Classic & Vintage - What is this? Weird frame nub content...

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The MAX
04-28-12, 01:17 PM
So I just finished fixing up a 92 (I think) Giant Yukon. Nothing real top of the line, but a solid bike, and will make a great commuter for someone.

http://img.photobucket.com/albums/v101/funkcriminal/DSC_0738-1.jpg

And I noticed this weird braze-on/nub on the non drive side chain stay. Never seen one before and can't even imagine what it might be for. Any ideas? I thought it might be something to do with the quick release lever, but the lever doesn't even touch it.

http://img.photobucket.com/albums/v101/funkcriminal/DSC_0747-1.jpg

Captain Blight
04-28-12, 02:53 PM
That is weird. When you figure it out be sure to let us know.
hueyhoolihan
04-28-12, 03:15 PM
might be a fixture for a proprietary rack, or maybe a fancy mounting point for the brake arm of a coaster brake hub... IDK.

Grand Bois
04-28-12, 05:02 PM
I'm stumped, but very curious. Clean up the rust on that QR before you try to sell it!
brian3069
04-28-12, 05:08 PM
I have the identical bike, never notice that.
bobdell
04-28-12, 05:38 PM
I'm guessing an anti-rotational nub for a rear kick stand, but that's a guess.
repechage
04-28-12, 07:13 PM
I'm guessing an anti-rotational nub for a rear kick stand, but that's a guess.

I agree with that conjecture.
Fenway
04-28-12, 08:31 PM
Would make sense with the two bolt holes in that dropout.
pastorbobnlnh
04-29-12, 03:06 AM
I'm guessing a mounting and anti rotational nub for a disc brake system.
Bianchigirll
04-29-12, 05:39 AM
I think that bike is too old for a brazeon for a disc brake. I lik the Kickstand idea or maybe something for a kid trailer?
Grim
04-29-12, 08:01 AM
Was the frame assembled in a automated welder? Might be for indexing purposes.