recently given a seagull extra 260 with a 1.80 4 stroke magnum. The plane needed a few items which was no problem but was missing a wing joiner tube. I had measured and came up with a 1.27 od. I have gone on seagull to find a dimension but had no luck.
Does anyone have a idea of the correct sizing.
Regards,
Greenberet

if this helps>>

1.27 , that is 32,2580 mm

https://www.towerhobbies.com/help/convcalcs.html

Jim