When did Ford change from a 4 rivet brake quadrant to a 2 rivet brake quadrant? I thought it was with the '26 models, but I have two '25 cars both with the 2 rivet quadrant. One built Dec. '24 the other built July '25. I also have a '23-'25 chassis with the 2 rivet quadrant.
I believe that most '24s used the four rivet brake quadrant, while most '25s used the two rivet quadrant. I am sure that there was a fair amount of crossover time when both styles were heading out the factory doors. I think I once read of the record of change for that piece. I cannot say that I remember the date, but I think it was late '24. It likely took several weeks for the change to show up.
I have wondered if the TT frame made that same change around the same time.
Darryl & Wayne,
We are blessed that Bruce McCalley left us so many good notes about our cars. The club maintains his on-line encyclopedia at: http://www.mtfca.com/encyclo/index.htm
And scrolling down to Chassis (or clicking on: http://www.mtfca.com/encyclo/C-D.htm#Chassis1 takes us to:
First 2500 1909
...During 1925 the brake lever quadrant was modified. Instead of four rivets holding it to the frame, only two were now used. This new quadrant continued until the end of Model T production in 1927.
Bruce’s book as well as his CD version of his encyclopedia has additional details for most items along with photos. The CD’s are available from: http://www.mtfca.com/discus/messages/3487/764037.html?1497493861
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Thanks guys, I knew someone had better info on this than I did. Darryl