Thread: Bobbin Metric
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Old 05-23-16, 10:09 AM
  #6  
fietsbob
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Watch that top of the head tube sides brazing Abu, my frame wih twin top tubes failed there .

there is leverage from the front wheel that the similar joint at the top of the seat tube never sees..

I had a Irish welder repair the frame crack and add a gusset behind the head tube in the first months of a Bike tour..

the single top tube mitered directly into the back top of the had tube has a solid record of a long time durability

as would a Mixte lug where the tubes converge behind the head tube , rather than remain Parallel.
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