Hi,

thickness is 4mm, they all have a square profile with 10x10cm.

the front beam is chamfered as can be seen on the photo, the width is 334cm and 338cm respectively

Hello Jan, all those discussions about alu beams in the forums here lead me to the question of needing a dolphin striker at the main beam. I don't have such a striker - is it really needed? I never had the feeling that it needs more support. What's your opinion? I've read that the Wharram designers absolutely say yes, which makes me sceptical, maybe I just had great fortune over the last years...  Regards/Grüße, Reinhard