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Carbon Fiber Wheel Update

Discussion in 'Norton Motorcycles (Modern)' started by lcrken, Oct 23, 2019.

  1. TonyA

    TonyA

    Joined:
    Jan 16, 2015
    I didn't know that either. It does make sense to me because the swing arm is longer and the bike sits a bit higher . So , maybe the forks needed to be shorter to get the geometry they wanted ? Did you actually measure them ? A couple of inches is a lot . The stationary part of the fork tube and fully extended is 2 inches shorter ?
     
    Last edited: Oct 26, 2019
  2. TonyA

    TonyA

    Joined:
    Jan 16, 2015
    I agree , But when you are more used to the weight it gets easier and you will gain confidence . The XR12 is not a real big bike , it has a heavy powerplant and frame , just like our Norton 961 .
     
  3. lcrken

    lcrken VIP MEMBER

    Joined:
    Mar 15, 2009
    Riding update. I managed a ride today before the high winds expected this afternoon, and got 50 miles or so of mostly bumpy, twisty road. I can now say with confidence that the lighter wheels do make a noticeable difference. The bike feels significantly easier to turn into the corners, and much more willing to change line quickly. It also seems to be a little more neutral in corners, without as much tendency to push under power. I didn't really notice a lot of difference in the bumps, but I think it does react a little less to the really harsh ones. It's difficult to tell all the differences without doing back-to-back tests, and I'm not willing to swap wheels back and forth to do that. I will try some damping changes when I get a chance. I don't know how much the lighter wheels will affect the setup, if any, but it will be entertaining to find out.

    Ken
     
  4. Voodooo

    Voodooo VIP MEMBER

    Joined:
    Aug 10, 2016
    The benefits of the carbon wheels are impressive. Your acceleration will be better and your braking distance will be reduced. My car (2018 GT350R Shelby Mustang) came factory fitted with carbon fiber wheels and I once put a set of my spare Forgeline billet aluminum wheels of the same size on to see if I noticed any difference between the two and it’s amazing how the response is with the carbon wheels. On my car they are 11”x19” front with a 305-30-19 tire and 11.5”x19” rear with a 315-30-19 tire. The carbon wheels compared to the aluminum wheels and same size tire is 15.2 pounds weight reduction for each wheel / tire. So a total of 60.6 pounds of weight loss with just the carbon wheels.
    You’re really making me want to get the BST wheels for my Dominator.
     
  5. lcrken

    lcrken VIP MEMBER

    Joined:
    Mar 15, 2009
    They are seductive. Did I mention how good looking they are too?

    Ken
     
    Voodooo likes this.
  6. ntst8

    ntst8 VIP MEMBER

    Joined:
    Feb 14, 2004
    How delicate are they for tyre changes?
     
  7. lcrken

    lcrken VIP MEMBER

    Joined:
    Mar 15, 2009
    Good question. I worried about that. I used plastic rim protectors, smooth irons, and plenty of tire lube, and was VERY careful. I didn't see any signs of damage in the process. I don't think I would trust them to any of the local bike shops, unless I knew the person mounting them.

    Ken
     
  8. ntst8

    ntst8 VIP MEMBER

    Joined:
    Feb 14, 2004
    Sounds good. I was wondering whether they might need a car type changer where nothing touches the rim.
    Apart from the bling tubeless tyres would be nice. Not in my price range at the moment sadly.
     
  9. lcrken

    lcrken VIP MEMBER

    Joined:
    Mar 15, 2009
    I had the same sort of thought before buying the CF wheels. I'm pretty sure I could have found some appropriate size, modern, lightweight, cast wheels that could be adapted to the 961. But I succumbed to the lure of the CF wheels, partly because they are still significantly lighter than any of the cast wheels. I think they are also more at risk of catastrophic failure in an impact, like with a curb, than the cast wheels, but that seems pretty low risk to me. In either case, I really appreciate their ability to hold air pressure better than tube tires.

    Ken
     
  10. worntorn

    worntorn

    Joined:
    Dec 22, 2006
    If you want an inexpensive upgrade that gets rid of the tubes, Outex makes a kit for sealing conventional spoked wheels.
    I've got one here for the Thruxton and will install on the next tire change.
    It won't reduce the weight like Ken's CF wheels but it will rid you of the tube problems and tube weight while keeping the look of conventional spoked wheels.
    $140 or so for both wheels
    A friend has already done this, great result, only 2 psi leakage in four months of winter storage. The tubes leaked more than that.

    Glen
     
    MxMartin and BLIGHTYBRIT/SF like this.
  11. ntst8

    ntst8 VIP MEMBER

    Joined:
    Feb 14, 2004
    Thanks Glen, interesting stuff.
    I am not so worried about weight, just that a roadside plug is much easier to fit than patching a tube on the 961.
     
    worntorn likes this.

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