Thread: Bobbin Metric
View Single Post
Old 05-23-16, 10:09 AM
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 43,599

Bikes: 8

Mentioned: 197 Post(s)
Tagged: 0 Thread(s)
Quoted: 7607 Post(s)
Liked 1,320 Times in 830 Posts
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.
fietsbob is offline