A few company's have had different view's on this subject, For Example....The Xray 808 uses the "truggy" gearing's and uses a large clutch bell to make up the final gearing.....Losi on the other hand tested this with their buggy and felt the stock gearing was more then enough and tunable enough to not bother with changing thing's.....Ive personally tried the truggy gearing in my losi buggy and didn't notice a major change in anything really, So As much as the theory makes sense, I dont know how practical it is to put much thought into.