I promised to post this for Jack many weeks ago, but with baby arriving etc. etc., well no more excuses - here it is. I ordered a roll bar from Jack based on what I'd seen on his web page. He advised he had a new supplier that would fabricate the roll bar, and hence wanted me to share the result on this forum.
The roll bar came in pieces, including pre-bent hoop, cross-diagonal brace, horizontal bar and two rear stays. I had my own base plates. Everything arrived all taped together, shipped by fedex. The fish-mouths came out really well. I had to modify them on the rear stays, but that was to suit the car. Some minor tweeks of the diagonal brace were required, but that was basically as a result of where I wanted the horizontal bar to finish up.
The bends in the hoop show very slight decrease in diameter - I assume they were mandrel bent, but there's a small 'crease' nonetheless. Nothing that I'm concerned about.
I was nervous about welding this as it would be on show, but I was delighted with the outcome. I cannot comment yet on value as I haven't paid for it yet (or the nosecone) - I still need an invoice from Jack. Hi did assure me of a rough cost, and if true, then this turned out a great deal. Here's some pics:
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Martin