer used on the all metal stems.

Maybe I’ve got mine tightened down too tight. But they have no detectable movement.

Could be, the seal on the inside of the rim has the pressure of the nut and seal on the outside and the pressure of the air inside to seal. The air pressure should be enough to effect the seal, of course if no air the nut retains and seals, so both are necessary. Snug should be tight enough to seal with no air, my guess is that over tightening (compression) may shorten the life of the seal. The seals are not crush washers so over tightening may hasten splitting and cracks, but if you are replacing them with every tire change, probably does not cause an issue.

The strain I was referring to was when filling/checking air and at extreme high speeds when the force on the valve is most likely to cause movement and the Honda piece would serve to minimize movement in both cases.

The nut is also the retainer for the outside seal.
I would not loosen after over tightening as it may induce a slow leak.

[Willow]

I just ordered the holders and when I get a chance I will replace the stems I don't think the are more than a year old when the tires were changed, They look new surprise they didn't replace with metal ones but I wasn't there so I don't know for sure.

Were you charged for new ones when the tires were changed? Do they show on your bill?

If not, they did not replace them.

Lol I didn't own the bike at the time my former business partner did.
This said I just check and the stems have clearly been replace with new metal or aluminum stems.  Do these still need the supports to be safe or is it OK to ride without them at least until they get here I have already ordered them either way.

Yes I would still install the supports as it take strain off the rubber washer used on the all metal stems.

That's a very far reach.  I don't believe you could support that with any evidence otherwise.  Everyone I know running all metal are without the supports.

[Bighead]

No support on mine. I hqve the ones with a nut on either side....zero play...a support would be for looks..

[Pete]

I just ordered the holders and when I get a chance I will replace the stems I don't think the are more than a year old when the tires were changed, They look new surprise they didn't replace with metal ones but I wasn't there so I don't know for sure.

Were you charged for new ones when the tires were changed? Do they show on your bill?

If not, they did not replace them.

Lol I didn't own the bike at the time my former business partner did.
This said I just check and the stems have clearly been replace with new metal or aluminum stems.  Do these still need the supports to be safe or is it OK to ride without them at least until they get here I have already ordered them either way.

Yes I would still install the supports as it take strain off the rubber washer used on the all metal stems.

That's a very far reach.  I don't believe you could support that with any evidence otherwise.  Everyone I know running all metal are without the supports.

No rubber gasketed connection is ever totally free from some movement. Especially when it has a rubber gasket on both sides. It is a physic's thing, does that help?

The key words in the sentence were "I would", and I did, everyone should do as they please, I have NO problem with that. 

[Pete]

No support on mine. I have the ones with a nut on either side....zero play...a support would be for looks..

Yes in my opinion the support looks better than the bare support stud.
Zero play? If using pliable seal(s), not according to your physics teacher.

You bike, you choice.  as always.

[RonW]

I have the 90° stems, nut on the outside. I reuse the supports, what else would I do with them anyways if I didn't put them back on the wheel?

[Willow]

I just ordered the holders and when I get a chance I will replace the stems I don't think the are more than a year old when the tires were changed, They look new surprise they didn't replace with metal ones but I wasn't there so I don't know for sure.

Were you charged for new ones when the tires were changed? Do they show on your bill?

If not, they did not replace them.

Lol I didn't own the bike at the time my former business partner did.
This said I just check and the stems have clearly been replace with new metal or aluminum stems.  Do these still need the supports to be safe or is it OK to ride without them at least until they get here I have already ordered them either way.

Yes I would still install the supports as it take strain off the rubber washer used on the all metal stems.

That's a very far reach.  I don't believe you could support that with any evidence otherwise.  Everyone I know running all metal are without the supports.

No rubber gasketed connection is ever totally free from some movement. Especially when it has a rubber gasket on both sides. It is a physic's thing, does that help?

The key words in the sentence were "I would", and I did, everyone should do as they please, I have NO problem with that. 

I don't mean to beat this into the ground, well perhaps enough so no one is misled.

The difference between OEM and the Patchboy stems which I use is the that full metal stem is one metal tube from end to end.  The rubber is only a gasket.  The OEM support wouldn't hold the stem tightly enough to avoid whatever tiny movement would result from compressing a properly snugged gasket.

Even misapplied physics has no apostrophe.

I have no problem with one's choosing to do what one wishes with one's own bike and stems.  I have a problem with one encouraging others to do something that makes no sense. 

[Pete]

I just ordered the holders and when I get a chance I will replace the stems I don't think the are more than a year old when the tires were changed, They look new surprise they didn't replace with metal ones but I wasn't there so I don't know for sure.

Were you charged for new ones when the tires were changed? Do they show on your bill?

If not, they did not replace them.

Lol I didn't own the bike at the time my former business partner did.
This said I just check and the stems have clearly been replace with new metal or aluminum stems.  Do these still need the supports to be safe or is it OK to ride without them at least until they get here I have already ordered them either way.

Yes I would still install the supports as it take strain off the rubber washer used on the all metal stems.

That's a very far reach.  I don't believe you could support that with any evidence otherwise.  Everyone I know running all metal are without the supports.

No rubber gasketed connection is ever totally free from some movement. Especially when it has a rubber gasket on both sides. It is a physic's thing, does that help?

The key words in the sentence were "I would", and I did, everyone should do as they please, I have NO problem with that. 

I don't mean to beat this into the ground, well perhaps enough so no one is misled.

The difference between OEM and the Patchboy stems which I use is the that full metal stem is one metal tube from end to end.  The rubber is only a gasket.  The OEM support wouldn't hold the stem tightly enough to avoid whatever tiny movement would result from compressing a properly snugged gasket.

Even misapplied physics has no apostrophe.

I have no problem with one's choosing to do what one wishes with one's own bike and stems.  I have a problem with one encouraging others to do something that makes no sense. 

We are not using the same stems (Jake Marshall),  but mine are also 1 metal piece with 2 gaskets and 1 nut. Although that may not matter for this discussion.

Physic's  says that a flexible gasket will migrate from pressure when over compressed and flexible gaskets can split and/or leak from excessive pressure.

Even when crushing the gaskets (which you should not do) movement of the stem DOES occur if some force is applied. Does it touch the support, depends on the force, the gasket(s) and the torque.

Minor clarification of your statement below.
"I have a problem with one encouraging others to do something that makes no sense TO ME."

I do not see how stating what I do and why is encouraging, actually it is fact. 
Just as what you do is fact. Are you encouraging them to leave the support off so the ugly support stud can be seen.  I really doubt it but your logic could be extended there.

We disagree, so what, adding the support does no harm and looks better (according to some). Let the owner choose.

We are taking this way to serious - I have had my say and I stand by it. As far as I am concerned your response to this response will end it.

Thanks Pete

[Jess from VA]

I use these, and cut the ugly support studs off.  (They lay flat on the wheel, and to aim them to the right/high side of the bike,  you must cut them off or they won't fit in the wheel)

I won't be worrying about any flexion, for 25 years or so.  





Couldn't find a Valk/Wing mount pic.

[Bighead]

Flex That

[Pete]

Nice looking units, first I have seen of them.

Expecting 25 year life, great but you may want to consider replacing the core occasionally, if it has a soft seal.

From the picture it appears to be metal to metal contact when mounting to the wheel?
Is the nut a self locking, nylock or just plain thread?
Inquiring minds would like to know, thanks.

[Jess from VA]

There's a gasket in there (just not visible in the pic).

Not sure of the self locking thing.

Here is a link to the mfr.  

(Note, the same stems appear to be for sale for cheaper many other places. The way to tell is to look at the stamp on the side of the Motorcycle Anchor stem, then see if the same stamp is on the add for the cheaper stem.) (some are letters and some numbers, maybe year) (I just bought from the Mfgr)

Best stems bar none.  (I may change a Shrader, if it needs changing.  The aluminum caps also have Orings inside.)

Scroll down to see note for 1988-2000 Honda GL1500 GoldWing, and same deal/wheels for all Valks.

http://www.motorcycleanchor.com/tire_valves/

Or maybe:  https://www.revzilla.com/motorcycle/bike-master-90-degree-valve-stems

                  https://www.jpcycles.com/product/922-721/bikemaster-silver-11-3mm-angled-aluminum-valve-stem

                  

[Pete]

Great info, thanks for posting it.

The first site says it has anti vibration sealant applied to the threads.
Nut torque to 7.2 lb-ft. DO NOT OVERTORQUE!
It also says the EPDM seal has a life minimum of 10 years.
Site suggests Shrader valve replacement after a decade, if it leaks.

Appears these folks have a superior product, worth looking at.

[Jess from VA]

Appears these folks have a superior product. 

I thought so, and got them for both bikes.

Tires (wheels/stems) are only the single most important safety feature on any motorcycle, so $30 a pair didn't put me off.

No more kneeling down to make sure you hold the back of the stem punching on air or gauge either.  They are rock solid.  (The valves and metal caps are very finely threaded, so care must be exercised not to cross thread. Unlike plastic caps.)   

[F6Dave]

Those aluminum valve stems are also available in colors.  Here is a red one I used on my old F6B.  They are available from HDL and others for about $4 each.  I think they are sourced from K&L.

[slythern12]

METAL VALVE STEMS ONLY BE SAFE https://www.jpcycles.com/product/164-338/show-chrome-accessories-90-nickel-valve-stem?mrkgcl=444&mrkgadid=1330272401&utm_source=google&utm_medium=cpc&utm_term=75903095050product_type_l1vehicles_%26_parts%26product_type_l2land_vehicles%26product_type_l3mot&utm_campaign=PLA+-+Shopping+Campaign&product_id=164-338&utm_content=pla&adpos=1o2&creative=42616826650&device=c&matchtype=&network=g&gclid=EAIaIQobChMI36Pmxpnr2wIVA7bACh24xw17EAQYAiABEgKH7vD_BwE

According to JP Cycles these don't fit our Valkyries. I hope they do because I ordered a set from Amazon and it says fits GL1500 before I saw what JP Cycles says.

[Paladin528]

you have to grind off the little "T" that the holder snaps on to.
This is why I went with the other ones.  I ALWAYS leave a path back to stock

[Jess from VA]

you have to grind off the little "T" that the holder snaps on to.
This is why I went with the other ones.  I ALWAYS leave a path back to stock

You do not have to grind off the Ts if you orient those stems (point them) to the left-low side (they essentially lay flat on the rims).  No big deal on the front, but a big PITA with tourers and interstates in the back (where, unless you get the tire/stem just right to work from the back, you have to lay flat on your belly under the low side bag to get to the stem).

But, there is absolutely no reason to ever return to stock in getting rid of that designed to fail system with rubber stems and elbows.  Mine are cut off, and I would never go back to stock, and if I sell, neither can the new owner (and I've done him a big favor).  

[DGS65]

Sadly I bought two of the supports and they were delivered very quickly this said I was away when they were delivered and now I can't find where my wife put them so it looks like I will be placing the order again.  I'm very glad these are cheap parts!!!

[MarkT]

Nice looking stems Jess.  I bought a load of 90° and 45° all metal stems from Jake Wilson a while back and still have several on hand.  When I had my wheels powder coated right before Inzane I forgot to cut off the T's which I haven't used in years.  Now I don't want to cut them off unless I get some touchup paint in the same color.  I NEARLY always leave a path back to stock with my mods but there are sometimes exceptions depending on the situation.

[Dr K]

DGS65  somebody needs a spanking 

[Bighead]

Sadly I bought two of the supports and they were delivered very quickly this said I was away when they were delivered and now I can't find where my wife put them so it looks like I will be placing the order again.  I'm very glad these are cheap parts!!!

Dont order any more of those order the metal ones posted above...