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


Go Back   > >

Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

User Tag List

Reply
 
Thread Tools Search this Thread
Old 01-21-10, 08:00 PM   #1
letsgetsandy
good friends dont
Thread Starter
 
Join Date: Aug 2009
Location: San Diego
Bikes: Zullo Custom Track
Posts: 156
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Campagnolo recto chainring?

so I just got one of the older 151bcd campagnolo recto Chainrings.It's one of the thicker (7mm thick) pista chainrings. does anyone know anything about them? I only know that the are called a recto from this site http://www.bikecult.com/works/chainring.html. any help would be cool
letsgetsandy is offline   Reply With Quote
Old 01-21-10, 08:11 PM   #2
JohnDThompson 
Old fart
 
JohnDThompson's Avatar
 
Join Date: Nov 2004
Location: Appleton WI
Bikes: Several, mostly not name brands.
Posts: 18,100
Mentioned: 41 Post(s)
Tagged: 0 Thread(s)
Quoted: 712 Post(s)
What do you need to know? They stopped making about 1970 or so. Shimano and Sugino also made cranks that used the 151mm BCD at that time.
JohnDThompson is offline   Reply With Quote
Old 01-21-10, 08:13 PM   #3
TejanoTrackie 
Veteran Racer
 
TejanoTrackie's Avatar
 
Join Date: Jul 2009
Location: Ciudad de Vacas, Tejas
Bikes: 29 frames + 73 wheels
Posts: 10,840
Mentioned: 17 Post(s)
Tagged: 0 Thread(s)
Quoted: 476 Post(s)
Yeah, I have a 50T one. It fits a 151 bcd early 1970s Campy Pista crank arm. The word "recto" in Italian means "right side", so maybe they just mean you are looking at the right side crank arm.
TejanoTrackie is offline   Reply With Quote
Old 01-21-10, 08:21 PM   #4
letsgetsandy
good friends dont
Thread Starter
 
Join Date: Aug 2009
Location: San Diego
Bikes: Zullo Custom Track
Posts: 156
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
just was wondering if there was any problems with them or not? just a general history behind them? or why they would make a chainring thicker? sorry for being interested in why companies do things and the history of bike parts and such
letsgetsandy is offline   Reply With Quote
Old 01-21-10, 08:42 PM   #5
LoRoK
a.k.a. QUADZILLA
 
LoRoK's Avatar
 
Join Date: May 2007
Location: Denver
Bikes: Super Pista, Basso, Big Dummy
Posts: 1,505
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I don't know nothin' bout nothin' but I'm always happy to tool around at bikecult for a while. Pretty stuff!
LoRoK is offline   Reply With Quote
Old 01-21-10, 09:08 PM   #6
TejanoTrackie 
Veteran Racer
 
TejanoTrackie's Avatar
 
Join Date: Jul 2009
Location: Ciudad de Vacas, Tejas
Bikes: 29 frames + 73 wheels
Posts: 10,840
Mentioned: 17 Post(s)
Tagged: 0 Thread(s)
Quoted: 476 Post(s)
Quote:
Originally Posted by letsgetsandy View Post
just was wondering if there was any problems with them or not? just a general history behind them? or why they would make a chainring thicker? sorry for being interested in why companies do things and the history of bike parts and such
First off, the chainring is not 7mm thick, it is only about 3.6mm thick, same as Sugino and Shimano at that time. The Campy chainring has a shoulder on the inside, which is lacking in the other brands to further stiffen and stengthen the chainring just below the teeth. You will find this type of shoulder to a lesser extent in some high end modern chainrings such as the Sugino 75. Modern chainrings use a smaller 144 bcd, so they are thicker, more like 4.0mm.
TejanoTrackie is offline   Reply With Quote
Old 01-22-10, 01:21 PM   #7
letsgetsandy
good friends dont
Thread Starter
 
Join Date: Aug 2009
Location: San Diego
Bikes: Zullo Custom Track
Posts: 156
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
actually I measured it and it is. it is double thick compared to the other campagnolo chainring I have. dont be so condescending mr "veteran racer" you pretentious FU(K. so if you dont have anything to say about the chainring I am talking about stfu.
letsgetsandy is offline   Reply With Quote
Old 01-22-10, 01:24 PM   #8
LoRoK
a.k.a. QUADZILLA
 
LoRoK's Avatar
 
Join Date: May 2007
Location: Denver
Bikes: Super Pista, Basso, Big Dummy
Posts: 1,505
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Whoa! Who pissed in your cheerios today? What a dick.
LoRoK is offline   Reply With Quote
Old 01-22-10, 01:37 PM   #9
norskagent
car dodger
 
norskagent's Avatar
 
Join Date: Aug 2005
Location: garner/raleigh nc
Bikes:
Posts: 3,367
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
take it to ss&fixed, they speak your language, unlike here at c&v.
__________________
1989 Schwinn Paramount OS
1980 Mclean/Silk Hope Sport Touring
1983 Bianchi pista
1976 Fuji Feather track
1979 raleigh track
"I've consulted my sources and I'm pretty sure your derailleur does not exist"
norskagent is offline   Reply With Quote
Old 01-22-10, 01:43 PM   #10
TejanoTrackie 
Veteran Racer
 
TejanoTrackie's Avatar
 
Join Date: Jul 2009
Location: Ciudad de Vacas, Tejas
Bikes: 29 frames + 73 wheels
Posts: 10,840
Mentioned: 17 Post(s)
Tagged: 0 Thread(s)
Quoted: 476 Post(s)
Quote:
Originally Posted by norskagent View Post
take it to ss&fixed, they speak your language, unlike here at c&v.
Actually, this post is in SSFG, but the OP also cross-posted in C&V and Track subforums. OP is either a troll or truly mental.
TejanoTrackie is offline   Reply With Quote
Old 01-22-10, 06:19 PM   #11
chi-james 
Senior Member
 
chi-james's Avatar
 
Join Date: Sep 2009
Bikes: team miyata, '73 p-14, MB-3, centurion lemans, Mystery TT, mongoose atb '85
Posts: 359
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Quote:
Originally Posted by letsgetsandy View Post
actually I measured it and it is. it is double thick compared to the other campagnolo chainring I have. dont be so condescending mr "veteran racer" you pretentious FU(K. so if you dont have anything to say about the chainring I am talking about stfu.
7mm thick? that's almost as dense as your post.
chi-james is offline   Reply With Quote
Old 01-22-10, 10:36 PM   #12
JohnDThompson 
Old fart
 
JohnDThompson's Avatar
 
Join Date: Nov 2004
Location: Appleton WI
Bikes: Several, mostly not name brands.
Posts: 18,100
Mentioned: 41 Post(s)
Tagged: 0 Thread(s)
Quoted: 712 Post(s)
Quote:
Originally Posted by letsgetsandy View Post
actually I measured it and it is. it is double thick compared to the other campagnolo chainring I have. dont be so condescending mr "veteran racer" you pretentious FU(K. so if you dont have anything to say about the chainring I am talking about stfu.
Ok. Is this for 1" pitch chain, perhaps?

A picture would be nice...
JohnDThompson is offline   Reply With Quote
Old 01-22-10, 10:51 PM   #13
kyselad
extra bitter
 
kyselad's Avatar
 
Join Date: Apr 2006
Bikes: Miyata 210, Fuji Royale II, Bridgestone Kabuki, Miyata Ninety
Posts: 1,563
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
If you're going to be such a d-bag, you could at least spend half a second to note that the "recto" image has a matching "verso" on the bike cult site; recto refers to the (right/outboard) side being photographed. Google would have gotten you the rest of the way.

Then again, maybe you're just trolling.
kyselad is offline   Reply With Quote
Old 01-24-10, 05:25 PM   #14
TL179
Senior Member
 
Join Date: Mar 2008
Location: Montreal Quebec, Plateau
Bikes: 91 bridgestone rb-2, Univega viva sport, 04 masi Nouva Strada,Dave Scott Ironman, Changes like every month
Posts: 360
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I want advice, wait **** your advice maaaaan
TL179 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 11:37 PM.


 
  • Ask a Question
    get answers from real people!
Click to start entering your question.
I HAVE A QUESTION