(Morrigan, as a synonym of Morgan of Arthurian legend)

Wednesday, 6 May 2015

Single Curvature bodywork

Some more progress with body work design, still needs some more tweaks to the back end, but it is getting there. I'm pleased with the overall appearance, especially that it is all single curvature with the exception of the wings. This means that all of the major panels can be unrolled and be pre-cut from sheet, then 'simply' draped over the forms and fastened to the rib structure.

I am currently using a single radius on the wings as this is simpler to form using rollers, it remains to be seen if this will survive the next design review.

The current all up weight for the assembly is 700kg, so should manage to build the vehicle under a tonne.
Inner structure view
Body work view

Monday, 4 May 2015

Front end arrangement

I though I would share the front end arrangement that I have ended up with, primarily driven by the suspension point locations.

In order to minimise bump steer the steering rack needs to be in-line with the steering points on the wheels. I have opted to use the ford escort rack, as it is readily available in various options as a new part. This will require a pair of extension stubs to bring the ball joints out to the required position.

Heavy tube is used to provide the mounting location of the rack and allows the rack to pass through the chassis with clearance for the track rods when simultaneously in bump and turning.

The link from spring to lower wishbone needs some further refinement and structural checking, fatigue loads are my main concern for that location, given the reversing loads. Additionally the design needs to be an all bolted arrangement; so clevis & pins.

Front suspension arrangement

Edit; A simpler arrangement that can be easily fabricated using water / laser cutting from plate.

Updated inboard wishbone