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 Post subject: Light pulleys?
PostPosted: Sat Nov 09, 2013 6:21 am 
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Joined: Sun Feb 03, 2008 4:40 pm
Posts: 185
Location: Singapore
I was having a talk with FibreLyte in regards to that I am considering mounting their carbon pulleys on an XX1 rear mech. FibreLyte does however not recommend the use of the carbon pulleys off road due to mud getting stuck in the pulleys leading to excessive wear and tear. Any suggestions on super light weight pulleys which can take some off road (XC) and still hold up well?

Thanks

Seismic


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 Post subject: Re: Ligt pulleys?
PostPosted: Sat Nov 09, 2013 6:48 am 
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Joined: Sat Nov 10, 2007 4:23 am
Posts: 1030
Location: Poland/Toronto
I have not tried FibreLyte, but other carbon pulleys failed. Fall and winter riding. Too much dirt/grass and snow/ice destroyed them. Still have some pics somewhere, will try to post.

About FibreLyte - honest company. I asked abut chainrings to use in MTB. They said no problem, but mentioned they would not last long, depending on conditions. I am still considering getting a small ring from them since it is used less.

Anyway, aluminum pulleys were loud and the color wears off quickly.

AFC pulleys are best from what I have tried yet. Save 10-15g from original pulleys. Did not have good shifting with Di2, but that is a different story. Here original is best.

Overall original pulleys are the best.

Chris.

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MSC Koncept Carbon Di2 - 6955g
Leichtkraft Team Carbon - 6868g.


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 Post subject: Re: Ligt pulleys?
Posted: Sat Nov 09, 2013 6:48 am 


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 Post subject: Re: Ligt pulleys?
PostPosted: Sat Nov 09, 2013 10:16 am 
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Joined: Thu Jan 12, 2006 5:58 pm
Posts: 559
Location: Surrey, UK
The Mt Zoom ultralight ones are excellent, far outlasted SRAM/Shimano ones.


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 Post subject: Re: Light pulleys?
PostPosted: Sat Nov 09, 2013 12:17 pm 
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Joined: Fri May 02, 2008 5:39 pm
Posts: 559
Location: Here, there and everywhere
Aerozine Super Light Ceramic Bearing Jockey Wheels for me.

11g a pair for £20 (ebay) with ceramic bearings.

They look to be the same as the Mt Zoom ones but cheaper and available in colours other than red.

As Njee has said, they far outlast SRAM/ Shimano alternatives both on terms of remaining smooth and also in terms of wear on the teeth (as tested in horrible gritty, muddy British Winters).

They make no noise so there really is no downside. Also they still look good after 2700km so no reason not to IMO.

People also tend to argue that an alu jockey wheel will wear the chain quicker... take a look at what the chainring is made from :wink:

I also like that the large gaps between the "spokes" of the Aerozine/ Mt Zoom design seems to clear mud/ muck/ grass far better than a standard jockey wheel. Overall, light, cheap, long lasting and perform great. Nothing not to like :D


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 Post subject: Re: Light pulleys?
PostPosted: Sat Nov 09, 2013 2:08 pm 
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Joined: Sun Feb 03, 2008 4:40 pm
Posts: 185
Location: Singapore
Aerozine and Mt Zoom sounds good. Never liked how Shimano and SRAM gathers mud on the side. Hopefully this is better. I have to admit though, that in the perfect world, I would prefer carbon. However, seems to be the wrong material for this use, so maybe better to stay with alu.


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 Post subject: Re: Light pulleys?
PostPosted: Sat Nov 09, 2013 11:46 pm 
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Joined: Thu Jan 12, 2006 5:58 pm
Posts: 559
Location: Surrey, UK
I had some carbon ones a few years ago. Killed them in one muddy race.


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 Post subject: Re: Light pulleys?
PostPosted: Sun Nov 10, 2013 1:38 am 
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Joined: Sat Jan 13, 2007 10:24 pm
Posts: 608
Location: Fort St John
The thing that ultimately steered me away from aftermarket pulleys is that my 7800 DuraAce rear derailleur comes with a floating upper pulley, as do many rear derailleurs. I think they do this to help with shifting. It will float side to side a few mm's. Haven't found any aftermarkets that do that.

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Light. Strong. Cheap. Pick one.


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 Post subject: Re: Light pulleys?
PostPosted: Sun Nov 10, 2013 12:07 pm 
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Joined: Fri May 02, 2008 5:39 pm
Posts: 559
Location: Here, there and everywhere
The ones mentioned here already seem no different to the MTB originals and work perfectly...


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 Post subject: Re: Light pulleys?
PostPosted: Sun Nov 10, 2013 1:37 pm 
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Joined: Sun Feb 03, 2008 4:40 pm
Posts: 185
Location: Singapore
Anyone compared the actual weight difference between non-carbon aftermarket pulleys and the standard SRAM XX1 and /or Shimano XTR?


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 Post subject: Re: Light pulleys?
PostPosted: Sun Nov 10, 2013 4:08 pm 
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Joined: Fri May 02, 2008 5:39 pm
Posts: 559
Location: Here, there and everywhere
Aerozine Ceramic 11g a pair (pretty much the best weight you can expect for alu)

Current XTR 20g a pair

Not much weight saved but the function and durability, especially performance in the wet and mud (not to mention cheaper cost!) is much better for Aerozine/ Mt Zoom compared to stock XTR


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 Post subject: Re: Light pulleys?
PostPosted: Mon Nov 11, 2013 1:00 am 
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Joined: Tue Jul 14, 2009 2:18 am
Posts: 210
tested tacx ceramic on my road bike and later transfer to mtb.

Tested hawk racing on my roadbike.

cant feel any diff but i can really feel the different with hawk racing bb on my road bike and token triramic on my mtb


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 Post subject: Re: Light pulleys?
PostPosted: Mon Nov 11, 2013 1:37 am 
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Joined: Tue Jul 14, 2009 2:18 am
Posts: 210
i quote

"You can not compare our pulleys by spinning them in your hands. Our pulleys will not spin in your fingers, because our pulleys are simply to light to spin in the fingers. If you have a pulley that spins well in your fingers, that means you have a heavy pulley with a lot of mass that will move the pulley around. Pretty much the same as a crank set to test our bottom bracket. So you get the wow effect on a bottom bracket because you have a heavy load with a crank set to show the performance. This is not the case on our pulley, so the wow effect is missing. It is the same if you would use our bearings in a skateboard wheel. It simply has not enough load to spin for ever, but as you can see in the friction fact sheet, once installed you get the lowest friction possible."


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 Post subject: Re: Light pulleys?
PostPosted: Tue Nov 12, 2013 10:07 pm 
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Joined: Thu Jan 13, 2011 4:04 pm
Posts: 511
Location: Sunny UK
my take on this is that Shimanoi have got this right - the pulleys that use sealed bearings are not really suitable for dunking into water and mud and will fail - the seal is 100% watertigtht and once water gets in ,teh bearing can seize pretty quckly - something that cannot happen with the bush typoe Shimanos.

having said that, I run various lightweight alloy pulleys, such as AEST and aeorzine but refrain from taking my best bikes when I know the ground is gonna be muddy.


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 Post subject: Re: Light pulleys?
PostPosted: Mon Dec 30, 2013 10:56 pm 
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Joined: Sun Jun 30, 2013 6:05 am
Posts: 32
Well thats weird because Shimano use sealed ball races in the lower jockey wheel on XT RDs but ceramic bush in the upper. Seems to me the lower is more likely to get dunked. Both wheels in my XTR RD on the Scalpel are ballraced.

I've replaced the upper wheels on my 26ers with BBB Rollerboys which have been brilliant from both a rolling resistance and durability perspective. Noticeable improvement in friction.

Sent from my android thingy using Crapatalk


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 Post subject: Re: Light pulleys?
Posted: Mon Dec 30, 2013 10:56 pm 


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 Post subject: Re: Light pulleys?
PostPosted: Mon Dec 30, 2013 11:01 pm 
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Joined: Fri May 02, 2008 5:39 pm
Posts: 559
Location: Here, there and everywhere
Sealed cartridge bearings are used all over the bike. So long as the seal can be lifted, the gunk can be easily cleaned out and the races regreased- There isn't a better option IMO. You can't do too much to maintain or prolong the life of a bush.

The Aerozine pulleys I have been using can be maintained by lifting the seal and have been fantastic in harsh British conditions


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