How wide should a wishbone be compared to its length. It has just struck me that my single seater wishbones will be twice as long as they are wide.

Not sure but I guess your con fig would increase the forces on the chassis under breaking..

one of the major factors will be where you locate the shock absorber and spring as this will be where the most force will be exerted

The advantage in width is that a softer bush can be used, without a huge change in geometry under load.
2:1 sounds ok to me.

Darren

It's the angle that the tubes form to the line between the pivots that's important. As soon as you go above 45degrees the tubes load up, above 60deg and things load up quickly.

And as said already, where the coilover mounts is vital as well. The further out and lower to the c/l the better.

Cheers,
Nev.

My coil overs are mounted inboard and the top wishbone forms a tetrahedron so that shouldn't be a problem. If 60° is some sort of top limit, I might have to think about widening them. It shouldn't be too much of a problem.