Not to argue, but when I was researching the very same thing, I believe it was '66. So now you probably have 2 wrong answers. I think there is a tech article in the HAMB on just such a thing. Look there.
Wasn't first F-1 actually 1948?? The new truck line made it into production considerably ahead of the new car line.
That's what I was thinking, Bruce. But what exactly is the difference between self-energizing and self-adjusting?
The definition of self energizing is: Property of a drum brake, whereby the braking force is increased by the braking action of the shoes against the drum. Self-energizing brakes may or may not be self-adjusting. Self-energizing brakes can be identified by having only a single pin at the top of the backing plate. The shoes will be held on by sprung retainers and will have a screw adjuster between the shoes at the bottom. The front shoe is activated by the wheel cylinder which kinda wedges the rear shoe into the drum. A little brake effort does a lot of braking. Notice how on the earlier ford juice brakes the shoes are retained at the bottom of the backing plate with adjusting eccentrics and retained at the top by the wheel cylinder? No "wedge" action. The 2 shoes don't work together. Speaking of wedge action. . . ah, much better. Too much time sitting down. Anyways, ya, self-energizing good, self adjusting is better cuz you don't have to manually take the drum off and manually adjust the brakes. Backing the car up and hitting the brakes does that for you. Sorry if that was too much info.
Yes, guys, you are right that the first F-1's were in '48. But they had regular, non-energizing brakes like the p***enger cars did. I have an axle w/brakes to prove it. The F-1's in '49 got the self energizing brakes, just like cars did.
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