Ok no problem Arne, also your top-down numbering convention makes sense according to your design method. So I will use 40mm x 3 on the first sheeted batten on top. Thank you all for your help.

Oh but I was counting from down to top. I thought this was the convention for panels and batten. In my edition of PJR, they are numbered that way. So from what I understood, batten #2 was the second one after the boom. But in fact, it is the second one after the yard, right?

Arne,

Yes, of course, I want to use your rig design! Just for my personal culture, why is it better to have a stronger tube for batten #2? In "Practical Junk Rig", it is stated that "The loads on the sheeted battens decrease steadily from the uppermost to the lowest", so I thought that upper battens had to be the strongest.

Raphaël

Hello David,

Thank's a lot for your answer. Closest they have is either 35mm x 2mm (0.56 kg/m) or 40mm x 1.5mm (0.49 kg/m). My intuition would suggest using 40 x 1.5, but may be could you confirm that choice?

Regards,

Raphaël

Hi all,

I found a provider for 6082 aluminium tubes for my mast, close from home, and Arne helped me select the correct products based on strengh requirement & availability (thanks again Arne!).

Now, decisions need to be taken for battens... According to FAQ "battens" topic, aluminum tubes should be 6061 or 6063 T8. Provider has a large choice of tubes between 20 and 45mm (and more), thickness 1.5 to 5mm, but only 6060 T6.

Would that still be OK? Also, any recommandation for diameter/thickness that would be good for my 25m2 sail? (small boat, ocean crossing program, sometimes bad weather)

(PS: Here is Jonquette's rig conversion document from Arne's page Jeanneau 6.6m )

Thanks in advance for helping!

Raphaël