Aftermarket 90* valve stems


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DenverWinger
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Aftermarket 90* valve stems

Post by DenverWinger » Tue Oct 10, 2017 8:01 am



A few months ago I replaced rear tire with a Dunlop E4. Removed the wheel and took it down to the local dealer for mount and balance.
The dealer recommended installing one of these, I thought it a good idea.


Dealer asked me what pressure I wanted in the tire, told him 44 lbs.
I reinstalled the wheel and let the bike down from the lift onto a totally flat tire! Needless to say I wasn't very happy.
Back into the air and removed the wheel again, it was after hours but intended to stop by the dealer with the wheel next day on my way home from work, angry that it wasn't checked for leaks.
In the mean time I aired up the tire and started checking the bead for leaks with soapy water. Nothing.
Soapy water on the new valve stem rewarded me with a wonderful display of bubbles. I tightened the nut on the valve stem until the leaking stopped. Problem solved.
Wheel back on the bike, and a few days later find the tire has gone soft again. More bubbles at the stem. I've re-tightened the valve stem nut several times now.

What's people's experience with these? Does the rubber grommet on the inside just crush more and more and start leaking? Does the nut tend to back off all by itself?
I'm tempted to put some Loctite on it, but thought I'd ask around first......


They say 98% of all Hardleys ever made are still on the road..... The other 2% made it home. :lol:
(I stole this from somebody on another GW site...) :roll:

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Rayvn
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1980 Honda cx500 turbo..."for sale" My latest bike is a 1994 GL1500SE, side car rig.

Re: Aftermarket 90* valve stems

Post by Rayvn » Tue Oct 10, 2017 9:58 am

DenverWinger wrote:
Tue Oct 10, 2017 8:01 am
A few months ago I replaced rear tire with a Dunlop E4. Removed the wheel and took it down to the local dealer for mount and balance.
The dealer recommended installing one of these, I thought it a good idea.
valvestem.JPG
Dealer asked me what pressure I wanted in the tire, told him 44 lbs.
I reinstalled the wheel and let the bike down from the lift onto a totally flat tire! Needless to say I wasn't very happy.
Back into the air and removed the wheel again, it was after hours but intended to stop by the dealer with the wheel next day on my way home from work, angry that it wasn't checked for leaks.
In the mean time I aired up the tire and started checking the bead for leaks with soapy water. Nothing.
Soapy water on the new valve stem rewarded me with a wonderful display of bubbles. I tightened the nut on the valve stem until the leaking stopped. Problem solved.
Wheel back on the bike, and a few days later find the tire has gone soft again. More bubbles at the stem. I've re-tightened the valve stem nut several times now.

What's people's experience with these? Does the rubber grommet on the inside just crush more and more and start leaking? Does the nut tend to back off all by itself?
I'm tempted to put some Loctite on it, but thought I'd ask around first......
I have heard of other people complaining about that particular brand leaking so you are not alone. I have used this brand...... http://wingstuff.com/products/26903-chr ... m_search=1 on several wings i have had and no leaking problems. Just my experience, ymmv :-)
Lang may your lum reek

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minimac
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Re: Aftermarket 90* valve stems

Post by minimac » Tue Oct 10, 2017 8:36 pm

I've replaced my own valve stems with aftermarket 90* ones on my 'Wing and three of my scooters. I've never had an issue with any of them. My guess is that the shop never checked them. If you're worried about the nut loosening (I've never heard of it happening), loctite certainly won't hurt anything.

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dingdong
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Re: Aftermarket 90* valve stems

Post by dingdong » Wed Oct 11, 2017 7:22 am

I installed a set of those a couple of years ago. It seems the metal (Some sort of brass) was so soft that just tightening the nut to compress the rubber seals stripped the threads. Cheap C*%$#* crap. ygwypf.
Tom

A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

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DenverWinger
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Location: Denver, CO
Motorcycle: 1972 CL-350 (1980-1988) sold
1978 Suzuki GS-550 (1985-2005) sold
1977 GL-1000 (2002-2006) sold
1980 GL-1100 STD Vetter (2005-)
1993 GL-1500A Aspencade (2017-)
1983 Trav-Lite Camper (2010-)

Re: Aftermarket 90* valve stems

Post by DenverWinger » Wed Oct 11, 2017 9:09 am

Wow, Brass?

These look like stainless steel, they were whatever stock the dealer had on hand so I don't know the brand, I just used the Cyclemax picture as mine are just like it.
They say 98% of all Hardleys ever made are still on the road..... The other 2% made it home. :lol:
(I stole this from somebody on another GW site...) :roll:

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Rayvn
Posts: 48
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Location: Washington state north of Vanc.
Motorcycle: 2002 GL1800, 2000 Kawasaki w650, 2010 Yamaha xt250, 1994 Yamaha TW200, 1972 Honda ct-90 dual range tranny, 1968 Honda Express 102 original miles, 1982 Honda cx500 custom, 1972 Bultaco Alpina,
1980 Honda cx500 turbo..."for sale" My latest bike is a 1994 GL1500SE, side car rig.

Re: Aftermarket 90* valve stems

Post by Rayvn » Wed Oct 11, 2017 12:39 pm

dingdong wrote:
Wed Oct 11, 2017 7:22 am
I installed a set of those a couple of years ago. It seems the metal (Some sort of brass) was so soft that just tightening the nut to compress the rubber seals stripped the threads. Cheap C*%$#* crap. ygwypf.
Which ones are you talking about ? The ones he posted about or the ones I gave a link to ? I have never had a problem with the ones I have been using. On my last three wings. and will be going on my new to me rig when it needs tires.
Lang may your lum reek

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dingdong
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Re: Aftermarket 90* valve stems

Post by dingdong » Wed Oct 11, 2017 3:03 pm

I mean the stems that Denverwinger referred to. Chrome plated soft brass.
Tom

A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

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Rayvn
Posts: 48
Joined: Wed Mar 02, 2016 11:52 pm
Location: Washington state north of Vanc.
Motorcycle: 2002 GL1800, 2000 Kawasaki w650, 2010 Yamaha xt250, 1994 Yamaha TW200, 1972 Honda ct-90 dual range tranny, 1968 Honda Express 102 original miles, 1982 Honda cx500 custom, 1972 Bultaco Alpina,
1980 Honda cx500 turbo..."for sale" My latest bike is a 1994 GL1500SE, side car rig.

Re: Aftermarket 90* valve stems

Post by Rayvn » Wed Oct 11, 2017 5:32 pm

dingdong wrote:
Wed Oct 11, 2017 3:03 pm
I mean the stems that Denverwinger referred to. Chrome plated soft brass.
Ok, thanks. Was just wondering if they changed something with the ones I have been using. :-)
Lang may your lum reek

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WingAdmin
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Re: Aftermarket 90* valve stems

Post by WingAdmin » Wed Oct 11, 2017 7:17 pm

I've been using them for years as well, with no leaks or problems.

Scooters
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Re: Aftermarket 90* valve stems

Post by Scooters » Wed Oct 18, 2017 6:11 pm

I had the 90 degree stem installed- cyclemax I think was the brand.
$13/pair; 20 to install and balance.
No problem two + months now.

The rubber 90 stem failed and I rode about 10 miles to work on a flat front tire.
A little squirrely I'll tell ya.

Only had bike 2 months (93 SE) at the time.
Filled w air and she held enough for 16 miles till I got her home.



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