Gord Trail has a very nice 48 Cub that has been lovingly redone. Notice I said redone and not restored to factory - that way no correct police will be involved
His tractor is not a working tractor at the moment, but is primarily a show tractor. Some on the board have seen it at CubFest Northeast 2004. A very pretty tractor it is.
We have been trying to figure out a problem for months now and have yet to quite get it solved.
In 3rd at anything above 1/2 throttle, she surges like crazy.
Surging can be caused by a improperly set governor, a sticky governor, a sticky rod etc.
Surging can also be caused by dirt in the fuel and blockages in the screens, main jet, or any of the passages in the carb.
Right
Or am I still missing something 
Gord has had his tank done, the gas is clean as can be expected. Not even a hint of dirt particles in the fuel bowl. The screens are clear, both orifices in the main jet are clean and clear, the float is set properly, needle and seat hve been done... you name it, it has been done.
The governor was rebuilt by a very knowledgeable man who does restorations for 2 of the areas largest collectors (boy do they collect farmalls
). Gord and I replaced the bumper spring as it was not responding as it should.
It appears that all is working properly. We just cannot eliminate the surging.
I have read, re-read and re-read the manual ad infinitem on this subject and I just cannot seem to find the answer to the problem.
I think I need some fresh thinking on this.
The only thing I can think of is the rpm's - either to high or too low (hence the question on tachs on a mag ). Outside of that, I am flustered.
Thoughts gentlemen please
Fella's I know this is going to sound like some off the wall advice but not to long ago I had a similar problem, thought it was gas, Govener, then carb. Turned out to be the Coil. I don't know if this will help, but when I red this I felt the need to put my two cents worth 
