TA, happy to be proved wrong. But logic is that the beam width is made to be 2.5m for a Taipan with the addition of wings. So distance from pivot point is same for Taipan and Viper. But mast for Taipan is 1.17m v 1.25m on Viper closer to pivot. So effect is similar to a wheelbarrow but efforts are reversed. You can move more weight on a wheelbarrow the closer it is to the pivot point, that is the axle. You certainly moved a lot of dirt over the weekend so should have lots of practical experience .

Is this logic right?