[Larry Lewis]

Our team has been using the second arrangement as shown in your original drawing. The only difference might be with the orientation of the chain tensioner. We tried out a live axle last year and it did what it was supposed to but the extra work didn't seem to buy us much. This year we are going to try a 1/2 inch diameter bolt as our axle and mount the wheels on bearings. In the end it is really just figuring out what works best for your team.