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PostPosted: Thu Sep 05, 2013 9:52 pm 
Retro Guru

Joined: Sun Jun 16, 2013 2:57 pm
Posts: 1302
Location: Porto / Plymouth
Hi, I have another bunch of novice questions. I don't know what we did before the internet - information was seriously difficult to find out back then.

1. What does BCD refer to when people discuss chainrings, and how do you know which BCD your chainset uses?

2. It is still possible to buy reasonably priced anodized chainrings, new?


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PostPosted: Thu Sep 05, 2013 10:02 pm 
Retro Guru
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Joined: Fri Aug 09, 2013 5:59 pm
Posts: 296
Location: Southern CA, U.S.
BCD = Bolt Circle Diameter

Certainly Not a stupid question. I recently had to research this myself. Here are some references with additional details.

http://sheldonbrown.com/gloss_bo-z.html
http://www.spadout.com/a/bolt-circle-di ... the-crank/


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PostPosted: Fri Sep 06, 2013 2:15 am 
Gold Trader / MacRetro rider
Gold Trader / MacRetro rider
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Joined: Sun May 25, 2008 11:03 am
Posts: 18218
Location: Sunny Glasgow
ultrazenith wrote:
Hi, I have another bunch of novice questions. I don't know what we did before the internet - information was seriously difficult to find out back then.

1. What does BCD refer to when people discuss chainrings, and how do you know which BCD your chainset uses?

2. It is still possible to buy reasonably priced anodized chainrings, new?


Alleged answers.
1. Diameter the bolt holes are from the center .Sub Answer II -Use a ruler (with the exception of the house of Wied which is extinct).

2. You need to keep watching this thread- viewforum.php?f=16
Plus places like CRC ,wiggle,ribble,merlin etc etc not forgetting ebay of course.

CRC recently had a sell off of nice ano middleburn rings in lovely anodized colours, i got 2, One outer 46t purple 94mm BCD(compact drive) + one middle 36t purple 94mm BCD for the princely sum of just under £14 new. Now i dont have a CD set of cranks but thats not worthy of consideration :lol:


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PostPosted: Fri Sep 06, 2013 2:54 am 
retrobike rider
retrobike rider

Joined: Thu Apr 17, 2008 1:24 am
Posts: 7563
Location: Manchester
1. http://sheldonbrown.com/gloss_bo-z.html


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PostPosted: Sat Sep 07, 2013 1:08 pm 
Old School Hero
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Joined: Tue Apr 24, 2012 9:07 pm
Posts: 222
Location: Little Scotland
Glad I found this thread. My stupid question is: what does BSO mean? I know it's used to describe a low quality bicycle, but what does it actually stand for?

Regards

Marge


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PostPosted: Sat Sep 07, 2013 1:10 pm 
Retro Guru
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Joined: Sun Jun 05, 2011 9:41 pm
Posts: 365
Location: WEST MIDLANDS
B= bike S=shaped O=object BSO


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PostPosted: Thu Sep 26, 2013 5:10 am 
Retro Guru
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Joined: Wed Feb 20, 2013 12:35 am
Posts: 1006
Location: mostly in my backgarden building my shed
bso = bog standard offering
flexstems no.... softride yes


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PostPosted: Thu Sep 26, 2013 6:11 am 
Retro Guru
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Joined: Sun Dec 18, 2005 10:44 am
Posts: 461
Location: Vancouver
What was so special about a Yeti FRO from the late 80's? I remember drooling over them BITD but never pulled the trigger on one because they seemed to have a geometry from 1982 (or more accurately I didn't have the money).

Despite the question it is still the closest I have to a 'unicorn', but I never see them up here. I can't help but think I'd be sorely disappointed if I ever got hold of one, but it'd probably make a cool cruiser (much to the horror of most people on here :D )


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PostPosted: Mon Oct 07, 2013 2:54 pm 
Retro Guru

Joined: Sun Jun 16, 2013 2:57 pm
Posts: 1302
Location: Porto / Plymouth
1. Which year saw discs replace cantis / v-brakes?

2. Which year saw front suspension come as standard on MTBs?

I ask because I have probably just wrecked my retro frame and I'm doing a bit of brainstorming about how to replace it. Ideally I'd want a rigid frame and forks, which would allow me to re-use the good bits of my current build.


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PostPosted: Mon Oct 07, 2013 9:23 pm 
Retro Guru

Joined: Sun Aug 07, 2011 10:55 am
Posts: 2922
Location: Dorset
Be gentle with me on this :P

Tange as in the frame spec.

Is it pronounced


Like Fang ???

Like Tangy ???

or

Like orange ???

:oops: :oops:


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