Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Classic & Vintage This forum is to discuss the many aspects of classic and vintage bicycles, including musclebikes, lightweights, middleweights, hi-wheelers, bone-shakers, safety bikes and much more.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 10-10-06, 09:53 AM   #1
MajorA
Prodigal road guy
Thread Starter
 
MajorA's Avatar
 
Join Date: Jul 2006
Location: Eugene. Oregon
Bikes: '72 Bob Jackson; '82 Austro-Daimler Starleicht; '85 Scapin; '80 Peugeot PKN-10; '81 Trek 610; '87 Hunter Corsa; '72 Italvega and '75 Motobecane Grand Jubillee frames built into freewheel singlespeeds.
Posts: 416
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Dumb Shimano compatability question

My 1987 road bike has the dreaded BioPace chain rings; not knowing any better because I've been on a mountain bike for the last 15 years, they seem fine to me. But I'd like to try convention chain rings, so that I can A/B them with the BioPace.

Here's the question: what brands and models of chain ring can I use with my Shimano 105 cranks? Between the progression from 6-speed freewheels (which is what mine has, with indexed 105 shifters front and back) to 7- and 8-, and now 9- and 10-speed; Shimano's change from Uniglide to Hyperglide; different chain widths; and the possible incompatabilities between 105, 600/Ultegra, and Dura Ace ..... I'm really, really, confused.

Thanks.
MajorA is offline   Reply With Quote
Old 10-10-06, 11:05 AM   #2
SpokesInMyPoop
Ha Ha! Boss.
 
SpokesInMyPoop's Avatar
 
Join Date: Feb 2005
Location: pdx, or
Bikes: Univega custom 14sp mixte + Sears 3sp groceryhoggg
Posts: 879
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
wow... you're asking a lot.

and you're due for quite a response.

maybe you could find something on sheldonbrown.com.

wow. i understand why you're confused, tho. just make like me: don't bother with it and just do it.

wtf?
SpokesInMyPoop is offline   Reply With Quote
Old 10-10-06, 11:27 AM   #3
grolby
Senior Member
 
grolby's Avatar
 
Join Date: Jan 2005
Location: BOSTON BABY
Bikes:
Posts: 9,376
Mentioned: 16 Post(s)
Tagged: 0 Thread(s)
Quoted: 106 Post(s)
Hey, MY 1987 road bike has BioPace rings, too! (Post soon, pending retrieval of photos!) I also have that same 105 group.

I've only done a few miles on this bike so far, but I'm pretty happy with the rings. They feel fine to me. Why bother swapping them out? But if you must, here's the deal: don't worry about it. Just match up the BCD, and you're good to go. For 105, it should be 130mm, but it might be 110. I don't know what BCD sizes BioPace came in. So make sure you know what it is. Other than that, don't worry about it. You can use whatever brand of chainring you want. The only possible issue is that 10-speed chain may wedge itself in-between the two rings, but I don't think that this is terribly likely. I'm using old cranks and chainrings from the 6-speed era with 8-speed equipment, with not even a hint of trouble. Obviously, not the same as 9 or 10-speed on the same rings, but from what I hear, problems are pretty few and far between.
grolby is offline   Reply With Quote
Old 10-10-06, 11:27 AM   #4
John E
feros ferio
 
John E's Avatar
 
Join Date: Jul 2000
Location: www.ci.encinitas.ca.us
Bikes: 1959 Capo; 1980 Peugeot PKN-10; 1981 Bianchi; 1988 Schwinn KOM-10;
Posts: 17,300
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 135 Post(s)
The primary concern is bolt circle diameter, which is probably either modern Shimano road standard (130mm) or old school mountain (110mm). Both are very easy to find.
__________________
"Early to bed, early to rise. Work like hell, and advertise." -- George Stahlman
Capo [dschaw'-poe]: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger, S/N 42624
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1981 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
John E is offline   Reply With Quote
Old 10-10-06, 12:36 PM   #5
clayface
Pedalpower
 
clayface's Avatar
 
Join Date: Apr 2004
Bikes:
Posts: 369
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I think that in '87 Shimano still had the Uniglide freehub bodies around. Finding a replacement cassette for the old system is very, very difficult so IMO prior to a chainring overhaul, I'd go for a 7sp freehub replacement since 7sp casettes are easy to get. Or if you want to keep the original 6sp shifters, by using a spacer, you can use only 6 cogs from the newer cassettes. Of course, this will convey a redishing of the wheel and a respacing of the axle.
clayface is offline   Reply With Quote
Old 10-10-06, 02:04 PM   #6
cyclotoine
Senior Member
 
cyclotoine's Avatar
 
Join Date: Jul 2004
Location: Yukon, Canada
Bikes:
Posts: 8,609
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 49 Post(s)
Your question is confusuing and you need to break down into a serious of numbered questions for which a definate answer will be. As most have said just swaping out the rings with any other kind as long as the BCD is the same will be fine. Of course you do not want to buy new expensive shimano 10-speed rings, there is no point. By some other aftermarket brand. 10 speed and even 9 speed rings are thinner and will wear quicker. If you are running a 9-10 speed set up you will want 9/10 specific rings. You may also be able to get more help with a question like this in the mechanics forum.
__________________
1 Super Record bike, 1 Nuovo Record bike, 1 Pista, 1 Road, 1 Cyclocross/Allrounder, 1 MTB, 1 Touring, 1 Fixed gear
cyclotoine is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 05:34 PM.