wont the spanner make quite a difference?

because i think you are referring to Torque=Force*Perpendicular Distance.

and in this case the distance has increased significantly.from initially the

distance of your hand to the nut.
to
distance of your hand to the nut+ spanner length.

hmm...but i think that only applies if the spanner + wrench were one rigid piece.?

not sure...been a while since i done physics also..haha
_________________
Philip Ahn
MC21 NSR250R

im poor...