Guys,

Model is hovering around 20kg - just a fraction under.

The scales 'show' tenths of a pound i.e 3.1lbs, 3.2lbs, 3.3lbs so 'should' be fairly accurate. I can't find any 'accurate' scales that go to the weight I am after.

My concern is that I have tried various formulae and they all give different results.

Am going to spend some time doing this very carefully at the weekend - hopefully I can get away from what appears to be a need for some weight in the tail. At the mo it looks like the ECU battery is going to end up behind the stabs!!

Rgds,
Mark