I suspect Dylan is right. But you shouldn't need loads of spokes. The maths for normal calculations won't work. Roger Musson, the Wheelpro man, does have a different calculation method using radians, but I'm not sure how that works.
Just looking at the tangent angle of the spoke at the hub implies a length between 3 and 4 cross. Flickwg, what numbers do you have for the hub measurements and rim ERD? Just for fun.
I suspect Dylan is right. But you shouldn't need loads of spokes. The maths for normal calculations won't work. Roger Musson, the Wheelpro man, does have a different calculation method using radians, but I'm not sure how that works.
Just looking at the tangent angle of the spoke at the hub implies a length between 3 and 4 cross. Flickwg, what numbers do you have for the hub measurements and rim ERD? Just for fun.