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Discussion 90° Valve Stems

Discussion in 'Tyres Wheels and Brakes' started by GreyImport, Apr 4, 2018.

  1. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Last edited: Apr 4, 2018
  2. kiffsta

    kiffsta Senior Member

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    Yep, I usually fit them to my bikes
     
  3. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Yea I may invest in a new set of tyres for the Texas derby so a good time to fit these ... and the old tyres can go on Project X

    Did u just use the ebay ones?
     
  4. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    The first set you linked are the 9mm one's for dirtbike's, second set are 11.3mm for road bike's and car's
    The 3rd set look like they'll suit road bike's and car's too, but being brass may be enough to throw off the balance a little

    You can also get stealth valve's which sit almost flush with the rim, but the adapter you use to pump them up with is straight so will have your original problem still
    https://www.ebay.com.au/itm/Stealth...236182?hash=item2384a49dd6:g:qY8AAOSwaEhZGX88

    s-l500.jpg

    s-l1600.jpg
     
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    Last edited: Apr 4, 2018
  5. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    I bought some but the threaded section is so short that the nut barely screws on. Decided to pass and will use the usual jobbies.

    Oops must read @my67xr comments first. Seems I might have bought the wrong ones. Well they look like the first set that Mr Grey posted. They fit in the hole but are too short. The ones in the second picture look longer.
     
    Last edited: Apr 4, 2018
  6. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    I have used the SD-R branded ones on eBay, no dramas.
     
  7. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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  8. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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  9. brets99au

    brets99au Active Member

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  10. minimac

    minimac Active Member Premium Member Contributing Member

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    I bought some metal ones off of a china site. I hesitated to use them because the part to fill them(valve stem) was short. After experiencing a failure due to the long neck on the one I was using, I changed them. They work fine. They were cheap enough to order a dozen, so I change them out with each tire change.
    https://www.banggood.com/
     
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  11. Murdo

    Murdo The Good Doctor Staff Member Contributing Member Ride and Events Crew

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  12. kiffsta

    kiffsta Senior Member

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    If you are struggeling to get a connection on a reg valve, try going through a hole in the brake disk, works a treat for me
     
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  13. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    As I have a few bikes of course , 3 trailers , the 4WD plus airbags , a jockey wheel , a trolley and a wheel barrow that all need air , a compressor at home is a must
     
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  14. Bab

    Bab Well-Known Member

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    I have read accounts of riders who had used the 90deg. / add to the stock valve. They complained the added weight and imbalance of the add on introduced stresses that weakened the stock valve to the point the rubber cracked and the valve failed. My answer was to purchase an air chuck with the flexible hose at the delivery end. The chuck actually clamps onto the valve, and the air is introduced with the trigger in the handle behind the built in gauge.
     
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  15. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    I'd only use the 90 degree adapter's to pump up the tyre, then unscrew it and refit the cap to the valve
     
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  16. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    Since my aluminium ones are useless, I was just going to fit the rubber jobbies. Then the tyre shop did not have any the right size so had to use these. At least the tyres are on now.
    Valve.jpg
     
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  17. ruckusman

    ruckusman White Mans Magic Master Premium Member Dirty Wheel Club

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    The only thing I could think of when looking at those 90 degree adapters is what happens if one comes loose and you get rapid deflation at speed.

    I've had half a dozen tyres lose pressure and fortunately not gone down, but they were still partially pressurised
     
  18. Murdo

    Murdo The Good Doctor Staff Member Contributing Member Ride and Events Crew

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    You don't leave the screw on adaptors on the tyre, they will unbalance the wheel and may (as you said) deflate the tyre. I carry one in bag and only use then put back in bag.
     
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  19. ruckusman

    ruckusman White Mans Magic Master Premium Member Dirty Wheel Club

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    Yeah I understood that - I was referring to the screwed together permanent right angle adapters
     
  20. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    I guess you could alway's use a dab of Loctite
     
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