BLACKBIRD (Skylark Convertible)

Discussion in 'BUILD OFF 14 - CLASS 1 - BUILD JOURNALS' started by The Renaissance Man, Apr 30, 2019.

  1. The Renaissance Man

    The Renaissance Man __CERTIFIED DIVER__ (Open Water & Open Dumpster) Pro Member

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    logo.jpg
    logo.jpg
     
    Last edited: Sep 13, 2019
  2. The Renaissance Man

    The Renaissance Man __CERTIFIED DIVER__ (Open Water & Open Dumpster) Pro Member

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    Skylark starting point.jpg
     
    Last edited: Apr 30, 2019
  3. The Renaissance Man

    The Renaissance Man __CERTIFIED DIVER__ (Open Water & Open Dumpster) Pro Member

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    In the world of vintage bike collectors, there are a hand full of standout bikes that rise to the top of desirability. The Elgin Skylark is one of those bikes! So, it has been on my mind for a long time to take one and dare to do a gender change with it. :)

    When this 'Rare Bird' surfaced last year, it changed hands a couple of times and ultimately landed in my shop.

    Now the time has come to build a restomod TRM Convertible out of it!

    Here we go!!!
     
    Last edited: May 23, 2019
  4. LukeTheJoker

    LukeTheJoker Moderator

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    You know what that frame needs?
    A convertible tank...
    Mullet fenders...
    One of those cool seats that I forget the name off!
     
  5. Chad T

    Chad T

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    This looks like an excellent TRM build...:thumbsup:....get what the jig is for now.
     
    Last edited: May 1, 2019
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  6. G-Matt

    G-Matt

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    So I’m guessing this is your build off bike
    R-Man ?


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  7. OddJob

    OddJob

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    TRM...Too Rat to Mention! :grin:

    Looks like another RaT-astic build in the works. RaT oN~!
     
  8. The Renaissance Man

    The Renaissance Man __CERTIFIED DIVER__ (Open Water & Open Dumpster) Pro Member

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    Sometimes damaged frames are not worth the effort to repair them. This is not one of those times.

    I have had this bike in my shop for months and even while using it to fit my 'Mullet Fenders' I didn't initially notice that the frame has a twist and turn from front to rear. Look closely from end to end and you will see the problem.
    100_6252.JPG
    So I have been devising a jig and a plan to try to straighten it back up.

    100_6282.JPG 100_6283.JPG 100_6284.JPG jig.jpg


    More on how this is supposed to work tomorrow.
     
  9. Ty Henderson

    Ty Henderson

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    TOO COOL!! I'm gonna be a little late starting my build(s) but hopefully I can start on something this weekend. Love your jigs and the frame is wicked cool
     
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  10. G-Matt

    G-Matt

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    Time to get jiggy with it . Definitely a frame worth trying to straighten .


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  11. OddJob

    OddJob

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    Looks like the BB is the fixed point, and then you can crank on the nuts on the head tube and seat tube jigs to 'twist' it back into shape. Maybe play this as your soundtrack in the background...
     
  12. SoulGarageOH

    SoulGarageOH

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  13. handyandy1100

    handyandy1100

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    And if one "twist" doesn't get it, maybe you can "twist again."
     
  14. sdframe

    sdframe

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    Like we did last summer
     
  15. The Renaissance Man

    The Renaissance Man __CERTIFIED DIVER__ (Open Water & Open Dumpster) Pro Member

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    You are right about the BB. Everything else has to line up in relation to it.
    The studs and nuts on the head tube and seat tube fixtures are not for bending anything, but instead are for holding the points steady in the correct location while I use a lever and fulcrum to bent the tubes in between back into alignment.

    100_6295.JPG

    Because I can only pry 'up', I made the jig pieces work for either left or right side down.

    100_6287.JPG
    100_6288.JPG

    This all started with a video that I found while researching how to straighten a frame. Of course the professional set up in the video makes the work a lot more efficient (the guy does a frame in about 2 minutes). Mine is a simple version using some of the same principles, just much more troublesome to use. Two afternoons of fooling with it and it's better but not done! lol
     
  16. LukeTheJoker

    LukeTheJoker Moderator

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    Ah, the jig parts make sense now! Great work!
     
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  17. The Renaissance Man

    The Renaissance Man __CERTIFIED DIVER__ (Open Water & Open Dumpster) Pro Member

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    Im using a combination square to measure from the table to the top of which ever tube is in question and then prying up to the target location.

    Before.
    guage 1.jpg
    100_6294.JPG

    After. (Pay no attention to the bubble, the table is not level.)
    guage 2.jpg

    I'm having to use whatever is necessary to pry specific spots. It's definately not an exact science.
    100_6298.JPG
     
  18. Uncle Shish

    Uncle Shish

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    Barbaric, yet effective!
     
  19. SpikeFC

    SpikeFC

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    I remember reading about a similar method of straightening a bent car floor in one of my cars DIY repair books. The method is really simple just requires a lot of measuring and brutal force.

    Very nice to see that your jig works
     
  20. MazdaFlyer

    MazdaFlyer

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    Think your one step away from building frames. Looking good,


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