Does anyone know if the fiat spider 2000 hub will fit the early x1/9's? Id be happy to measure the OD of the column splines but not sure how many teeth.
The 124 & X1/9 shaft splines are the same. Before 1972 the self cancellation interface with the column control switch is different. If you don't get a hub for 1973 and later, it won't cancel the turn signals.
I have hubs in stock, new and used, for Momo, Nardi, and Abarth wheels (they all use the same pattern). I should also have the current production Abarth horn button.
I don't have any steering wheels that are flat across the bottom, but member Richard Kraus makes them from stock steering wheels. Mark Plaia also had issues getting his legs under the steering wheel of a 1979-82 X, and he developed a way of taking a section out of the seat bottom foam to add the clearance he needed. That might be posted in the archives. I thing it was also a guest tech tip in my book.
I still have the steering wheel Mark Plaia put into our race car. It's 13" outside diameter, and is mounted on an X1/9 compatible hub. The leather cover is sun damaged at the top. Mark liked it that way, that way when he got all crossed up he would know when the front wheels were pointed ahead.
When I took over custodianship of the race car, I put a larger wheel on it, as the 13" is just too small for me. Especially with my bum arm.
If you are interested in Mark's old wheel I would sell it. If you want to see a picture just ask. My problem is I would want at least what the hub is worth, which makes the almost 11" 850 wheel above a great deal.