Go Back  Bike Forums > Bike Forums > Classic & Vintage
Reload this Page >

Purpose of (big) hole in chainstay

Search
Notices
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.

Purpose of (big) hole in chainstay

Thread Tools
 
Search this Thread
 
Old 12-19-18, 02:45 PM
  #1  
Senior Member
Thread Starter
 
Join Date: Jan 2014
Location: PNW
Posts: 1,524

Bikes: One of everything and three of everything French

Mentioned: 51 Post(s)
Tagged: 0 Thread(s)
Quoted: 463 Post(s)
Liked 336 Times in 213 Posts
Purpose of (big) hole in chainstay

Insidious C. is offline  
Old 12-19-18, 02:48 PM
  #2  
Senior Member
Thread Starter
 
Join Date: Jan 2014
Location: PNW
Posts: 1,524

Bikes: One of everything and three of everything French

Mentioned: 51 Post(s)
Tagged: 0 Thread(s)
Quoted: 463 Post(s)
Liked 336 Times in 213 Posts
Saw bike while browsing for sale ads. Not mine. Just curious about what looks like big brazed in bung hole.

Last edited by Insidious C.; 12-19-18 at 02:59 PM. Reason: Fat fingers
Insidious C. is offline  
Old 12-19-18, 03:00 PM
  #3  
Senior Member
 
CliffordK's Avatar
 
Join Date: Nov 2014
Location: Eugene, Oregon, USA
Posts: 27,547
Mentioned: 217 Post(s)
Tagged: 0 Thread(s)
Quoted: 18373 Post(s)
Liked 4,508 Times in 3,351 Posts
Odd.

Do you know how old the frame is?

On the DS side, perhaps a speedometer or cadence meter.
CliffordK is offline  
Old 12-19-18, 03:05 PM
  #4  
Senior Member
Thread Starter
 
Join Date: Jan 2014
Location: PNW
Posts: 1,524

Bikes: One of everything and three of everything French

Mentioned: 51 Post(s)
Tagged: 0 Thread(s)
Quoted: 463 Post(s)
Liked 336 Times in 213 Posts
Originally Posted by CliffordK
Do you know how old the frame is?....
Guessing early 80s. Racing geometry.
Insidious C. is offline  
Old 12-19-18, 03:59 PM
  #5  
Senior Member
 
P!N20's Avatar
 
Join Date: Aug 2010
Location: Wurundjeri Country
Posts: 2,469
Mentioned: 32 Post(s)
Tagged: 0 Thread(s)
Quoted: 1079 Post(s)
Liked 1,899 Times in 931 Posts
Assuming there is one on the other chainstay, and they're both threaded, could it be for a kick stand mounting plate?
P!N20 is offline  
Old 12-19-18, 05:31 PM
  #6  
Senior Member
 
Buellster's Avatar
 
Join Date: Jun 2018
Posts: 733
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 213 Post(s)
Likes: 0
Liked 6 Times in 5 Posts
Hey I know that bike! Haha
Secrets(of location etc.) safe with me. I too have been eyeballing the ad wondering if it's worth it. Dont worry I'm passing, I have too many bikes and not enough space for another project. Honestly I have been looking at it out of curiosity more than anything, trying to tell what quality it is I mean. I hope you get it and share with us what it ends up being.
I too noticed the hole and assumed it was a drain hole? I know it's not quite in the right spot but that's all I could figure. I'm by no means an expert though.
Good luck!
Buellster is offline  
Old 12-19-18, 05:58 PM
  #7  
Senior Member
 
bikemig's Avatar
 
Join Date: Apr 2012
Location: Middle Earth (aka IA)
Posts: 20,435

Bikes: A bunch of old bikes and a few new ones

Mentioned: 178 Post(s)
Tagged: 0 Thread(s)
Quoted: 5888 Post(s)
Liked 3,471 Times in 2,079 Posts
Threaded? Racing bike? Maybe it was for a CO 2 cartridge?
bikemig is offline  
Old 12-19-18, 06:08 PM
  #8  
Senior Member
 
Velo Mule's Avatar
 
Join Date: Dec 2016
Location: Long Island, NY
Posts: 2,109

Bikes: Trek 800 x 2, Schwinn Heavy Duti, Schwinn Traveler, Schwinn Le Tour Luxe, Schwinn Continental, Cannondale M400 and Lambert, Schwinn Super Sport

Mentioned: 14 Post(s)
Tagged: 0 Thread(s)
Quoted: 809 Post(s)
Liked 1,022 Times in 665 Posts
I've got to agree with CliffordK, in my opinion. That if the hole is on the drive side only it is for a cadence meter.
Velo Mule is offline  
Old 12-19-18, 06:18 PM
  #9  
Senior Member
Thread Starter
 
Join Date: Jan 2014
Location: PNW
Posts: 1,524

Bikes: One of everything and three of everything French

Mentioned: 51 Post(s)
Tagged: 0 Thread(s)
Quoted: 463 Post(s)
Liked 336 Times in 213 Posts
Buellster, it looks slightly big for me. Plus I bought the Legge so it's your turn.

I don't t think this one pencils out value-wise however.

Last edited by Insidious C.; 12-19-18 at 06:39 PM.
Insidious C. is offline  
Old 12-19-18, 07:05 PM
  #10  
Senior Member
 
Buellster's Avatar
 
Join Date: Jun 2018
Posts: 733
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 213 Post(s)
Likes: 0
Liked 6 Times in 5 Posts
Originally Posted by Insidious C.
Buellster, it looks slightly big for me. Plus I bought the Legge so it's your turn.

I don't t think this one pencils out value-wise however.
that's right! How did the Legge end up treating you? Or your pocket book if it was a resale? Haha
I'll likely end up passing, unless it sits long enough for the price to drop a good number. I also dont think the value is worth it right now. Most Cinelli frames I've seen have more signs of high quality like artsy BB drain holes and chrome stays, I fear this one is a lower grade. Could be a fun project but not for the price it is now.
I think it is exactly my size. Which is why I've been eyeing it. Anything that may be (somewhere near) high end in 60cm+ catches my attention around here.
Buellster is offline  
Old 12-20-18, 12:03 AM
  #11  
Senior Member
 
Chombi1's Avatar
 
Join Date: Nov 2015
Posts: 4,485
Mentioned: 102 Post(s)
Tagged: 0 Thread(s)
Quoted: 1639 Post(s)
Likes: 0
Liked 829 Times in 538 Posts
Guys notice the brazed on cable guides on the top of the BB shell? Not a guaranteed sign of an older bike, but such was mostly gone by the 80's, Was the "bung hole" added on later? Maybe.....
__________________
72 Line Seeker
83 Davidson Signature
84 Peugeot PSV
84 Peugeot PY10FC
84 Gitane Tour de France.
85 Vitus Plus Carbone 7
86 ALAN Record Carbonio
86 Medici Aerodynamic (Project)
88 Pinarello Montello
89 Bottecchia Professional Chorus SL
95 Trek 5500 OCLV (Project)
Chombi1 is offline  
Old 12-20-18, 12:22 AM
  #12  
Senior Member
 
Join Date: Oct 2015
Location: Los Angeles
Posts: 6,280

Bikes: 78 Masi Criterium, 68 PX10, 2016 Mercian King of Mercia, Rivendell Clem Smith Jr

Mentioned: 120 Post(s)
Tagged: 0 Thread(s)
Quoted: 2317 Post(s)
Liked 597 Times in 430 Posts
I'm thinking it's a wire hole for a BB dynamo. They were popular at this time. Not sure, but it seems likely.

On the top cable guides were the rule till about 1984 or so. IIRC. This bike most likely was made at the end of that period.
Salamandrine is offline  
Old 12-20-18, 01:31 AM
  #13  
Senior Member
 
Chombi1's Avatar
 
Join Date: Nov 2015
Posts: 4,485
Mentioned: 102 Post(s)
Tagged: 0 Thread(s)
Quoted: 1639 Post(s)
Likes: 0
Liked 829 Times in 538 Posts
Originally Posted by Salamandrine
I'm thinking it's a wire hole for a BB dynamo. They were popular at this time. Not sure, but it seems likely.

On the top cable guides were the rule till about 1984 or so. IIRC. This bike most likely was made at the end of that period.
I think top of BB cable guides were disappearing fast on bikes by the start of the 80's. Most "main line" production bikes, like Peugeots had plastic under BB cable guides at the start of the 80's. My 82 Peugeot PH10 (I sold in 84), 83 Davidson and 84 Peugeot PSV, 84 PY10FC and 84 Gitane TdF has under the BB cable guides.
I think, by 1984, if you were a builder of a big bike company using top mount cable guides, I think you would be considered to be behind the times.....
__________________
72 Line Seeker
83 Davidson Signature
84 Peugeot PSV
84 Peugeot PY10FC
84 Gitane Tour de France.
85 Vitus Plus Carbone 7
86 ALAN Record Carbonio
86 Medici Aerodynamic (Project)
88 Pinarello Montello
89 Bottecchia Professional Chorus SL
95 Trek 5500 OCLV (Project)
Chombi1 is offline  
Old 12-20-18, 08:14 AM
  #14  
Groupetto Dragon-Ass
 
Chuckk's Avatar
 
Join Date: May 2005
Location: Lostin Austin, TX
Posts: 615
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 414 Post(s)
Liked 783 Times in 370 Posts
Since we're playing blind man and the elephant, I'm going to guess the holes are threaded, on both sides, the bike is a tourer or city bike, and it's either a stand or generator brazeon.

Last edited by Chuckk; 12-20-18 at 08:46 PM.
Chuckk is offline  
Old 12-20-18, 11:54 AM
  #15  
Senior Member
 
CliffordK's Avatar
 
Join Date: Nov 2014
Location: Eugene, Oregon, USA
Posts: 27,547
Mentioned: 217 Post(s)
Tagged: 0 Thread(s)
Quoted: 18373 Post(s)
Liked 4,508 Times in 3,351 Posts
Originally Posted by P!N20
Assuming there is one on the other chainstay, and they're both threaded, could it be for a kick stand mounting plate?


I had assumed one hole was shown, so there was one hole. But, two holes might make a lot of sense.

The mount is likely forward from the tire, so a good place for a kickstand.

In the 70's, I think they had mechanical speedometers. By the 80's, I think we were seeing the first digital speedometers, but I'm not sure about cadence.

Issues with the canister generators and road bikes were well known, and there were center mounted generators, but I thought those were off of the seatstays or brake bridge. Or, perhaps the fork.

Anyway, if the OP is not buying the bike, then why not simply post a link to the actual bicycle. That way we can see actual details of the bike. It may be possible to see if there is a NDS braze-on.

Things like fender eyelets would also give information on whether this was intended to be a commuter, or a racing bike.
CliffordK is offline  
Old 12-20-18, 12:19 PM
  #16  
Senior Member
 
Join Date: Jan 2004
Location: Madison, WI USA
Posts: 6,154
Mentioned: 50 Post(s)
Tagged: 0 Thread(s)
Quoted: 2363 Post(s)
Liked 1,749 Times in 1,191 Posts
I had several computers with cadence in the '80s and '90s. None of them were made to mount to anything brazed to the frame, and they all worked off the NDS.
madpogue is offline  
Old 12-20-18, 12:52 PM
  #17  
Senior Member
Thread Starter
 
Join Date: Jan 2014
Location: PNW
Posts: 1,524

Bikes: One of everything and three of everything French

Mentioned: 51 Post(s)
Tagged: 0 Thread(s)
Quoted: 463 Post(s)
Liked 336 Times in 213 Posts
Originally Posted by CliffordK

Anyway, if the OP is not buying the bike, then why not simply post a link to the actual bicycle. That way we can see actual details of the bike.
https://offerup.co/vaTFgfNEMS

No need to post the 50 clues that this is no Cinelli frame. Sorry Buellster for spilling the beans.
Insidious C. is offline  
Old 12-20-18, 01:14 PM
  #18  
Senior Member
 
Join Date: May 2014
Posts: 2,537

Bikes: yes

Mentioned: 18 Post(s)
Tagged: 0 Thread(s)
Quoted: 1281 Post(s)
Liked 643 Times in 329 Posts
Threaded hole for one of those chain suck guards? I had a Trek 750 multitrack that had one. Seems odd for a "Vintage CINELLI Italy racing bike" lol.
ksryder is offline  
Old 12-20-18, 01:23 PM
  #19  
Banned
 
Join Date: Aug 2013
Posts: 6,480
Mentioned: 93 Post(s)
Tagged: 0 Thread(s)
Quoted: 1361 Post(s)
Likes: 0
Liked 423 Times in 282 Posts
Originally Posted by Salamandrine
I'm thinking it's a wire hole for a BB dynamo. They were popular at this time. Not sure, but it seems likely.

On the top cable guides were the rule till about 1984 or so. IIRC. This bike most likely was made at the end of that period.
Probable.
Those bb mounted dyno's were abysmal. Perhaps this particular frame hole was used as a pin guide for a modified gen bracket (possibly is threaded) to prevent forced rotation while in use. The Sanyo undermounts had a tendency to move. Owners would continue to torque them to 'tube crushing' gorilla specification.
crank_addict is offline  
Old 12-20-18, 02:02 PM
  #20  
Senior Member
 
Join Date: Oct 2015
Location: Los Angeles
Posts: 6,280

Bikes: 78 Masi Criterium, 68 PX10, 2016 Mercian King of Mercia, Rivendell Clem Smith Jr

Mentioned: 120 Post(s)
Tagged: 0 Thread(s)
Quoted: 2317 Post(s)
Liked 597 Times in 430 Posts
Originally Posted by Chombi1
I think top of BB cable guides were disappearing fast on bikes by the start of the 80's. Most "main line" production bikes, like Peugeots had plastic under BB cable guides at the start of the 80's. My 82 Peugeot PH10 (I sold in 84), 83 Davidson and 84 Peugeot PSV, 84 PY10FC and 84 Gitane TdF has under the BB cable guides.
I think, by 1984, if you were a builder of a big bike company using top mount cable guides, I think you would be considered to be behind the times.....
We're not far out of agreement. Perhaps my phrasing could have been better. To my recollection, 1984 was the year most companies switched over (or rather under... ), on average. Trek switched in 1983. Univega didn't switch till at least 1985. I can't remember when Bianchi switched but IIRC the under BB guides were introduced on their top/pro models pretty early on, but they kept the 'traditional' over BB guides on the mid level models for some time. Those were the main lines in the shop where I worked at the time. Never worked at a Peugeot dealer, but I'm not surprised they were early adopters. I think it was one of those Euro things that took an extra couple years to catch on in the states - like black rims.

I really only brought this up because the later design BB shell and above BB guides point to this transitional period of like 83-84ish, which is precisely when under BB dynamos were all the rage.

This is the kind of useless trivia that makes this forum great...
Salamandrine is offline  
Old 12-20-18, 02:18 PM
  #21  
Senior Member
 
ollo_ollo's Avatar
 
Join Date: Nov 2003
Location: Soviet of Oregon or Pensacola FL
Posts: 5,342

Bikes: Still have a few left!

Mentioned: 48 Post(s)
Tagged: 0 Thread(s)
Quoted: 467 Post(s)
Liked 532 Times in 267 Posts
My 1984 Specialized Expedition Touring has one of those BB generators with inside the frame wiring, but I couldn't remember how the wiring was routed, so went down to my shop & checked. Output to the headlight (black wire) enters through BB shell and goes up the down tube to exit just behind the head tube. Output to tail light (silver wire) is routed externally up the seat tube and under the rear rack.


Also note: Bike has top of BB mounted cable guides, so I guess Specialized was behind the times in 1984? Or maybe there's an exception when building a Classic Tourer. Don
Attached Images
File Type: jpg
IMG_2915.jpg (803.4 KB, 198 views)
ollo_ollo is offline  
Old 12-20-18, 02:27 PM
  #22  
Senior Member
 
ollo_ollo's Avatar
 
Join Date: Nov 2003
Location: Soviet of Oregon or Pensacola FL
Posts: 5,342

Bikes: Still have a few left!

Mentioned: 48 Post(s)
Tagged: 0 Thread(s)
Quoted: 467 Post(s)
Liked 532 Times in 267 Posts
My 79 PKN10 has under BB cable routing. So Peugeot was early, Specialized late. Edit, I meant to say 1 under BB and 1 above.

Last edited by ollo_ollo; 12-20-18 at 02:47 PM. Reason: correction
ollo_ollo is offline  
Old 12-20-18, 02:38 PM
  #23  
Senior Member
 
CliffordK's Avatar
 
Join Date: Nov 2014
Location: Eugene, Oregon, USA
Posts: 27,547
Mentioned: 217 Post(s)
Tagged: 0 Thread(s)
Quoted: 18373 Post(s)
Liked 4,508 Times in 3,351 Posts
Originally Posted by Insidious C.
https://offerup.co/vaTFgfNEMS

No need to post the 50 clues that this is no Cinelli frame. Sorry Buellster for spilling the beans.
Interesting bike. Frame built up from scratch for single speed/fixie?

Dating is probably close to what people have been saying, mid 80's.

Over BB cable routing is most common in 70's, and into early 80's.

DT bottle cage came perhaps mid 70's, but ST bottle cage braze-ons came later (80's)?

Ahh, it does also have the shifter braze-ons, but in at least one photo, they look SHORT.



The $145 asking price is probably close, but only if one can replace the shifter bosses cheaply (or doesn't want them).

I think I'd ask for some better rear-end photos before going to see the bike.
CliffordK is offline  
Old 12-20-18, 02:57 PM
  #24  
Senior Member
Thread Starter
 
Join Date: Jan 2014
Location: PNW
Posts: 1,524

Bikes: One of everything and three of everything French

Mentioned: 51 Post(s)
Tagged: 0 Thread(s)
Quoted: 463 Post(s)
Liked 336 Times in 213 Posts
Originally Posted by CliffordK
I think I'd ask for some better rear-end photos before going to see the bike.
You know what they say; "be careful what you ask for."

The stays do look rough but could just be tape.
Insidious C. is offline  
Old 12-20-18, 04:13 PM
  #25  
Senior Member
 
Buellster's Avatar
 
Join Date: Jun 2018
Posts: 733
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 213 Post(s)
Likes: 0
Liked 6 Times in 5 Posts
Originally Posted by Insidious C.
https://offerup.co/vaTFgfNEMS

No need to post the 50 clues that this is no Cinelli frame. Sorry Buellster for spilling the beans.
haha no worries, like I said it's a pass for me right now
Buellster is offline  


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.