Turbo Cotton vs GP5000 TL on Roval CLX64

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Kvnmil13
Posts: 15
Joined: Wed Jul 31, 2019 12:57 pm

by Kvnmil13

I am running a set of Roval CLX64 wheels on my Venge. I currently running a 23mm Cont. GP4000 on the front. From a speed perspective (aero and rolling resistance) which tire would be the fastest for the front?

24mm Turbo Cotton with a latex tube
25mm Continental GP5000 TL
23mm Continental GP4000 II with latex tube (current)

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Squashednuts
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by Squashednuts

You can check out rolling resistance on this site
https://www.bicyclerollingresistance.com/
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Marin
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by Marin

How wide are the rims at the brake track, and what's the internal width? You want the tire to be narrower than the brake track for best aero.

welchy
Posts: 458
Joined: Wed Jul 01, 2015 4:04 pm

by welchy

Squashednuts wrote:
Mon Sep 02, 2019 9:29 am
You can check out rolling resistance on this site
https://www.bicyclerollingresistance.com/
This should be your reference for sure.. I use 28MM Turbo Cottons, from a ride persepctive very very good..

cpark
Posts: 52
Joined: Mon Oct 05, 2015 10:01 am

by cpark

Kvnmil13 wrote:
Mon Sep 02, 2019 2:10 am
I am running a set of Roval CLX64 wheels on my Venge. I currently running a 23mm Cont. GP4000 on the front. From a speed perspective (aero and rolling resistance) which tire would be the fastest for the front?

24mm Turbo Cotton with a latex tube
25mm Continental GP5000 TL
23mm Continental GP4000 II with latex tube (current)
For a fastest set up, I would use Turbo Cotton 24mm on the front and 26mm on the rear with latex tube.
For a fast set up with a little more punture resistence, I would run GP 5000 25mm on the front and 28mm on the rear.

refthimos
Posts: 411
Joined: Fri May 25, 2012 6:02 pm

by refthimos

cpark wrote:
Mon Oct 07, 2019 1:22 am

For a fastest set up, I would use Turbo Cotton 24mm on the front and 26mm on the rear with latex tube.
What makes you think the Turbo Cotton is faster than the 5000 TL?
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spdntrxi
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by spdntrxi

I'm thinking the 23 GP4000 will end up being the same as a 25 5000TL aero/width wise.. so go with a 25 5000TL.
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alanyu
Posts: 1506
Joined: Thu Jun 06, 2019 1:10 pm

by alanyu

cpark wrote:
Mon Oct 07, 2019 1:22 am
For a fastest set up, I would use Turbo Cotton 24mm on the front and 26mm on the rear with latex tube.
For a fast set up with a little more punture resistence, I would run GP 5000 25mm on the front and 28mm on the rear.
5000TL is faster than 5000, and 5000 is faster than turbo cotton.
https://www.bicyclerollingresistance.co ... ke-reviews

spdntrxi wrote:
Mon Oct 07, 2019 4:01 am
I'm thinking the 23 GP4000 will end up being the same as a 25 5000TL aero/width wise.. so go with a 25 5000TL.
GP5000 25c is more aero than GP4000 23c though they are at a very similar width on the wheel.
https://www.aero-coach.co.uk/gp-5000-data

Imaking20
Posts: 2260
Joined: Fri Nov 18, 2011 5:19 am

by Imaking20

The question isnt just about crr though. People have gotten so obsessed with BRR results now that they seem to be forgetting how many watts can be given back through a bad tire:rim interface.

BRR is definitely one of your key resources - this series is the other
http://bikeblather.blogspot.com/2015/10 ... 1.html?m=1

Edit: I would definitely not make the claim that a 25mm 5000 is faster than a 23mm 4000 in the wind tunnel based off a test on a single, shallow alloy wheel...


My choice would be the Turbo Cotton or maybe a 5000 with latex. I expect the former to ride and handle a lot better, as well as have the lower cda, the latter will probably have the lowest crr

xylar
Posts: 57
Joined: Fri Jul 05, 2019 1:36 pm

by xylar

welchy wrote:
Mon Sep 02, 2019 12:14 pm
Squashednuts wrote:
Mon Sep 02, 2019 9:29 am
You can check out rolling resistance on this site
https://www.bicyclerollingresistance.com/
This should be your reference for sure.. I use 28MM Turbo Cottons, from a ride persepctive very very good..
What are you using for your tubes?

As part of my service, my tyres needed replacing and I swapped to 28 Turbo Cottons. I think they left the original Turbo Ultralight tubes. I've now had a flat and realised that the Ultralights are only suitable up to 25. Not sure whether it would have resulted in the flat or not.

welchy
Posts: 458
Joined: Wed Jul 01, 2015 4:04 pm

by welchy

xylar wrote:
Wed May 05, 2021 11:15 am
welchy wrote:
Mon Sep 02, 2019 12:14 pm
Squashednuts wrote:
Mon Sep 02, 2019 9:29 am
You can check out rolling resistance on this site
https://www.bicyclerollingresistance.com/
This should be your reference for sure.. I use 28MM Turbo Cottons, from a ride persepctive very very good..
What are you using for your tubes?

As part of my service, my tyres needed replacing and I swapped to 28 Turbo Cottons. I think they left the original Turbo Ultralight tubes. I've now had a flat and realised that the Ultralights are only suitable up to 25. Not sure whether it would have resulted in the flat or not.
At the time of writing this I was using Vitorria Latex tubes, now I'm on Silca. I've got rid of the turbo cottons, as good as they were they just cut up far far too easily (the rear). I've gone onto Veloflex 28s and now Conti GP5000s. The veloflexs feel harsher, I used the Vitorria Corsa 28s after which were great but heavy, now I'm on GP5000s. All of the above with Latex. I can't fault the GPs apart from the obvious not feeling as supple..

guadzilla
Posts: 273
Joined: Sat Mar 19, 2011 6:55 pm

by guadzilla

Turbo Cottons and latex tubes on the CLX64s = match made in heaven. Best speed.

For what it is worth, Aerocoach testing found this to be one of the fastest combos as well, leaving aside TT tires.

tabl10s
Posts: 754
Joined: Wed Aug 23, 2017 5:40 am

by tabl10s

guadzilla wrote:
Thu May 06, 2021 9:50 am
Turbo Cottons and latex tubes on the CLX64s = match made in heaven. Best speed.

For what it is worth, Aerocoach testing found this to be one of the fastest combos as well, leaving aside TT tires.
I have Tubolito's and the 64's w/Turbo S. I only have Cotton's on the 32's.
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Yoln
Posts: 965
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by Yoln

You can't compete with Cotton's suppleness and feel. Match them with Latex or Aerothan tubes and you've got an insanely fast and comfortable combo with the 64s
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guyc
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by guyc

Cotton's all day long, and twice on Sundays.

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