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 Post subject: 130BCD 52/36...?
PostPosted: Sun Mar 10, 2013 11:35 am 
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in the industry

Joined: Wed May 28, 2008 12:15 pm
Posts: 734
so a friend of mine wants to try semi-compact rings but not ready to replace the current crank yet.
I wonder if there is any 130BCM 52/36 rings out there? the smallest i can find is 52/38.
much appreciated :idea:

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 Post subject: Re: 130BCD 52/36...?
PostPosted: Sun Mar 10, 2013 11:45 am 
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Joined: Sat Jun 12, 2004 8:49 am
Posts: 2181
Location: Denmark
Rotor makes 50 and 52 rings in 130, but I think 38 is the lowest you can go on 130bcd. You would need a smaller bolt diameter to go lower.


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 Post subject: Re: 130BCD 52/36...?
PostPosted: Sun Mar 10, 2013 12:54 pm 
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Joined: Thu May 29, 2008 12:22 am
Posts: 605
It isn't physically possible to fit a standard 36 tooth chainring on a 130bcd, sorry :(


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 Post subject: Re: 130BCD 52/36...?
PostPosted: Sun Mar 10, 2013 1:03 pm 
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Joined: Fri May 25, 2007 6:43 pm
Posts: 2711
Try something like a 105 compact, i paid under €100 for mine. Not a huge amount more than two good quality 130bcd rings (which would be around €60-70).
Tiagra is cheaper, but heavy enough to distort the curve of local space-time ;)


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 Post subject: Re: 130BCD 52/36...?
PostPosted: Sun Mar 10, 2013 2:23 pm 
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Joined: Wed May 28, 2008 12:15 pm
Posts: 734
ok thanks for the help guys.

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 Post subject: Re: 130BCD 52/36...?
PostPosted: Thu Mar 14, 2013 2:20 pm 
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Joined: Mon Mar 12, 2012 4:43 pm
Posts: 333
I wonder what you are up to? I new NEO build option?


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 Post subject: Re: 130BCD 52/36...?
PostPosted: Thu Mar 14, 2013 4:29 pm 
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Joined: Wed May 28, 2008 12:15 pm
Posts: 734
it's not for my project. by "a friend" I actually mean a friend..not the kind of "friend" when you talk to a shrink :wink:
He is about to upgrade groupset on his Venge from old Red to 9070. Decided to go with Gravitas crank but not sure what BCD.
He likes how standard rings ride but is tempted to try semi compact. It would be nice if 52/36 is available for 130BCD.

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 Post subject: Re: 130BCD 52/36...?
PostPosted: Thu Mar 14, 2013 4:36 pm 
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Joined: Mon Mar 12, 2012 4:43 pm
Posts: 333
LOL. I agree it would be nice. I searched high and low for a 52/36 combo in 130BCD; alas, I gave up and purchased a 110BCD spider for the SLSI ... still on the hunt for the best (performance:cost) combo to install.


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 Post subject: Re: 130BCD 52/36...?
PostPosted: Fri Mar 15, 2013 2:18 am 
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Joined: Thu Nov 03, 2011 2:53 am
Posts: 43
Location: Adelaide, Australia
I've got 52/36 Q Rings on my 130BCD Dura-Ace 7800 cranks...

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2011 Scott Addict R3 (DA groupset, Tune Skyline RR wheelset, Rotor 52/36 Q-Rings)
2008 Giant Trinity A1 (cheapass 50mm carbon clinchers)
No easy road goes anywhere worth going


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 Post subject: Re: 130BCD 52/36...?
PostPosted: Fri Mar 15, 2013 7:49 am 
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Joined: Fri May 25, 2007 6:43 pm
Posts: 2711
SpoonMan wrote:
I've got 52/36 Q Rings on my 130BCD Dura-Ace 7800 cranks...
No you don't.


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 Post subject: Re: 130BCD 52/36...?
PostPosted: Fri Mar 15, 2013 8:42 am 
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Joined: Fri Sep 23, 2005 6:34 pm
Posts: 553
Location: Insjön, SWEDEN
I make rings for a living and there´s no possibility to fit anything less than a 38 on a 130BCD crankset, especially not oval.
110 is around 33 as lowest.

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 Post subject: Re: 130BCD 52/36...?
PostPosted: Sat Mar 16, 2013 12:36 am 
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Joined: Thu May 29, 2008 12:22 am
Posts: 605
:exactly:


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 Post subject: Re: 130BCD 52/36...?
PostPosted: Mon Mar 18, 2013 10:02 am 
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Joined: Thu Apr 01, 2010 10:24 am
Posts: 599
Yeah the other thing that people forget on that basis is that the the smallest Osymetric or Rotor Q ring you can get on a given BCD is larger than a round ring, because the smallest diameter section of the ring can only be 38T or 33T for 130 and 110 BCD respectively. So for instance 42T is the smallest Osymetric you can get on a 130BCD crankset - it's 38T at the smallest diameter and 46T at the largest, so 42T average. Sorry if I lost some people...


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 Post subject: Re: 130BCD 52/36...?
PostPosted: Mon Mar 18, 2013 2:56 pm 
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Joined: Mon Mar 12, 2012 4:43 pm
Posts: 333
Yep, I am lost but that is okay ... learned something new (once I sort out what you said).


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There are no new unread posts for this topic. Looking for a 46T 130BCD chainring compatible with 11s Di2

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