The Different Big Pulley Systems advice

Discuss light weight issues concerning road bikes & parts.
Renne
Posts: 69
Joined: Sun Nov 13, 2011 10:06 pm

by Renne

I used the Fouriers system for a while, I liked it. But got damaged and haven't replaced it by another big pulley system as my Tacx Flux does not have clearance for big pulleys.

mike
Resident Pro
Posts: 2453
Joined: Tue Mar 18, 2003 9:42 pm

by mike

I have 3 sets of fouriers, can sell at a good price. just pm me. 15t systems, ceramic.

UpFromOne
Posts: 693
Joined: Wed Apr 08, 2009 5:23 am
Location: Olympic Nat'l Park, WA

by UpFromOne

I cut my cage from carbon plate, added hardware from my SRAM derailleur, including the upper cage spindle that enters the derailleur body (it just bolts on btw), and bought some 16t Digirit carbon wheels that spin like crazy. Whether in the real world these big pulleys make any diff I still don't know, but it was just another fun fab project.

CEVelo
Posts: 89
Joined: Tue Mar 24, 2015 5:22 pm

by CEVelo

This is just beyond ugly on any bike. I'd live without the 0.2 watt gain. Just do an extra few sets on the rollers or loose a pound weight.
I like any and all new bike tech, but can't get past the redicoulous look of these YUUGE pulley wheels. Each to their own.

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TonyM
Posts: 2160
Joined: Thu Jan 22, 2015 4:11 pm

by TonyM

+1

Look extremely ugly. For that look I would need at least 10W

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toiyuet
Posts: 169
Joined: Wed Dec 14, 2011 2:47 pm
Location: Hong Kong

by toiyuet

+2

guyc
Posts: 413
Joined: Thu Mar 24, 2011 9:40 am
Location: Hampshire, England
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by guyc

+3

Along with probably the least value of any ‘upgrade’.

Marin
Posts: 2746
Joined: Wed Jan 22, 2014 11:48 am
Location: Vienna Austria

by Marin

UpFromOne wrote:
Sat Jan 06, 2018 7:39 am
I cut my cage from carbon plate, added hardware from my SRAM derailleur, including the upper cage spindle that enters the derailleur body (it just bolts on btw),
How did you manage to remove the spindle??? I've been trying but no joy :(

vamoots58
Posts: 29
Joined: Mon Feb 17, 2014 1:46 am

by vamoots58

dgasmd wrote:
Thu Jan 04, 2018 11:49 pm
While I begin my search, is there a version of these things for Campy?
Ceramic Speed just launched their oversize system for Campy, works for both mechanical and EPS...want one...don't need one...want one!!

Seedster
Posts: 309
Joined: Fri Jun 05, 2015 11:05 pm

by Seedster

I would never spend the money on it. The gains are negligible, it's extremely expensive, and situated in a very vulnerable spot. No thanks

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TonyM
Posts: 2160
Joined: Thu Jan 22, 2015 4:11 pm

by TonyM

How much gains in watts at which speed are claimed actually?


EDIT: just checked and CeramicSpeed claims 2.4 Watts....

C36
Posts: 219
Joined: Fri Mar 03, 2017 3:24 am

by C36

The gain is neither on the size (0.25w from 11-11 to 15-15) or on the bearing (0.3 to 0.7 takin the extremes), but on the tension the cage applies on the system as well as their geometry where you have more than 1w of savings.
Could you obtain the majority of the gains with good ceramic bearings and a weaker cage spring? Yes and that would cost a fraction of the price.
Ultimately that's "interesting" but an absurd, ridiculous, expensive mod. The gains in a chain properly lubricated are way bigger and cost "nothing"



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Last edited by C36 on Sun Jan 07, 2018 2:34 pm, edited 1 time in total.

guyc
Posts: 413
Joined: Thu Mar 24, 2011 9:40 am
Location: Hampshire, England
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by guyc

1 watt. Like anyone could possibly notice that.

It’s a vanity buy.

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