Does anyone have any first hand knowledge of a 90ºstem issue? And if so was it a isolated incident and they guessed it to be from inertia, or was it proven to be from inertia. I have read and heard alot of negative things about running a CT on a bike and tire companies don't recommend it at all. But it seems to work OK. I have NO first hand experience with it so I won't tell anyone it is a good or bad thing to do. I do have first hand experience with 90º valve stems including installing them in police bikes and police training bikes. And with NO issues of any kind.

There aren't any issues with the 90 degree stem that I know of. Heck, Harleys have been running a stem out the side of the wheel since forever without any problems. I think the tire would shred from the G forces before the stem on our tubes would ever deflect.

My knowledge is moot, I apologize for pointing what I know out.

Darn, that is the right set up for a bike with 90 degrees according to what I read. Metal and Nut inside.

If you put it on a bike it's a Bike tire, Just that it will cost half as much, last 3 times as long, stop in rain, snow in 1.3rd the distance, and take off on any surface much faster.

Time for me to shut up again. Bye bye.

http://fjriders.com/forum/archive/index.php/t-6169.html

http://www.vfrdiscussion.com/forum/index.php/topic/18933-beware-90-degree-valve-stems/

Mike, have you found a good replacement tire yet? I'm still looking, and I hear good things about some tires, but can't find them on the web we need to get a good link to another MFG soon.. that damage I did to my Comtrac will eventually cause an issue, I just know it will, and of coarse, when I least need it to happen... right?

Sorry MS1700, the 90 degree stems I've always seen are steel. I didn't know there were odd ball ones out there like in your links. I would think they would fail from the stress of just adding air.

texasscott1 wrote:
Sorry MS1700, the 90 degree stems I've always seen are steel. I didn't know there were odd ball ones out there like in your links. I would think they would fail from the stress of just adding air.

Those links are minor, what I read was something from motorcycle tire and wheel manufactures, Long time ago I just remember reading it. It was NEVER run a Rubber 90 degree. If you check into 90 degree valves for motorcycle applications you will see they are quite expensive. The safest are steel and have a nut that secures inside. Aluminum reacts with other metals, deteriorates and fails.

Some motorcycle rims are so cast to almost not allow any installation of other valve stem then what actually goes on them. Mostly your faster bikes where it really makes a difference.

I should really never mention anything I experience here, as it is always questioned, scrutinized, doubted, beyond belief. Yet someone else mentions something, it's gospel truth.

I actually ride my bike, I am a professional driver and have been for over 30 years, I see a lot, I hear a lot. When I am off I ride, a LOT. I just don't cruise the hood, I'm known to drive 600 miles in a truck and hop on the bike and do another 600 in the dark and rain.

Almost always on here, I feel like Rodney Dangerfield.

I need to quit informing people and just ride my own ride. I have nothing to prove. Just want to help others who helped me.

When I recently was told here to seal my intake with Hylomar. I shut up, said ok and went out and found some and used it I didn't say show me the links, prove it to me, where is the data? Anyone have a You Tube video of it working? Look it up for me and post links! None of that. I just said, oh, This dude has more experience than me with that stuff, I researched it myself, and went out and bought some and used it. Good Idea, great stuff.

My record is 30K miles a year on a street bike. I get only about 12.5 K a year now, someone with a crap=load more technical know how and experience than me said if at all possible use a straight valve stem. I was just passing the info on. It's my own stupidity to respond to the questioning. Just like me when I was 1st to post here I was running a car tire, 25K miles ago the naysayers all said It was going to kill me and my insurance company was going to cancel me.

Then Darn posts he is running one, and a hundred people jump on board.

Put a rubber 90 degree n and ride to the local bike night for 50 years, it will most likely work. But if you ride like I do, and some people here know how I ride and through what. You would never take that chance.

I have no idea. Yea that was a vent. True as it is.

Mike go back and read your first post, you really don't refer to rubber stems you refer to all 90º stems and act as if you are gonna crash and burn if you use one and then leave everybody hanging as to why. Now you say that the steel ones with a nut on the inside are Ok. There are different products for different or extreme applications. I think that in the case of a sport bike I would use something made for that app. The one guy in your link says he don't know how long the defective stem was in the bike. I take that as how many years and tire changes was it used. Even on a car you put in new stems on every tire change.
Don't take it so personal when someone has a difference of opinion than you, It will be OK. Multiple opinions and experiences are what makes this a good forum.

I use Dyna Beads too, but Competition Accessories just did a review of RideOn, and it looks like that will be my next dynamic balancing choice.

Jonathan wrote:
I use Dyna Beads too, but Competition Accessories just did a review of RideOn, and it looks like that will be my next dynamic balancing choice.

Well, when the next place goes to change your tires, and you have RideOn in them, you'll get charged for it. Its a mess to work with on the next tire change.

RideOn does exactly what it says it does, but, as my Son-in-law says, they charge and extra $25/per tire for cleanup after the changing for their equipment.

I didn't read much of the reply's. I hope you found the answer you needed.
I'm about to use them but no tube.
there site says they can be used.
Dyna Beads are 100% environmentally friendly ceramic, impervious to moisture, and non-abrasive to inner liners and tubes. No special air drying is needed, and Dyna Beads can be installed directly into the tire at mounting time, or after, through the valve stem.
Ride Safe