Not an entirely productive day today, woke up with a rotten, properly wet cold.
I still managed to move forward on a few pieces, firstly I decided to tackle the seat mounting, the mounting on the original Deathmobile plans looked a little underengineered to me, and I want a solid, overengineeed monster, even if it does end up weighing as much as a small car, I can always knock up a dolly tray or two with some castors.
So rather than just using four pieces of 2x4 as the supports, I decided to double them up, and used two 16cm 2x4 pieces, glued and screwed together to provide a more stable platform for the seat:
You can see how they support the seat platform here, along with some cross support struts that will fix them in place horizontally:
I decided to lay out the pieces to see if I could spot any issues with the mock-up:
That's when it hit me that I'd made a fairly major mistake, for my original outer rectangle frame I used 2x3 instead of 2x4, when I looked at the contact patch between the steering support uprights and the bottom frame I knew that this was not going to work as well as I liked, the contact patch was too small to provide the rigidity I was looking for, that extra 1"x2" of contact & screwing space was more significant than I had realised.
So tomorrow it's back to the timber supplier for some more 2x4 to redo this outer frame.
It wasn't all bad news though, my ebay gamble on the seat paid off massively, it was delivered and in absolutely brilliant condition and included the rail sliders that I feared I'd have to source seperately, in fact it looked like it had come out of a new car:
£25!!!
The seat sliders did bring along their own issue though, I'd assumed that the rails would be flat and it'd be an easy job to just fix them to the seat platform, not so, they have a metal protusion at the end:
The choices were cut it off, a quick job that
might damage the rails, leave the seat slightly inclined, or I would have to find a more elegant solution, so I found just that:
I made a template that would allow me to mark and cut out the relevant part of the seat platform, leaving the seat flat and in one piece:
Plenty of work still to go, I imagine I'll probably overengineer the steering support uprights too, but if I'm going to do this, I'd prefer to do it once.