Building work commences

Started modifying the trailer today.  The design builds on the boat trailer with a main beam down the middle and the floor and fuselage structure build off that.  The kinked cross beams of the boat trailer have to be taken into account, but this isnt much trouble.  The small length of tube sitting on top is one of the pieces that will be welded in to create a flat frame for the floor plate to sit on.

My welding was rather a lot better this time round owing to the much thicker material.

Next comes the floor plate, but this cant go down till I know the position of the wheels.  I suspect they need to go further back as my design has a lot more weight at the back.  I am currently working out the weights on all the parts and using a bit of high school maths to work out the final C of G.  Not too difficult, but time consuming.  The trailer in its current state as seen in the pics is 113kg.  Not too bad.  I would like to keep the whole thing under 750kg so it doesn't need its own breaks.