JD frame differences

[Jerry Wieland]

How much/many differences between a 1918 to 20 JD frame and one about 1923 to 24. Thanks Jerry

[exeric]

I believe the 1920 frame had a reinforcement on the front down-tube, just under the headstock, which would make it different than frames before 1920. Otherwise, I think they are similar from that point, to the back of the frame. Of course, Mark Masa will know. My knowledge gets sketchy after 1917, and is next to worthless after that