Crofter
Addicted to ArboristSite
The 681 / 7900 cousins are much in the news recently as pretty hot contenders right off the sales counter. The rather meager improvements that modification yeilds would lead you to believe that a lot of that technology was put in before they left the factory but the size of transfers and ports or the timing durations do not fall in line with what has to be done to make the other ones go. What effect are they capitalizing on to make them such good performers? They seem to be following a different set of rules. How come a good 372 can be made to skin them at higher rpm? (or can they?)