Correct me if im wrong, but don’t the holes in the rim make it less strong? I would rather know that my rim is strong rather than save a few grammes. Maby this is down to personal preference but i don’t mind lugging the extra weight around, i like my uni to be beefy.
Um, maybe I’m not getting something but how can there be 32 big holes and 48 spoke holes? From the picture they seemed to be spaced evenly, so unless the big holes aren’t drilled between every spoke hole, or they toss some extra spoke holes closer together, 32 holes would be the number of spoke holes and drilled holes. And from the website
“These are sweet rear rims from ZHI. 48mm wide, drilled, 32 hole in red, green or gold. For stockbike (26”) or rear of mod bike (19"). NOTE: these rims are too wide for older stock bike frames to set up rim brakes with, always tell us what type frame you have so that you might have the correct choice first time around."
Now, I imagine they would list the number of spoke holes in the description, seeing how that is more critical then how many other holes are drilled in it.
As far a drilling holes in the rim, the rim’s are huge and engineered with the intent of drilling holes in it. The metal in the middle of the rim isn’t as critical because of the particular stresses experianced by the rim. The stresses may be different for uni and bike trials though, so it doesn’t neccesarily make it a better rim for everything.