How you liking the simington so far?
The Simington is a well made grinder. The moter is more robust than the Silvey IMHO.
Mine is a very early model 450. I put a Salmon wheel on it and got some good results.
It does have a mis-alignment as the arm is a different height in relationship to the wheel from one side to
the other (about 1/4-inch). I went to the Simington site posted in this thread, and it goes over shimming the moter true in a video.
I have have yet to have the oportunity to try to fix this yet. I also want to get a hold of the main guy there @ Simington to
see if the arm of the 451-C will bolt up to the 450. This would make the grinder much more precise and versitile.
I may just sell it for what I have into it and keep the R2.