Working on the sectioned '50 Ford I just got last month; it's been cut 5 1/2" so the steering shaft now p***es through the speedometer cluster.... Going to need to cut it and put in a universal. I expect to need only one to do it, but... IF one doesn't seal the deal, can I use two? I realize I will have to make the upper shaft steady at the firewall, too.
Yes. Two is easy. Firmly mounted column is required, of course. Three joints is where things get complicated.
When things get really tight or it just seems like a better choice use a Double Jointed U-Joint. Not two separate joints and a coupling shaft. That's what's going on here. Just google it, you'll see the advantage.
If you need to use multiple u-joints be sure that the shaft is well supported near the joint so that the whole shaft doesn't just wobble and flail around. If you use 3/4 round or 3/4 double-D shaft and use spherical rod ends to support the shaft be sure to get the oversized rod ends that measure .757" inside diameter on the ball so that it will fit over the shaft properly Lynn