The SCTA rule book doesn't say anything about internal sleeves being
required for butt joints in frame tubing. If I were to butt joint a "straight"
section of tubing, I would install an internal sleeve with rosette welds and
all.
What happens when the butt joint isn't a straight line and the tubes join at
say 20 degrees. Obviously a straight sleeve won't slip in a 20 degree joint.
Bending the sleeve won't work as the two ends of the tubing won't butt up.
What if the butt joint was a 45 degree angle?
The engineering handbook does not require or even refer to internal sleeves
for butt joints. They only require the weld be properly made, i.e. full
penetration.
I built a lakester and had other than straight butt joints, generally
between 10 and 20 degrees. I didn't install sleeves... What do I do now or are
sleeves not required on other than straight butts?
Otto
196.103 at the Texas Mile, apparently in a death trap.
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