Always a tough decision between tubs vs tubeless, but good thing is both will be an upgrade from the clinchers especially if racing.jpmoore4 wrote: ↑Sun Jun 28, 2020 1:17 amI have been researching a climbing wheelset to put on my Emonda SLR. I've just been riding with the stock, aluminum 1550g clinchers. This is what I have concluded:
1. Tubeless will be more effecient, at least up to steep terrain (9%+). This can be calculated based on the crr of the best tubular and tubeless wheels, and the bike + my weight and 15-minute power. The best tubeless tires seem to be 2 watts faster than the best tubulars at 12MPH. So I concluded that a 1300g tubless wheel would be better than a 900g tubular.
2. Aerodynamics matter, even at 10-12 MPH. Savings between a 25mm and 50mm rim is on the order of 5 watts at 12MPH.
I would guess that the break-even point for 900g/25mm tubulars and 1300g/50mm clinchers is around 14% for my weight (55kg) and power (300W 15 minute) taking both aerodynamics and rolling resistance into account.
-- Obviously, at faster speeds/flatter terrain the numbers become even more favorable for deep rims and tubeless.
So I'm leaning towards Farsports 50mm Tubeless with Carbon-Ti hubs.
But go for the tubeless. Remember you need to factor in sealant weight to your calculations (maybe you already are), but the benefits are worth it in my mind. The self-repair of tubeless isn't always perfect, but when it works it's awesome. Especially if you are racing on road with goats/thorns/glass.
Secondly, yes aero matters a lot at your level. You probably already know all this... because I see you doing calculations for speeds of 10~12mph, but for your wkg you're going so fast up false flats and shallow grades that when it comes to corners you need to think much more about the line you take, staying low/aero, holding speed, and even questioning do you keep pedaling through or stop and counter-steer. Folks with lower wkg will be happy to simply pedal through completely upright.
Yeah man, get the tubeless. My only recommendation is to give enough experimentation time before taking them out to race, to make sure you have a good combo between wheel + tire + sealant selection.