Cracked Luggage Rack

Discussion in 'Airheads' started by disston, Jan 7, 2013.

  1. disston

    disston ShadeTreeExpert

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    I have the Krauser side bags on my '75 R90/6. The racks are chrome. The one on the right side has a crack in the weld that holds one part of it together. It is cracked all the way through for almost one half of it's circumference. So I figure to have this welded and wonder (since I don't do welding) do I look for MIG Welding or TIG Welding or just what do I ask for.

    This should be a small job and I can take the racks off if need be but do I or should I remove the racks to weld them? Can it be repaired in place?

    The metal inside the cracked area is rusted. Should I clean the rusted part down to bare metal before looking for a welder?

    What should this cost me?
    #1
  2. Bill Harris

    Bill Harris Confirmed Curmudgeon

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    Take the rack(s) off and drop them off at the welder. It's thin tubing and he'll need to use his best weld-foo. Let him do the prep. On the cost, "if you have to ask, you can't afford it."

    :D

    --Bill
    #2
  3. rambozo

    rambozo Been here awhile

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    I'd look into getting your welder to add a strengthening plate
    while he's at it
    #3
  4. no5s

    no5s Terror at 2 mph

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    If you are going to rechrome, it would be much cheaper to buy a good used rack.
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  5. disston

    disston ShadeTreeExpert

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    Well I don't think I will rechrome. I think this was broken many years ago in a 360* flip over. The bike has always been just so so. I don't have any bent parts and the bags were not cracked. The front end was slightly bent but I fixed most of that last year. Sub Frame might be slightly bent but if it is it matches the rest of the bike. I have the racks off right now. I'll look around for a welder. Bob's might even do it. Or know somebody who will.
    #5
  6. ME 109

    ME 109 Long timer

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    Mig, tig, arc or braze. All will work.
    Tig will be neatest straight up, Mig will clean up, arc if you have to, brazing will be strong enough.

    All will destroy chrome in the immediate area.
    #6
  7. Airhead Wrangler

    Airhead Wrangler Long timer

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    Yeah, method doesn't really matter so much in this case. They'll probably use mig or tig though. Additionally you can have them grind the welds flush and blend them them with the surrounding material. If you don't plan on rechroming, you'll at least want to hit the welds with some paint to keep them from rusting.
    #7
  8. pecos

    pecos BAM!!

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    Don't waste your time. Buy a new side rack for $35 off ebay and be happy. All of this we are saying to encourage you to take an interest in the things that make up the systems on your motorcycle.
    #8
  9. disston

    disston ShadeTreeExpert

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    :freaky

    You got me good.

    Guess I'll look for used racks. I can still use this one. It is pretty solid when on the bike.
    #9
  10. ignatz72

    ignatz72 call me iggy

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    That was good pecos! I just read the other thread, and that gave me a good chuckle.
    #10
  11. supershaft

    supershaft because I can

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    If they are like most all BMW tube saddle bag racks, welding them will not work because they are brazed. Gas, stick, MIG, TIG will make a mess of them. For some reason, nothing but sloppy crap welds can be had anywhere close to brazing. They need to be re-brazed. I braze gussets on them and use the back cross brace. They crack all the time without them.
    #11
  12. pecos

    pecos BAM!!

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    Just having fun.
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  13. disston

    disston ShadeTreeExpert

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    You had me rolling on the floor.

    Sometimes I am full of a lot of wordy BS. I used to write what is called "Copy". Advertizing for radio. I tend to speak in lines sometimes too.
    #13
  14. Bill Harris

    Bill Harris Confirmed Curmudgeon

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    You are multidimensional, Charlie... :eek1

    --Bill
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  15. disston

    disston ShadeTreeExpert

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    I was an AM radio Disc Jockey when I was in High School. Some of the other older guys will remember how it used to be. It wasn't unusual in those days to work at a small time radio station when in High School. I also worked part time for AFRTS when I was over seas in the Army. And went back to radio after the Army. It's really a much longer story. I tell this story sometimes in some of the Inmates Threads like in the MNwilly Memorial Stay Sober Thread.

    It's been over 41 years now since I was last On the Air. Some parts of such things are getting foggy and sometimes the memories are like it happened yesterday.

    Sorry for all the digression. Now back to clutch repair.
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  16. ME 109

    ME 109 Long timer

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    I hadn't considered that they were brazed to begin with. I've seen one rack repaired with braze..........prolly why it worked well.

    Yes, trying to metal weld near brazing will be difficult. And it will be extremely difficult to remove all the braze from around a tube end.

    Braze away.
    #16
  17. supershaft

    supershaft because I can

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    I tried to warn one of my old aviation bosses that he should keep his welding rods and his brazing rods separated better and more distinctly. Shortly after I moved on he grabbed a brazing rod while welding on a custom bracket onto a longeron of one of the Travel Air biplane fuselages we had made from scratch. I sure am glad I was not there to hear the cussing!! If I remember right it took the two of us working full time about a month to make one. He had to splice that fuselage and I think he never sold that particular one. He was amazed just how far he had to get away from the brazing in order to get a good weld. I wasn't. I had run into that situation before!
    #17
  18. Horsehockey

    Horsehockey A GPS? Huh?

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    Charlie-
    If you want to repair it instead of ebay a replacement, locate a BMX bicycle shop and ask who does their weld repairs. I lucked out and a BMX hall of famer, Gary Littlejohn, lives not far from me. He repaired my cracked subframe. Those guys are experts on tube weld repairs. Takes about 15 minutes for a guy who knows what he's doing.
    #18
  19. disston

    disston ShadeTreeExpert

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    Thanks Bill,

    I still have the racks sitting on the floor in my room. I looked at them again last night and now I can't find the part I thought was cracked. I'm going to figure this out before I put them back on. Seems that rust collects in the corners and it may not be cracked.

    I have to get the rear wheel off and figure out some way to mount a tire. I've never been any good at doing this manually, never. But I think I'm going to try it again. I do this kind of stuff in the Winter because it takes me sooo long.

    Only a couple of months and I have to find a job.

    Charlie
    #19
  20. Bill Harris

    Bill Harris Confirmed Curmudgeon

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    I didn't know that they had radio back then. I woulda suspected runners or smoke signals. :D

    Heck, it's your thread on cracked racks so we can digress. :lol3

    --Bill
    #20