Okay Its been a while since Ive done anything to the Bimmer, Ive been away foe a couple of weeks and the busy with other stuff so tonight I finally got back to working on it!!!
I made a start on the subframe, I'll post a few pics of what Ive done just to update this thread but its only a small piece!
Using the existing subframe mounts I made a start by figuring out how the upper section of the new subframe will bolt up!
I took some tubing an cut it to lenght then I dug out 2 old threaded bar inserts for holding Enduro handguards to use as blind nuts! I drills some holes in the tube, tapped in the inserts and spotwelded them!
The inserts where threaded for M6 bolts so I tapped them out to M8 and cleaned up the welds!
Not much to show for a nights work but at least now Ive somewhere to start my subframe build from!
Ive to figure out exactly how Im going to design the subframe as Ive to consider which way the seat will attach to it and how Im going to deal with the large area between the tank/frame/seat! Im also not using the existing lower mounts, Im making new ones further up the frame and running the lower brace inside the shock, rather than outside like the original!! I'm keeping the lower mounts though as Im modifying the old subframe so that I can swap them over when I want to take a pillion!!!
I'll be back when Ive a decent amount to of work to show you!!