Hello Francesco,
Welcome and congratulations on your IW40. Is her name Salt Dragon
2 ? Do you know her hull number?
I assume you want to remove the lead keel? Our keel studs are
slightly angled outwards so I have always assumed that it would
not be possible to remove the keel without removing at least all
the studs on one side, not just the nuts (I have never done this).
We have tightened the keel bolts once, using a wrench about 50cm
long and moderate force. You should stay well below the maximum
torque that the keel stud size can take.
Sparkman & Stephens may be able to sell you some plans. We
have some, but I am not onboard now so I can not show you exactly
what we have. I have attached the Swedish brochure.
Ciao,
Leo Lindstrand & Jacqueline,
S/Y Firefly, Göteborg