Zipp 2020

Everything about building wheels, glueing tubs, etc.
TobinHatesYou
Posts: 8445
Joined: Mon Jul 24, 2017 12:02 pm

by TobinHatesYou

I don't think Zipps have drainage holes.

by Weenie


Visit starbike.com Online Retailer for HighEnd cycling components
Great Prices ✓    Broad Selection ✓    Worldwide Delivery ✓

www.starbike.com



IceLed
Posts: 69
Joined: Fri Aug 02, 2019 12:02 pm
Location: Netherlands

by IceLed

Yes, there are (luckily).

Also, just came back from Dolomites, and happy to provide an update - excellent climbing set, great engagement by the hub, outstanding stability in descending and on top of this - amazingly forgiving both riding on not ideal tarmac and extreme cornering. Image

Sent from my SM-G973F using Tapatalk

S-Works Venge 2019 Battleship
Previous bikes:
Canyon Aeroad CF SLX Disc 2019
Canyon Ultimate CF SL Disc
Canyon Endurace AL
Cube Agree C:62
Cube Peloton

kervelo
Posts: 529
Joined: Wed Jan 21, 2009 6:58 am
Location: Finland

by kervelo

TobinHatesYou wrote:
Mon Jul 26, 2021 8:59 am
I don't think Zipps have drainage holes.
The latest 303S wheels have drainage holes. I have one set of 303S from last fall and those wheels do not have holes. Another set of the same wheels from this summer has the holes.

According to Zipp customer support it is also possible to get the holes added to the old wheels: the wheels can be sent to them for that.

Tofast
Posts: 25
Joined: Tue Jul 23, 2019 9:22 am

by Tofast

IceLed wrote:
Mon Jul 26, 2021 9:46 am
Yes, there are (luckily).

Also, just came back from Dolomites, and happy to provide an update - excellent climbing set, great engagement by the hub, outstanding stability in descending and on top of this - amazingly forgiving both riding on not ideal tarmac and extreme cornering. Image

Sent from my SM-G973F using Tapatalk
Thanks for the info and photo :)

macwatt
Posts: 29
Joined: Thu May 13, 2021 10:09 am

by macwatt

Can someone please explain why Zipp recommend 28mm tyres for both Zipp 303S and 303 Firecrest. I can understand 28mm being the fastest for Firecrest as it's the narrowest recommended tyre which would make the inflated tyre and outer rim width the same at 30mm. This however does not rollover to the 303S as the external width is only 27mm therefore a 25mm would make much more sense otherwise a 28mm tyre would be sticking outside the rim. I have fitted 25mm Schwalbe Pro One tyres to my wife's road bike they are pretty much flush with the external rim are super comfortable with Zipp's recommended tyre pressure therefore don't see what would be gained by fitting 28mm tyres.

Jackofallgrades
Posts: 178
Joined: Tue Oct 08, 2019 10:15 am

by Jackofallgrades

They recommend 28s based not only on aero, but on rolling resistance gains, as they are assuming mixed terrain usage. That's where the Total System Efficiency claims stem from. Obviously if you're only using them in the road, 25s would be a better choice given rule of 105 and so on.
Cannondale SSEvo3 'Atticus' - 7.2kg
...Work in Progress viewtopic.php?f=10&t=161634

thegeekycyclist
Posts: 14
Joined: Tue Nov 07, 2017 11:44 am
Contact:

by thegeekycyclist

Is anyone running a 30mm tire on their Zipp 303 Firecrest? How wide do the tires measure?

Ypuh
Posts: 522
Joined: Sun Dec 08, 2019 10:20 pm
Location: The Netherlands

by Ypuh

Spinnekop wrote:
Fri Jul 16, 2021 8:53 am
Very bad experience. After I have been an avid Zipp supporter - 7 sets of wheels, bars, stems etc - this will be my last buy from them. SInce their take-over by SRAM it has become a bit of a mess. :noidea:

After about a month the local importer graciously offered to build a 177 hub into the wheels which I am now riding while I wait.
It boggles my mind why Zipp keeps experimenting with their hubs so much.

Timeline:
- 2010-2015 or so: Their (I believe) 76/176 hubs broke flanges regularly, and preload setting was a common point of failure
- 2015-2020 or so: 77/177 resolved problems with flanges and preload
- 2018-2020: Introduction of Cognition hubs, reintroduced common problems with slippage
- 2021: Introduction of Cognition v2 hubs to resolve previous problems

I've got the 77/177 hubs and those are faultless, fixing all of the issues of the previous gen. Why then update the hubs shortly after to introduce new issues into the market? A hub is a hub, there's not that much to innovate. DT is doing the same with their 240 EXP hubs altough that has to do with a patent expiring and their urge for proprietary parts. Zipp already has a bad name when it comes to hubs though, so to protect their rep I would assume they'd be more wise.
Cervelo S3 - 7.29kg

pmprego
Posts: 1610
Joined: Mon Jan 21, 2019 3:16 pm

by pmprego

Deleted

jarm
Posts: 29
Joined: Tue Jul 28, 2020 11:28 pm

by jarm

Deleted, double post .
Last edited by jarm on Wed Aug 18, 2021 5:47 pm, edited 1 time in total.

jarm
Posts: 29
Joined: Tue Jul 28, 2020 11:28 pm

by 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.

jarm
Posts: 29
Joined: Tue Jul 28, 2020 11:28 pm

by jarm

So I ordered the Zipp 404s. The wheels came with tubless tape and valves attached.
Front wheel seems good, but I'm not sure about the rear wheel.

Inflated them both to 4 bar. I didn't use any sealant, just to see if they hold air. Front was easy to inflate, Schwalbe Pro One poped nicely. But then the rear wheel didn't inflate.

I examined the valve and rim more closely and the valve hole is off-center. Is this normal?

Then there is somekind of plastic foil inside the hole. What's with that?
Also the inner surface has strange edge. Is it normal or a manufacturing defect?

I havent tried to inflate the rear wheel with sealant inside. Thought I'll ask first if what I'm seeing is normal or should I send it back?

Thanks,
Joe

EDIT:
Examined the wheels further and on rear wheel, I can see this strange plastic also in the spoke holes. Nothing on front wheel.
Found another spot where the inner surface is not smooth, the x like marks on the inside.
Attachments
20210914_161247_1.jpg
20210914_161428_1.jpg
20210914_160842_1.jpg
20210914_160920_1.jpg
20210914_162331_1.jpg
20210914_162355_1.jpg
20210914_165951_1.jpg
20210914_170201_1.jpg

jarm
Posts: 29
Joined: Tue Jul 28, 2020 11:28 pm

by jarm

Measured the witdh of 30mm Pro One tire at 4,5 bar and it's 30,50mm.
Fitting and removing it was super easy. No tools needed.
Attachments
20210914_172317_1.jpg

jarm
Posts: 29
Joined: Tue Jul 28, 2020 11:28 pm

by jarm

Asked my LBS and they said it shouldn't be like that. The plastic is fine, as part of manufacturing process, but valve hole should be centered and at Zipp price level the inside should be smooth.

NealHumphries
Posts: 36
Joined: Fri Oct 18, 2013 10:16 pm

by NealHumphries

ryanw wrote:
Mon Jun 28, 2021 11:20 pm
New 454s are stunning IMO :thumbup:
I don't suppose you measured the outside width of the 454 rims, Ryan?

by Weenie


Visit starbike.com Online Retailer for HighEnd cycling components
Great Prices ✓    Broad Selection ✓    Worldwide Delivery ✓

www.starbike.com



Post Reply