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Thread: Cold-setting rear triangle question

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    Default Cold-setting rear triangle question

    First build is built up. Unfortunate thing is my jigging must have slipped, and one dropout ended up being 1.5mm lower than the other. As a result, the rear wheel is about 1.5 degrees off of vertical alignment.

    Bike rides fine. I don't feel it pull to one side or anything. Is there a way to bend it back into plane, or would that require unbrazing seat stays?

    E

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    Default Re: Cold-setting rear triangle question

    Get a file (rat tail, or flat if these are horizontal parts) and show the underside of the dropout who's boss atmo.

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    Default Re: Cold-setting rear triangle question

    Interesting ... yep, these are track drops. I guess if I file down the upper side of the low DO, the axel would end up level.

    So, there's no bending that can take care of my mistake?

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    Default Re: Cold-setting rear triangle question

    If the seat stays are on, there's no way you're going to get it to bend up. The file trick is a tad sketchy on track dropouts, but that's what I would do.

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    Default Re: Cold-setting rear triangle question

    Thanks all.

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    Default Re: Cold-setting rear triangle question

    Try un-brazing either end of the seatstay and then cold set the CS and re-braze the seatstay. Depending on design, it might be easier to un-braze SS from the seat cluster.

    Alternately, if you do need to file top of the horizontal dropout higher, you might be able to fill-in the bottom of the DO slot with bronze or else braze a thin strip of steel to bottom of the slot so that the slot doesnt get wider.

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    Default Re: Cold-setting rear triangle question

    No - don't do this ^ atmo. You'll be throwing good money after bad. You've already screwed up. Limit the losses. Heat would be the enemy now.

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    Default Re: Cold-setting rear triangle question

    I thought the standard answer should be

    "Dude it's your first frame, be glad it rolls sorta semi straight and not in circles. Learn from what mistakes you made. Get another tubeset build up it's replacement and hang that FSO on the wall with pride."

    Or something like that.

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    Default Re: Cold-setting rear triangle question

    Quote Originally Posted by shirk View Post
    I thought the standard answer should be

    "Dude it's your first frame, be glad it rolls sorta semi straight and not in circles. Learn from what mistakes you made. Get another tubeset build up it's replacement and hang that FSO on the wall with pride."

    Or something like that.
    It's better to be nice than brutally honest. If we were as honest as we'd like to think we are,
    a good deal of the posts about similar issues would get your reply in one form or another atmo.

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    Default Re: Cold-setting rear triangle question

    Quote Originally Posted by eschallenberg View Post
    First build is built up. Unfortunate thing is my jigging must have slipped, and ...?E
    so you didn't check your frame after you tacked the rear end?

    or you brazed it in the fixture?

    i know this isn't the question, but that has been answered. what is important is that you/others learn to avoid the mistake.






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    Default Re: Cold-setting rear triangle question

    shirk: I _am_ glad that it rolls and that I can ride it without it flying apart (so far) ... and I'd be okay leaving the wheel off ... was just wondering if there was something quick and dirty I could do to repair my mistake.

    Wade: I checked as best I could ... I'm working with a vise and a protractor here. I measured, pinned my CS's, rechecked, string checked, fluxed up, re-pinned, checked ... I brazed out of my jig, so I think something moved ... but, truth be told, for a first frame I think 1.5 degrees is not bad.

    E

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    Default Re: Cold-setting rear triangle question

    great. just checking your chekkins.

    and btw, i have a free granite slab if anybody wants it...nevermind the names on it they're all done with it.

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    Default Re: Cold-setting rear triangle question

    Quote Originally Posted by WadePatton View Post
    great. just checking your chekkins.

    and btw, i have a free granite slab if anybody wants it...nevermind the names on it they're all done with it.
    This is actually really funny.

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    Default Re: Cold-setting rear triangle question

    Quote Originally Posted by WadePatton View Post
    so you didn't check your frame after you tacked the rear end?

    or you brazed it in the fixture?

    i know this isn't the question, but that has been answered. what is important is that you/others learn to avoid the mistake.
    Says the guy with one frame under his belt..........If we are going to be brutally honest, here.
    XXOO - Garro.
    Steve Garro, Coconino Cycles.
    Frames & Bicycles built to measure and Custom wheels
    Hecho en Flagstaff, Arizona desde 2003
    www.coconinocycles.com
    www.coconinocycles.blogspot.com

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    Default Re: Cold-setting rear triangle question

    Quote Originally Posted by steve garro View Post
    Says the guy with one frame under his belt..........If we are going to be brutally honest, here.
    XXOO - Garro.
    your count is off sir.

    but yes it is miniscule and therefore all of my input is suspect? I'll go get back under my rock.

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    Default Re: Cold-setting rear triangle question

    Quote Originally Posted by WadePatton View Post
    (1)your count is off sir.
    (2) it is miniscule and therefore all of my input is suspect?
    (3) I'll go get back under my rock.
    (1): By how much?
    (2) Um.......kinda......
    If info is 1st hand I'm all for it - if it's 2nd hand, then yes.
    Is it some thing you KNOW, or just read on the WWW?
    (3) Why?

    We love ya man, but somethime the "I'm not a builder, I just play one on the WWW"
    Wears kind of thin.
    I wish more then anyone WPV was posting in every FNL - I REALLY DO - and here this cat is MAKING something - He may very well know more then you.
    See you next FNL?
    Please?
    Won't be the first framebuilding site I've been banned from I reckon.........
    - Garro.
    Steve Garro, Coconino Cycles.
    Frames & Bicycles built to measure and Custom wheels
    Hecho en Flagstaff, Arizona desde 2003
    www.coconinocycles.com
    www.coconinocycles.blogspot.com

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    Default Re: Cold-setting rear triangle question

    Quote Originally Posted by e-RICHIE View Post
    Get a file (rat tail, or flat if these are horizontal parts) and show the underside of the dropout who's boss atmo.
    My #2 frame was similarly 'goofy'.

    Since I was using horizontal dropouts, I filed a little from alternate sides on each dropout and then took the 'opportunity' to lay down a little brass on the other side and file that square so that when I slid the axle in it had a satisfying feeling w/regards to the tolerance/fit/wiggle. Its now one of many hanging on the wall anyway. :)

    I've screwed lots of stuff up, but suspect (device) have learned more from my screwups than the sometimes 'luck' of doing things correctly.

    Lets see some pictures!

    -Bernie

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    Default Re: Cold-setting rear triangle question

    I think Mr. Patton has recently posted pics of his 38th frame somewhere on the WWW.

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    Default Re: Cold-setting rear triangle question

    Quote Originally Posted by busdriver1959 View Post
    I think Mr. Patton has recently posted pics of his 38th frame somewhere on the WWW.
    I'd sincerely love to check them out.
    - Garro.
    Steve Garro, Coconino Cycles.
    Frames & Bicycles built to measure and Custom wheels
    Hecho en Flagstaff, Arizona desde 2003
    www.coconinocycles.com
    www.coconinocycles.blogspot.com

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    Default Re: Cold-setting rear triangle question

    Quote Originally Posted by busdriver1959 View Post
    I think Mr. Patton has recently posted pics of his 38th frame somewhere on the WWW.
    I don't mind Mr. Garro givin' me shit at all. I get his angle and shall not fuss about it.

    But I don't know you and this is shit for shit's sake. Please take your shit somewhere else. If you can find where i have posted un-helpful information or information not intended to be helpful, then let's discuss that. But an pile-on event shall not be tolerated.

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