Crux 2021

Especially for light weight issues concerning cyclocross / touring bikes & parts.

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ryanw
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by ryanw

So we've both made assumptions but mine is incorrect and yours isn't?

Have you tested the max tyre size you can fit on a Crux?

Thought not.

So are we both wrong or both right?

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SL7 S-Works - 6.59kg
OPEN U.P.P.E.R. - 6.76kg
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by Weenie


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Karvalo
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by Karvalo

[not bothering trying to fix this]

RyanH
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by RyanH

@Karvalo @ryanw

Keep it civil. You both need to learn how to discuss things without making it personal. Next person that can't figure out how to politely disagree will be going on holiday.
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mathias720
Posts: 22
Joined: Tue Oct 19, 2021 8:14 am

by mathias720

Anyone triede the clearence with a 1x sram setup.
i am going for a sram red 8bolt crank with quarq 5bcd 110mm
i ordered a 44T oval chainring(so 46 at biggest point)
and wondering if it will fit? anyone tested it yet or able to help me

Karvalo
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by Karvalo

ryanw wrote:
Wed Oct 27, 2021 11:39 pm
So are we both wrong or both right?
Your assumption that you can figure out the max tyre size on a CruX by by looking at the spec sheet of an Open is wrong.

FlatlandClimber
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by FlatlandClimber

Guys, chill. We'll very soon know the max tire clearance on a crux. Trial and error.
Open WI.DE (2019) - 8.7kg
Specialized Shiv TT Disc (2020) - 7.9kg
Specialized SW Æthos (2021) 6.5kg
Trek Émonda SLR9 (2021) 7.3kg
Specialized SW Crux (2022) 7.9kg

*all weights are race ready bikes, large frame size.
Sold: SW Venge, S5 Disc, Roubaix Team

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ryanw
Posts: 1916
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Location: London

by ryanw

Karvalo wrote:
Thu Oct 28, 2021 8:51 am
ryanw wrote:
Wed Oct 27, 2021 11:39 pm
So are we both wrong or both right?
Your assumption that you can figure out the max tyre size on a CruX by by looking at the spec sheet of an Open is wrong.
And your assumption that you can't potentially fit 2.35" 650B tyres on a Crux is also wrong (since you haven't tested nor provided any evidence), so we're both wrong together :beerchug:
SL7 S-Works - 6.59kg
OPEN U.P.P.E.R. - 6.76kg
www.rhinosworkshop.co.uk
IG: RhinosWorkshop

Gavin929
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Joined: Sun Nov 27, 2011 4:50 am

by Gavin929

My frame should arrive today. I've got my digital calipers ready.

Gavin929
Posts: 46
Joined: Sun Nov 27, 2011 4:50 am

by Gavin929

My frame arrived. The front has 63mm of clearance at the widest part for tires. The rear has 61mm of clearance at the widest point for tires. Hope this helps! I'll be working on cranksets tonight after the kids go to bed!

I'd guess you could fit a 700x50 in there with 5mm clearance on each side.

I'm thinking they said 47mm max because they wanted to leave more room for mud clearance. They did the same thing with the previous crux tire clearance.

Thanks
Gavin

Gavin929
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by Gavin929

tyring to upload a pic of the frame but can't figure out how to do it from my macbook pro. any tips?

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ryanw
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by ryanw

Much appreciated.
I use Flickr for photos :thumbup:
SL7 S-Works - 6.59kg
OPEN U.P.P.E.R. - 6.76kg
www.rhinosworkshop.co.uk
IG: RhinosWorkshop

FlatlandClimber
Posts: 1734
Joined: Tue Mar 31, 2020 3:37 pm

by FlatlandClimber

Gavin929 wrote:
Thu Oct 28, 2021 8:03 pm
My frame arrived. The front has 63mm of clearance at the widest part for tires. The rear has 61mm of clearance at the widest point for tires. Hope this helps! I'll be working on cranksets tonight after the kids go to bed!

I'd guess you could fit a 700x50 in there with 5mm clearance on each side.

I'm thinking they said 47mm max because they wanted to leave more room for mud clearance. They did the same thing with the previous crux tire clearance.

Thanks
Gavin
The problem with a 700c tire usually isn't the clearance on the stays, but clearance to the seat tube.
Open WI.DE (2019) - 8.7kg
Specialized Shiv TT Disc (2020) - 7.9kg
Specialized SW Æthos (2021) 6.5kg
Trek Émonda SLR9 (2021) 7.3kg
Specialized SW Crux (2022) 7.9kg

*all weights are race ready bikes, large frame size.
Sold: SW Venge, S5 Disc, Roubaix Team

RyanH
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by RyanH

I'm kind of scratching my head on this as I almost feel like I installed this wrong but with the Dub Quarq (3mm spacer DS) there's quite a lot of space with a 52/36 (FSA) chainset:

Image

Here's with 50/34 MKV Rings:

Image
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Gavin929
Posts: 46
Joined: Sun Nov 27, 2011 4:50 am

by Gavin929

RyanH wrote:
Thu Oct 28, 2021 11:45 pm
I'm kind of scratching my head on this as I almost feel like I installed this wrong but with the Dub Quarq (3mm spacer DS) there's quite a lot of space with a 52/36 (FSA) chainset:

Image

Here's with 50/34 MKV Rings:

Image
I just tried the newest quarq dub dfour model with shimano dura ace 52/36 chainrings and it does not fit. The inside of the 36 tooth chaining will rub the frame. The teeth clear just fine. It's the actual inside of the chainring that rubs.

Is your crankset the quarq Dzero 5 bolt with 110bcd?

I'm guessing that shimano spaced cranks/chainrings will rub just like mine was with the 3mm spacer installed properly. Again, it's the actual chainring near the bolts that rub and not the teeth that touch.

I'm trying to figure out which crankset to get as I'm not sold on 48/31 grx for the riding I'm going to do. It's mostly the 31 tooth that I would like to be a bit bigger.

by Weenie


Visit starbike.com Online Retailer for HighEnd cycling components
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Gavin929
Posts: 46
Joined: Sun Nov 27, 2011 4:50 am

by Gavin929

mathias720 wrote:
Thu Oct 28, 2021 8:10 am
Anyone triede the clearence with a 1x sram setup.
i am going for a sram red 8bolt crank with quarq 5bcd 110mm
i ordered a 44T oval chainring(so 46 at biggest point)
and wondering if it will fit? anyone tested it yet or able to help me
I've seen a 46 tooth on a red crankset installed on a new crux. You should be fine.

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