Talk to me about ec...
 

[Closed] Talk to me about eccentric bottom brackets.

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Can you get a square taper standard diameter eccentric bottom brackets?


 
Posted : 19/01/2011 9:50 am
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Don't think so - there wouldn't really be room for it inside the BB shell which is why it works with external bearing BBs


 
Posted : 19/01/2011 9:52 am
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Yes, they do exist, but I don't know of the name of any which doesn't really help 🙂


 
Posted : 19/01/2011 9:53 am
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Phil Wood does a half link EBB - the ti frames Singular makes has them. They're very nice indeed.
For a conventional BB shell, Clubber's spot on. ISIS BBs (Certainly the early ones - I gave up on ISIS a long time back) suffered from lack of space - the axle was bigger, and the shell the same size, so the bearings had to fit into a smaller space, and lasted far less time than the old square taper bearings.
You can get an EBB-alike that fits a normal BB - it uses external bearings, so you'll need to use an external bearing crankset. Trickstuff.de makes them, as does another company whose name I forget.
[img] [/img]
hopefully that pic is self-explanatory. You can buy them [url= http://www.singlespeed.nl/catalog/product_info.php?manufacturers_id=65&products_id=216 ]here[/url] for 159 Euros.
Frankly, unless you really love the frame in question, it might make more sense to get an ebb bike. I sold a Genesis Io and my beloved DeKerf Generation a year ago and bought a Singular Hummingbird to do both jobs for £430, and love it.


 
Posted : 19/01/2011 10:25 am
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[b][u][url= http://www.forwardcycle.com/ ]Forward Components[/url][/u][/b] was going to make a square taper, but so far all they make is an external EBB.

[u][b][url= http://www.philwood.com/products/bbpages/eccentric.php ]Phil Wood[/url]
[/b][/u] also makes an external EBB (Philcentric).

As Clubber says, for it to work inside a standard shell, there would be compromises on the bearing sizes. They'd be too small for the sort of use they'd get unless they were of extremely high quality which would put the part into a price range that no-one would pay for.


 
Posted : 19/01/2011 10:25 am
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Ohhh... how much is a Philcentric then? Does it have the same adjustability as the Forward Components version?


 
Posted : 19/01/2011 10:29 am
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Epicyclo - didn't realise Phil did one, too!


 
Posted : 19/01/2011 10:31 am
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I've got a Royce Ti square taper BB on my Pegasus (Phil Wood half link EBB). Fit & forget.

[img] [/img]


 
Posted : 19/01/2011 10:32 am
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[b][u][url= http://www.bikerumor.com/2010/10/28/interbike-2010-phil-wood-eccentric-bb-for-standard-threaded-frames-and-more/ ]Phil Wood eccentric EBB[/url][/u][/b]

The Philcentric requires special tools which will only be provided to bike shops, so obviously setup is critical.

Pedalhead, your frame has the provision for an EBB, the discussion is for an EBB that will fit in a standard BB shell. Nice bike btw.


 
Posted : 19/01/2011 10:49 am
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Ah, so not that useful to the layman then... sexy looking bit of kit though...


 
Posted : 19/01/2011 10:58 am
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Pedalhead, your frame has the provision for an EBB, the discussion is for an EBB that will fit in a standard BB shell. Nice bike btw

yeah just realised that cheers 🙂


 
Posted : 19/01/2011 10:59 am