50mm aero wheels on gravel bike?

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

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1swiftvelo
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by 1swiftvelo

Go aero. Did Dirtykanza on Roval 64s with no problem. Bombed the decents never worried about the rims.

Fellrunner
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by Fellrunner

I’ve upgraded to 40mm Fulcrum carbon wheels on my CX bike, they look good and ride great.

by Weenie


bm0p700f
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by bm0p700f

if your fitting 40mm gravel tyres to your 50mm deep aero wheels then the aero adavntage is moot anyway. If your fiting 28mm road tyres that different if the rim is 28mm or wider.

AJS914
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by AJS914

I agree. If you are doing a gravel race on well packed gravel roads on narrowish tires then by all means go full aero. I ride my gravel bike on gnarly trails with 40mm tires. I'm not racing so I'd rather go with a 30mm aluminum rim that provides a better bang/buck.

I've had a cracked 404 tubular on my cross bike. I don't buy that carbon rims are tough as nails and you'll have no problems.

dim
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Location: Cambridge UK

by dim

This whole aero thingy gets me confused ....

so.... people buy an aero carbon integrated handlebar for £400 ..... yet they sit semi-upright and once the wind has streamlined around the aero bar, it whacks them straight in their belly ?

then we have the aero wheel story .... weighs more than climbing wheels ... good for going directly into the wind and with the wind pushing you ... do a long loop ride with strong winds and you may be better off with light climbing wheels?

sorry ....I'm old and my son is into aero and tried explaining, ... but I still don't understand .... my experience is that I'm faster on a loop with a light bike

try riding 80 km into a headwind of 30km/hr+ .... if you are not dressed aero, with an aero helmut and aero bars, you will most probably be slower than a climbing bike that weighs a lot less (IMHO)

thats why I'm opting for lightweight climbing wheels as my all rounders
Trek Emonda SL6
Miyata One Thousand

Marin
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Location: Vienna Austria

by Marin

Classic mistake.

jfranci3
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Joined: Tue Jul 26, 2016 5:21 pm

by jfranci3

dim wrote:
Mon Dec 31, 2018 6:06 pm
This whole aero thingy gets me confused ....

so.... people buy an aero carbon integrated handlebar for £400 ..... yet they sit semi-upright and once the wind has streamlined around the aero bar, it whacks them straight in their belly ?

then we have the aero wheel story .... weighs more than climbing wheels ... good for going directly into the wind and with the wind pushing you ... do a long loop ride with strong winds and you may be better off with light climbing wheels?

sorry ....I'm old and my son is into aero and tried explaining, ... but I still don't understand .... my experience is that I'm faster on a loop with a light bike

try riding 80 km into a headwind of 30km/hr+ .... if you are not dressed aero, with an aero helmut and aero bars, you will most probably be slower than a climbing bike that weighs a lot less (IMHO)

thats why I'm opting for lightweight climbing wheels as my all rounders
The aero wheels turn into sails when turned sideways. For a gravel bike with 32mm+ treaded tires, they don't do squat for aero, but they keep sand/mud from grabbing your wheel.

bm0p700f
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by bm0p700f

Really do they turn into sails. How come mine don't.

frogtape777
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by frogtape777

Whats a good lightweight wheelset for 40mm tyres?

jfranci3
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by jfranci3

bm0p700f wrote:
Tue Jan 01, 2019 6:20 pm
Really do they turn into sails. How come mine don't.
They do. Image
At 0deg, on this sample graph, you're at 175gr of drag. At every other angle, the resistance falls (down to -50). The wheel section is acting as a rigid sail https://en.wikipedia.org/wiki/Wingsail , providing a relative 225gr of forward push (in simple concept).

emotive
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Location: Melbourne, Australia

by emotive

frogtape777 wrote:Whats a good lightweight wheelset for 40mm tyres?
Light Bicycle RG922 rims with DT Swiss hubs.

vanmatthew
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Joined: Thu Jul 14, 2016 5:20 am

by vanmatthew

What is the minimal internal diameter you're willing to go for these wheels?

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Noctiluxx
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by Noctiluxx

Folks, I was/am considering 50mm aero wheels mainly due to deep discount I can get on Factor Black Inc. wheels. My preference really would be wheels in the 35-40mm range.
2018 Bianchi Oltre XR4, (Celeste Matt)
2018 De Rosa SK Pininfarina (Blu)
2019 Trek Madone SLR (Rage Red)
2019 Giant TCR Advanced SL (Chameleon Blue)
2019 Giant Revolt Advanced 0

jfranci3
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Joined: Tue Jul 26, 2016 5:21 pm

by jfranci3

I'd only go deep dish because I've got a set of disused road wheels laying around. A shallower dish will give the spokes more room to work, allowing for a better riding bike and laterally stiffer wheel (allowing for more confident handling and less tire rub)
https://www.velonews.com/2018/08/from-t ... ero_474617

That Black company is smoking crack if they want to charge $2k for a CN carbon build. There are better brand name options for the same price.
Have you considered AL wheels? You can get a set of 24mm wide / 32mm deep DT Swiss wheels for $350. They'll cost you 200g total, but you'll pay a lot less, have enough depth to look cool, and can get them a lot dirtier. You can have 2-3 sets of mounted tires for the price of even CN carbon. 200g isn't going to make a big difference on a big tire bike you're covering with mud and extra water bottles.

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