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Who Straightens Bent Borranis or Akronts?

Discussion in 'Norton Commando Motorcycles (Classic)' started by xbacksideslider, Aug 3, 2018.

  1. xbacksideslider

    xbacksideslider VIP MEMBER

    Joined:
    Aug 19, 2010
    I made the mistake of looking in my mirror for my friends and not watching the road . . . . with this result - see pic below.

    I obtained a new, imitation/Chinese rim in 2.5 x 19 at a great price but I have second thoughts. I really do want to keep/repair my bent 2.15 x 19 Borrani; it matches my rear rim and it's lighter than the Chinese knock off.

    I've found several places that straighten cast MC wheels using automotive rim repair tooling. Those machines don't work for wire wheels because they hold the wheel, and apply fulcrum force, across the wheel bearings/axle and on through the robust cast spokes. Can't do that with wire spokes.

    I have also communicated with some other places, including Buchannan's here in SoCal, and they all are tentative to pessimistic about being able to straighten this rim. They do allow that if they can't do it, then they can sell me a new authentic re-pop Borrani rim/rebuild . . . .

    I have heard of straightening valenced (or flanged) aluminum rims by making hard wood patterns in the shape of the wheel's arc and then using the two patterns to straighten the wheel by press/heavy hammer.

    Instead of me making patterns, maybe someone else already has some, or even does it commercially?
     

    Attached Files:

  2. lazyeye6

    lazyeye6 VIP MEMBER

    Joined:
    Feb 28, 2014
    Quit looking for the easy way out and buy a new rim..
     
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  3. tyborg15

    tyborg15

    Joined:
    Dec 24, 2012
    You’ll know youve made the wrong decision when it fractures at 100 km/h (62 mph).
     
    JimC likes this.
  4. CanukNortonNut

    CanukNortonNut

    Joined:
    Aug 8, 2005
    You still running Super Venom tires on your bike?:eek: They got to be over ten years old.
     
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  5. robs ss

    robs ss VIP MEMBER

    Joined:
    Aug 16, 2016
    I believe that once you've damaged aluminium that badly that straightening it will only end in tears.
    As lazyeye and tyborg said, scrap it and get a good new one.
    Cheers
    Rob
     
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  6. 850commando

    850commando

    Joined:
    Nov 1, 2014
    xbacksideslider and solarmoose like this.
  7. CanukNortonNut

    CanukNortonNut

    Joined:
    Aug 8, 2005
    That rim is hurting I think any fixing will still leave it as a gimp. You need to remove the tire and the spokes to get a true assessment of the damage.
    Cheers,
    Thomas
     
    Last edited: Aug 4, 2018
  8. Onder

    Onder

    Joined:
    May 11, 2010
    Absolutely not worth the risk. Alloy doesnt like to be "rebent" in my experience.
    New rim is just money.
     
    JimC likes this.
  9. baz

    baz VIP MEMBER

    Joined:
    May 26, 2010
    i have straightened rims that have had a slight dink but your rim is too far gone don't risk it mate
     
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  10. 850commando

    850commando

    Joined:
    Nov 1, 2014
    before you cave to all the naysayers... get in touch with a company like Woody"s and have them walk you through what they can do.
     
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  11. rvich

    rvich VIP MEMBER

    Joined:
    Jul 25, 2009
    My first impression was to add my name to the list of "let's not".

    (In the photo it is hard to tell if it is just the flange that is bent or if the wheel is no longer round)

    But I find it interesting that somebody straightens cast wheels. What alloys are we talking about in the cast wheel compared to your Borrani?

    It might be comparing apples to oranges and all that but I would contact Kent White at Tinman Technologies. They are really about alloy auto bodies and aircraft but I've never had a communication with him that didn't reveal interesting stuff.

    https://www.tinmantech.com/education/ask-a-metalworking-expert/
     
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  12. grandpaul

    grandpaul VIP MEMBER

    Joined:
    Jan 15, 2008
    I side with Buchanan.
     
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  13. xbacksideslider

    xbacksideslider VIP MEMBER

    Joined:
    Aug 19, 2010
    Thanks for the replies. I'll inquire of Woodys and see what they say. If they are pessimistic then it Buchanan's as they are nearby
     
  14. Bernhard

    Bernhard

    Joined:
    Apr 20, 2011
    May not be worth the expense by the time you have dismantled the wheel, straighten out the rim by some skilled dude with juices use of the mallet –and heat! -How much is your life worth?:(
     
  15. xbacksideslider

    xbacksideslider VIP MEMBER

    Joined:
    Aug 19, 2010
    No, that tire is not too old, yet. The AM 18 Super Venoms are still made, albeit for racing, and are imprinted "non-DOT for off road use only." They're for sale on ebay right now. Expensive but up front it has given long mileage and, being softer, it works great. Yes, it has lost something to heat cycling/drying out but there's still some mileage in it and in terms of traction, it may remain the equal of a new DOT legal Roadrider; the pictured tire dates to 2015. I installed it for a track day in late 2015 along with a hard compound non-dot AM18 for the rear. Loved the tires so much that I bought another non-DOT for the rear. Now it's dead too. At least 2:1.

    Woody's Wheel Works did a great job; I wanted to keep my period correct Borrani, instead of a re-pop. Rode the bike and the straightened wheel during the recent SoCal Norton club's Hansen Dam ride.

    I'll post a picture.
     
  16. CanukNortonNut

    CanukNortonNut

    Joined:
    Aug 8, 2005
    xback,
    Looking forward to seeing the picture of the repair. What did it cost for Woody's repair?
    Cheers,
    Thomas
     
  17. elefantrider

    elefantrider VIP MEMBER

    Joined:
    Apr 6, 2013
    I seem to remember Borrani rims being softer than Akronts. That is better IMHO. I don't think you'll have any problem with the repair holding good.
     
  18. 850commando

    850commando

    Joined:
    Nov 1, 2014
    so its been 3 months; have you made any progress on this repair?
     
  19. kommando

    kommando

    Joined:
    May 7, 2005
     
  20. 850commando

    850commando

    Joined:
    Nov 1, 2014
    missed that, good news