not sure, with my 26x12x12 16 paddle STU's on 10" wide wheels i had too much bite. then i cut everyother paddle off and it was better but still too much.
the Weller gearing is too tall for paddles. 54 rear is too small, not enough wheel spin. i have a 68 tooth rear sproket i had made but have not installed it. this sproket will get my gear ratio right around 5:1. that would be the same ratio most mini rails use.
i will loose some ground clearance but in the sand i am not worried about it at all.
this dune season will be great with all of the R1 power plants out there we should be able to get some good insight as to what really works.