[super__dan]

In all honesty a 6.5R would be fine with Nimh cells, a 5.5 with Lipo would be massivly overpowered for worksop!!!

I'm also going slower and smoother motors, now most often a 7.5 in 2wd and it varies between 6.5 and 5.5 in 4wd, but that's with 2008 Nimh cells.