Posted by rankrank1 on December 28, 2013 at 08:56:27 from (166.137.101.151):
In Reply to: John Deere B Top Speed posted by Bryce Frazier on December 27, 2013 at 21:50:55:
Likely to be an interesting race.
1942-1946 JD model B factory specs at 12.25 mph in 6th gear with 10-38 tires at factory spec rpm.
1953 Jubilee factory spec'd at 11.55 mph mph with 10-28 tires. One caveat though the Jubilee was rated at 1750 rpms on the drawbar, but 2000 rpms for stationary belt work. So I think those factory numbers were at 1750 engine rpm. If he pulls the throttle till 2000 WOT then the speed will be 13.2 mph again with factory tires. (2000 rpm is a valid throttle setting on his jube without cheating)
Whose replacement tires are more bigger in diameter than factory originals and whose engine's governor/linkage settings are less worn so that the original intended factory spec rpm's are the most closely achieved will likely determine the winner. (assuming no one has actually cheated to obtain more engine rpm by altering governor settings to obtain more than factory spec'd rpms which is certainly doable on either machine).
This post was edited by rankrank1 at 08:59:33 12/28/13.
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