Open mold wide profile carbon wheels

Everything about building wheels, glueing tubs, etc.
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Jugi
Posts: 166
Joined: Sun Jun 24, 2018 8:10 am

by Jugi

romanmoser wrote: ↑
Sat Aug 25, 2018 4:05 pm
tell us how the rims are after a few rides ;)
I suffered through a flu during the week and was busy at work as well, so couldn’t really get a ride done. However today I finally managed to get 40k’s of casual spinning done.

This is what I have experience with (what I compare these to):
Easton EC90 SL tubular on my Specialized Tarmac
FFWD F5R + F5C tubular on my Specialized Tarmac
Zipp 808 + Zipp 900 disc tubular on my Scott Plasma 2
Novatec 30 Disc tubeless (OEM wheels on Felt F4x)

First impressions:
If you want to make a cyclocross bike fast on the road, these wheels are a solution. In general I think that every bike build has a certain ”structural velocity”, which I mean speed that is relatively easy to maintain. These wheels definetly improve that. I’m not going to disclose any speeds as they are always relative to the route and conditions, but I’m leaning towards these being on par or even a little faster than my Tarmac on the EC90s. This was a very casual ride and I wasn’t hunting KOM’s or anything like that, but the potential was there to be felt.

There is something in the front end handling I don’t like. The bike feels hesitant to lean into a corner. I suspect it’s either the front tire’s shape (as it is so bowed out) which is making the transition from center tread to the tread’s side feel laborsome, or it’s just the tire’s width which is adding inertia. It would be interesting to throw a 28mm tire on the front wheel and see whether that makes it worse or not. I didn’t try any serious sprints, just a couple of short efforts over rolling hills. Through those efforts the wheels felt very solid and on point.

So far the KCNC Razor discs do not seem suitable for prolonged braking. I didn’t make adjustments to the brake calipers when changing wheels which could help things, as they didn’t rub. The braking feel is quite close to how the discs look like - quite a lot of air between the pads and not much material to hold on to. Braking feels like the pads are hitting the edges in the discs continously, and the edges may be chipping material away from the pads. That could be remedied by sanding the leading edges of the pads to an angle, but I’m not fussed enough to go through that.

It may just be the general feeling of 25mm to 28mm tubeless road tires, but so far I’m not a fan of the riding feel of the Schwalbe Pro Ones. There is this distinct vagueness in them. I prefer the planted and more direct feel of 22-24mm tubulars. Then again my favourite tubular of all time has been the Schwalbe One, so I think Schwalbe knows how to manufacture tires with good riding feel. On less than ideal road surfaces, a certain level of ”disconnect” may be very welcome.

by Weenie


Hexsense
Posts: 562
Joined: Wed Dec 30, 2015 12:41 am

by Hexsense

you got extra tire width and height.
Both make it require more force to lean.
Width is easy to see why.
Height, increase effective Trail value, which also slow down the bike handling.
calculate here: http://yojimg.net/bike/web_tools/trailcalc.php try 25mm tire against 29mm and see.

I also prefer how i feel with Pirelli tires and even Continental tires over the Schwalbe.
Maybe try to overinflate to 65-70psi for a ride and see how you feel?

romanmoser
Posts: 142
Joined: Sun May 06, 2018 8:30 pm

by romanmoser

but then you loose
a big interest of tubeless ready tires
lower pressure without higher rolling resistance , or pinch flat

I don't think it's tire pressure related
but more due to schwalbe compound
they are okayish but not as great as my GP4000S2

Can't speak about pirelli

rasmusic
Posts: 144
Joined: Fri Jul 10, 2009 1:48 am
Location: Norway

by rasmusic

I'm looking for a light set of 40-45 mm carbon clincher rims (U-shaped, around 25 mm wide) to build with Extralite Cyber*-hubs. Any suggestions on the rims? I see Lightbicycle have 45 mm rims at 475 grams, but hopefully there is lighter options?

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Klaster_1
Posts: 419
Joined: Mon Aug 15, 2016 10:25 am
Location: Krasnoyarsk, Russia

by Klaster_1

rasmusic wrote: ↑
Sun Sep 09, 2018 11:29 am
I'm looking for a light set of 40-45 mm carbon clincher rims (U-shaped, around 25 mm wide) to build with Extralite Cyber*-hubs. Any suggestions on the rims? I see Lightbicycle have 45 mm rims at 475 grams, but hopefully there is lighter options?
Light-Bycicle RR46C02 are 460g+/-15 in rim brake version and you can ask LB to pick lightest rims out of several batches if your rim parameters are popular enough, so ~445g should be possible. But it's not exactly an "U-shape" and the width is wider at 28mm. I run these and Cyberhubs in disc flavor, btw.

romanmoser
Posts: 142
Joined: Sun May 06, 2018 8:30 pm

by romanmoser

For informations
My LB disc 56mm rims ultra wide UD matt
weight 459 and 461 gr so they respect weight

unless you're sure you can have the 45mm at 445 gr
i would go for the 56mm if they weight the same as the 45 mm

justinn
Posts: 46
Joined: Sat May 04, 2013 5:34 am

by justinn

I have a 2010 and 2012 Scott Foil and I'm looking at getting two sets of 25mm rims from Farsports, but am trying to confirm that I won't have any clearance issues if I mount 25mm tires and having trouble finding the internal rim width and/or anyone who has had experience with wider rims on earlier Foils. Anyone know if 25mm wide works on Foils or should I stick with 23mm?

rasmusic
Posts: 144
Joined: Fri Jul 10, 2009 1:48 am
Location: Norway

by rasmusic

Thanks, but I don't want the wider V-shaped 46/56-rims from LB, because my bet is that they are less aero than the U-shaped 25mm wide rims.

I'm also gonna build a wheelset with 65-70mm deep front wheel and a 80-90mm deep rear wheel (also carbon clincher). LB's 65mm is the best front alternative I've found so far, but their 88 mm rims are either wider or narrower, so I'm open for other suggestions too?

codytaylor48
Posts: 6
Joined: Wed Oct 18, 2017 1:27 pm

by codytaylor48

Just got my WR56C02's in today!
Very happy with them so far.
1482g with tape installed.Image

GlacialPace
Posts: 50
Joined: Mon Jul 30, 2018 12:37 am

by GlacialPace

I assume you are running them on a disc brake bike. I think they look great and test very well in Hambini's very recently released test. I'd buy a set if I had a disc brake bike but they won't fit in my calipers. I think I am going to go with the WR46C02 instead.

AZR3
Posts: 713
Joined: Wed Sep 12, 2012 9:00 pm
Location: Az USA

by AZR3

Thinking those are gonna be my next wheels set for road riding on my Exploro, they look great and the weight is nice

codytaylor48
Posts: 6
Joined: Wed Oct 18, 2017 1:27 pm

by codytaylor48

Yes, going on my new Exploro Flatmount build.

AZR3
Posts: 713
Joined: Wed Sep 12, 2012 9:00 pm
Location: Az USA

by AZR3

codytaylor48 wrote: ↑
Tue Sep 11, 2018 2:13 am
Yes, going on my new Exploro Flatmount build.
Sweet, post up some pics when you get them mounted up. What tire are you going to run?

codytaylor48
Posts: 6
Joined: Wed Oct 18, 2017 1:27 pm

by codytaylor48

Actually just mounted the rotors. Tires, and cassette.
My frameset is at the painters shop.

This picture is my wheel on a loaner Exploro.

For now I mounted some 34c WTB Exposure's.
3T Bailout cassette and Ultegra 140mm rotors.Image

by Weenie


AZR3
Posts: 713
Joined: Wed Sep 12, 2012 9:00 pm
Location: Az USA

by AZR3

That looks nice, post more when both are mounted

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