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

What are these cranks?

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.

What are these cranks?

Thread Tools
 
Search this Thread
 
Old 02-08-23, 10:34 PM
  #1  
grant40
Senior Member
Thread Starter
 
grant40's Avatar
 
Join Date: Sep 2021
Posts: 718
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 261 Post(s)
Liked 346 Times in 204 Posts
What are these cranks?

Rare specie



grant40 is offline  
Old 02-08-23, 10:43 PM
  #2  
C9H13N 
Full Member
 
Join Date: Dec 2012
Location: North Seattle
Posts: 387

Bikes: Davidson ’81

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 120 Post(s)
Liked 229 Times in 121 Posts
https://velobase.com/ViewComponent.a...55dcb&Enum=115
C9H13N is offline  
Old 02-08-23, 10:57 PM
  #3  
unworthy1
Stop reading my posts!
 
unworthy1's Avatar
 
Join Date: Sep 2004
Posts: 12,584
Mentioned: 90 Post(s)
Tagged: 0 Thread(s)
Quoted: 1444 Post(s)
Liked 1,064 Times in 788 Posts
Yep ^ Topline.
With what looks to me like at least one Mavic chainring (the big). Not sure of the small.
unworthy1 is offline  
Old 02-09-23, 12:16 PM
  #4  
dddd
Ride, Wrench, Swap, Race
 
dddd's Avatar
 
Join Date: Jan 2010
Location: Northern California
Posts: 9,194

Bikes: Cheltenham-Pedersen racer, Boulder F/S Paris-Roubaix, Varsity racer, '52 Christophe, '62 Continental, '92 Merckx, '75 Limongi, '76 Presto, '72 Gitane SC, '71 Schwinn SS, etc.

Mentioned: 132 Post(s)
Tagged: 0 Thread(s)
Quoted: 1565 Post(s)
Liked 1,296 Times in 866 Posts
Originally Posted by bbbob
Grafton
Topline, not Grafton.

It's the SL version, somewhat prone to splitting the non-driveside "knuckle" if repeatedly or heavily tightened onto the tapered spindle.
These were rider weight-limited to only 185lbs or so!

Best to torque once, dry, to only 24ft-lbs, using blue LocTite on the bolt threads.

These can fetch big money on Ebay.
dddd is offline  
Old 02-09-23, 01:31 PM
  #5  
Chombi1 
Senior Member
 
Chombi1's Avatar
 
Join Date: Nov 2015
Posts: 4,489
Mentioned: 102 Post(s)
Tagged: 0 Thread(s)
Quoted: 1641 Post(s)
Likes: 0
Liked 831 Times in 540 Posts
They look very classic C&V but I think they were really from the very late 80's and early 90's. At first I thought they were from the 60's or 70's. The swaged on DS crank arm and the very delicate shaping of the arms make the look like an older than 80's cranksets.Still a good choice for doing a weight weene C&V build, because they are so light; except one will have to live with pedal holes that do not go through the crank arm, so pedals with just a hex socket at the end of their spindles don't work, in terms of tightening them good on to the crank arms. One will need pedals with flats between the pedal and rhe crankarms to do so. There are also no lands in the spider arm ends for an inner chainring. Yes you can still bolt an inner chainring, but it just does not look right without those lands, so technically it is a single chainring crankset.I understand that a lot of MTB riders used this crankset in the 90's to save weight.I have an NOS set of these in my stash for some years now, but haven't quite found the right bike to put them on.....Maybe an American, 80's artisenal frameset similar to my Davidson could work nicely with them?​​​​​​​​​​​​​​​​​​​​​

Last edited by Chombi1; 02-09-23 at 01:34 PM.
Chombi1 is offline  
Old 02-13-23, 02:18 PM
  #6  
dddd
Ride, Wrench, Swap, Race
 
dddd's Avatar
 
Join Date: Jan 2010
Location: Northern California
Posts: 9,194

Bikes: Cheltenham-Pedersen racer, Boulder F/S Paris-Roubaix, Varsity racer, '52 Christophe, '62 Continental, '92 Merckx, '75 Limongi, '76 Presto, '72 Gitane SC, '71 Schwinn SS, etc.

Mentioned: 132 Post(s)
Tagged: 0 Thread(s)
Quoted: 1565 Post(s)
Liked 1,296 Times in 866 Posts
Originally Posted by Chombi1
....I have an NOS set of these in my stash for some years now, but haven't quite found the right bike to put them on.....Maybe an American, 80's artisenal frameset similar to my Davidson could work nicely with them?​​​​​​​​​​​​​​​​​​​​​
...perhaps?
dddd is offline  
Likes For dddd:

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



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.