Don't forget that the differences are not huge, we are talking about nuances between wheels of (nearly) the same height - nothing you would be able to notice on the road. And Campy rims are not that "square", but the 50mm Bontrager has a wider 27mm rim (105% rule) and more inner width (19mm, if it's the D3 model), so the tire shoulders stand straighter and assure a better transition from tire to rim. So the LightBicycle wheels should excel here with 23mm inside, but the 30mm outside also increase the frontal area... Mavics are lower, narrower but only have 36 spokes, that also helps and they are quite close to the others.aeroisnteverything wrote: ↑Tue Sep 11, 2018 12:37 pmDoes it though? Bora 50s perform virtually identical to the 56mm deep LightBicycle and also same as the Bontys. Mavics at 45mm are only marginally worse, and still within the margin of error. How do we explain this? Is this is a fluke?Beaver wrote: ↑Mon Sep 10, 2018 8:59 pm
In the end a round shape and fulfilling the 105% rule seems to help after all: the Bontrager are 27mm wide outside, 19.5mm inside, with a 23mm tire that's quite a good match.
And Hambini added the new Light Bicycle rim with 30mm outside, 23mm inside - this is also quite good, especially at high speed:
So frontal area, 105% rule, inner width, and the numer of spokes are relevant, for the last 0,x watts also inner spoke nipples, spoke shape and width, hub size and shape and so on.
Roval CLX 50 would also be interesting for comparison.