Zipp 2020

[ryanw]

New 454s are stunning IMO

I don't suppose you measured the outside width of the 454 rims, Ryan?

I've got some in the workshop right now. Shall measure up in the AM.

[ryanw]

Pretty much 28mm on the nose (28.02).

[NealHumphries]

Top man, thanks. Optimised for 25's I'd say.

[stjepan]

Anyone running 30mm tyres on the new 404 firecrest? 28mm tyres are sold out at my usual retailers.

I'm quite heavy at around 90kg and started wondering maybe I should go for the 30mm tyres?

Right now have 28mm tyres and there seems to be plenty of clearance. It's a Scott Foil 2021 and officially it can take 30mm tyres.

Hi, can you share a photo of your bike with the Zipp 404? I'd appreciate a chance to drool before I buy them (have also Scott Foil 2021).

[jzinckgra]

Anyone know if you can order the 454s with campy hub body or do you have to buy that separately?

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[ryanw]

Have to buy separate (potentially along with end caps too).

[stjepan]

Got my wheelset today! Thank for all the feedback and guidance. Eventually settled on 303 FC as I got way better deal compared to 404, plus I already have better deep section set.

First thing I did of course is to weight them and got positively surprised - 1381 grams, with everything included as shipped - rim tape, valves and even the valve caps

As for tyres - went with the advice of Ryanw (thanks!) and got Veloflex Corsa Evo 28 TLR.
Rear tyre was a bit of a struggle to inflate on until I used soapy water and booster. Front was a breeze - just my normal track pump (but learning from the rear wheel already prepared with soapy water). Both tyres went on the rim by hand, no tyre levers whatsoever.

Looks - to each its own, but I love how they look. About to ride them later today so will share more.

Attached some photos.

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Hi,

Just a quick question - aren't the Veloflex Corsa TLR's supposed to be used in the 6/8 bar - (85/115 psi) range? I'm looking to get a set myself, but Zipp explicitly indicates 73 psi max for the new 404 Firecrest.
Thanks for the feedback!

[TobinHatesYou]

72.5psi is the ETRTO maximum for straight-sided rims. Zipp has tested tires at much higher pressures, but since they cannot guarantee the safe maximums on a per tire basis, they just print the ETRTO number.

[stjepan]

72.5psi is the ETRTO maximum for straight-sided rims. Zipp has tested tires at much higher pressures, but since they cannot guarantee the safe maximums on a per tire basis, they just print the ETRTO number.

Thanks for confirming back (thought I read that here somewhere already)! So I could run the Corsas 25mm front and 28mm back at 65-72 psi with no issues (I'm at 92 kg/200 lbs) - correct?

[ryanw]

SRAM calculator says you should be at 60F / 64R.

28mm tyres
25mm ID rim
92kg rider
7.5kg bike

[jzinckgra]

Other than being ~200g lighter, why would I choose the zipp 454 nsw DB over the Bora WTO 60? Lifetime warranty of the zipps vs 3yrs with campy is a plus as is the slightly wider rim. Not excited about the cost of the zipps being ~$1000 USD more than the campy's. Not really digging the sawtooth profile of the zipp, but some ride reports claim/say the zipps are more aero and better in the wind.

[jarm]

Anyone running 30mm tyres on the new 404 firecrest? 28mm tyres are sold out at my usual retailers.

I'm quite heavy at around 90kg and started wondering maybe I should go for the 30mm tyres?

Right now have 28mm tyres and there seems to be plenty of clearance. It's a Scott Foil 2021 and officially it can take 30mm tyres.

Hi, can you share a photo of your bike with the Zipp 404? I'd appreciate a chance to drool before I buy them (have also Scott Foil 2021).

Should receive the replacement wheel in a few days. Will post photos then.

[FlatlandClimber]

With Conti now finally having released fast HL compatible racing tires, I have suddenly become interested in HL Rims.
I have figured out for myself, that 353NSW with 28c GP5000s might just be the perfect set up for mountainous grand fondos.
Has anyone here tried the 353 or seen aero-testing of those?

I just saw one media outlet say "they don't hold speed so great but climb well". Sounds like placebo stuff.

[pmprego]

With Conti now finally having released fast HL compatible racing tires, I have suddenly become interested in HL Rims.
I have figured out for myself, that 353NSW with 28c GP5000s might just be the perfect set up for mountainous grand fondos.
Has anyone here tried the 353 or seen aero-testing of those?

I just saw one media outlet say "they don't hold speed so great but climb well". Sounds like placebo stuff.

Man... that change!! Come on. It's not like conti wheels are miles ahead of some pirelli or zipp wheel or so. Of course it's nice they joined the HL rims club (as expected and all others that are not currently will also in the future).

As for aero hability I think cycling weekly puts it very well: "The brand is very open about the fact that the 353 NSW rim isn’t necessarily aerodynamically straight-line faster than the also-45mm 303S. Instead, it has taken its testing out of the wind tunnel and into the real world, claiming watt savings in the region of 10 watts at 40kph through this more holistic - to use a very kale and kool aid friendly term - approach."

There are no magic shapes or black magic and you are very knowledgable in what is more aero and what is not.

[FlatlandClimber]

If the 353 is as fast as the 303, I'd actually be quite happy. I am not a big fan of the sawtooth profile, while I like the looks, I don't think it does anything in terms of aero or stability. If there was a 303NSW at 1200g or so, I'd definitely get those.

I am not sure about HL atm, still in the testing phase for myself. With the Conti 5k being my go to racing tire, and these new tires reported to be significantly faster, it is worth giving it a shot for me.

With my race focus shifting more towards TT on one end (where I only need the flat out fastest components, that don't need to be any durable), and mountain GFs on the other end (where this comfort and light weight combination might come in handy), I feel like this could be interesting.