PedalingHertz wrote:
Thanks. I'm going to keep researching the issue. I like that the November wheels are wider but wonder if I really need the 28s on the race set. If not, I may just go with the heds and use 25s. As you say, I def want them on my stock wheels for everyday use. But I don't think I want to race on my stock set with 28s on them due to weight and aero penalty, so I'll wait until I have a dedicated set of race wheels to do that. With 2 local tri sprints coming up in the next 2 months, I'd like to get the upgrade done relatively soon. If you make your bike faster and don't race it, you didn't really make it faster, did you. :)
Honestly, if you’re doing tris on a tarmac, have you optimized everything else like aero helmet and suit? Otherwise, narrower tires and deeper wheels are not your low hanging fruit. Also about the HEDs. You would actually have to run something like 22s or 23s on that front tire, because again, the 105 rule. A 25 labeled tire would balloon up to 27 or 28ish on those wheels and you run into that problem of have a tire too big for the rim. Those wheels are too old for disc brakes and too narrow with only a 25mm external. It’s a really bad deal actually if you plan on running 25s. If you run 22s, then it’s fine. The whole point of disc brakes is to break free from old rim dimensions. Going with an HED is a bit out of date with disc brakes IMO. There are plenty of other rim options from November, light bicycle, roval etc.
edit: If you're going to spend HED Jet plus money, you're better off going with
https://novemberbicycles.com/...riant=28614804570205
or at the higher end,
https://rovalcomponents.com/products/cl-50
I'm sure there are others but there's a common theme here. 21mm internal, 28+ external, 50ish deep. That's modern dimensions for disc brakes and would be excellent for the tarmac disc. You can run the 25c front tire for race day to be maximum aero and 28c for everyday.