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

What threads are used to pull can’t crankset?

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 threads are used to pull can’t crankset?

Old 07-17-22, 06:29 PM
  #1  
LBCwanabe 
Senior Member
Thread Starter
 
Join Date: Apr 2016
Posts: 513
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 106 Post(s)
Liked 322 Times in 132 Posts
What threads are used to pull can’t crankset?

Are they the same as Shimano/sun tour? Or are they a special type? Thank you!


sorry! Auto correct on campy

Last edited by LBCwanabe; 07-17-22 at 06:48 PM.
LBCwanabe is offline  
Old 07-17-22, 06:30 PM
  #2  
clubman 
Phyllo-buster
 
clubman's Avatar
 
Join Date: Jan 2010
Location: Nova Scotia
Posts: 8,831

Bikes: roadsters, club bikes, fixed and classic

Mentioned: 133 Post(s)
Tagged: 0 Thread(s)
Quoted: 2287 Post(s)
Liked 2,031 Times in 1,245 Posts
?
clubman is offline  
Old 07-17-22, 06:34 PM
  #3  
Doug Fattic 
framebuilder
 
Join Date: Dec 2009
Location: Niles, Michigan
Posts: 1,459
Mentioned: 50 Post(s)
Tagged: 0 Thread(s)
Quoted: 610 Post(s)
Liked 1,905 Times in 647 Posts
Originally Posted by LBCwanabe
Are they the same as Shimano/sun tour? Or are they a special type? Thank you!
Did you mean to say "Campy" crankset?
Doug Fattic is offline  
Old 07-17-22, 06:42 PM
  #4  
cudak888 
www.theheadbadge.com
 
cudak888's Avatar
 
Join Date: Sep 2005
Location: Southern Florida
Posts: 28,496

Bikes: https://www.theheadbadge.com

Mentioned: 123 Post(s)
Tagged: 0 Thread(s)
Quoted: 2401 Post(s)
Liked 4,350 Times in 2,075 Posts
22, unless it's 23. But sometimes it's 23.35, but technically 23.15.

Then there's this, if the threads are 23 x 0.0.




Next question?

/s

-Kurt

P.S.: Jokes aside, nothing special about Campag square taper. 22mm. You may find that you'll need a very thin-wall 15mm socket to pull the crank bolt though.
__________________












cudak888 is offline  
Old 07-17-22, 10:15 PM
  #5  
Bad Lag
Senior Member
 
Join Date: Jul 2013
Location: So Cal, for now
Posts: 2,475

Bikes: 1974 Bob Jackson - Nuovo Record, Brooks Pro, Clips & Straps

Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 1104 Post(s)
Liked 794 Times in 452 Posts
This removes the crank bolts - the famous "peanut butter wrench".


This pulls the crank arm off the spindle, using the same wrench.
Bad Lag is offline  
Old 07-17-22, 10:20 PM
  #6  
Bad Lag
Senior Member
 
Join Date: Jul 2013
Location: So Cal, for now
Posts: 2,475

Bikes: 1974 Bob Jackson - Nuovo Record, Brooks Pro, Clips & Straps

Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 1104 Post(s)
Liked 794 Times in 452 Posts
Park makes a tool, as well. These are much less expensive than the pair of vintage Campagnolo tools.


Bad Lag is offline  
Old 07-17-22, 11:25 PM
  #7  
merziac
Senior Member
 
merziac's Avatar
 
Join Date: Oct 2015
Location: PDX
Posts: 14,101

Bikes: Merz x 5 + Specialized Merz Allez x 2, Strawberry/Newlands/DiNucci/Ti x3, Gordon, Fuso/Moulton x2, Bornstein, Paisley,1958-74 Paramounts x3, 3rensho, 74 Moto TC, 73-78 Raleigh Pro's x5, Marinoni x2, 1960 Cinelli SC, 1980 Bianchi SC, PX-10 X 2

Mentioned: 267 Post(s)
Tagged: 0 Thread(s)
Quoted: 4494 Post(s)
Liked 6,300 Times in 3,633 Posts
Originally Posted by Bad Lag
This removes the crank bolts - the famous "peanut butter wrench".


This pulls the crank arm off the spindle, using the same wrench.
IMO, you need 2 wrenches, snug the body in the crank arm threads then hold the body with a wrench so the forcing screw works against the body, not the crank arm threads, they are never to be trusted.
merziac is online now  
Old 07-17-22, 11:54 PM
  #8  
P!N20
Senior Member
 
P!N20's Avatar
 
Join Date: Aug 2010
Location: Wurundjeri Country
Posts: 2,452
Mentioned: 32 Post(s)
Tagged: 0 Thread(s)
Quoted: 1073 Post(s)
Liked 1,882 Times in 924 Posts
Don't forget if they're C-Record cranks they have a left hand thread.

(Although C-Rec cranks should have the self extracting bolts.)
P!N20 is offline  
Old 07-18-22, 03:43 AM
  #9  
verktyg 
verktyg
 
verktyg's Avatar
 
Join Date: Jul 2006
Location: SF Bay Area
Posts: 4,035

Bikes: Current favorites: 1988 Peugeot Birraritz, 1984 Gitane Super Corsa, 1980s DeRosa, 1981 Bianchi Campione Del Mondo, 1992 Paramount OS, 1988 Colnago Technos, 1985 RalieghUSA SBDU Team Pro

Mentioned: 207 Post(s)
Tagged: 0 Thread(s)
Quoted: 1036 Post(s)
Liked 1,236 Times in 653 Posts
Inexpensive Puller For Crank Arm Stripped Threads

About a year and a half ago I had a problem with an almost NOS crank arm that had been tapped oversize at the factory. Instead of 22mm x 1.0 the threads were about 22.5mm x 1.0. My Shimano puller came right out along with the tops of the threads. My 23mm x 1.0 TA puller was to big!



Came up with an inexpensive solution! An automotive Pitman Arm Puller used for steering linkage repairs. They come in 2 sizes... You want the smaller size. You can find them at auto parts stores in the US and online for about $15-$16.

I modified it a little on a bench grinder to fit over the crank arm and into the space between the BB cup. Ground a taper on the puller screw to fit into the square taper hole - the dimensions are shown below.





I picked up 2 different size 1/8" thick hardened steel washers at a local Ace Hardware for different brand cranks. Cut the slots with and 1/8" thick cut off grinding wheel using an angle grinder. They prevent damage to the arm.



Worked perfect! No scratches or dings. The arm came right off!



cudak888 Much simpler than the 2 or 3 arm bearing pullers which will kluge up crank arms!

verktyg
__________________
Don't believe everything you think! History is written by those who weren't there....

Chas. ;-)


Last edited by verktyg; 07-18-22 at 04:12 AM.
verktyg is offline  
Likes For verktyg:
Old 07-18-22, 10:41 AM
  #10  
bamboobike4
Banned.
 
Join Date: Jan 2022
Posts: 1,070
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 359 Post(s)
Liked 581 Times in 335 Posts
Nice idea.

The lips of the pullers I use don't fit between the crank arm and the BB, and the washer made that even less plausible. Even ground down, not working.
Some crank arms have a beveled shape on the back, and coupled with the thickness of the puller lips, a no-go for about 2/3 of my applications.

But, for 1/3 of them, a huge saver !!

The modern FSA cranksets, for one, have a very weak "self-extracting" ring. It will pull out of there in a heartbeat.
Then, the space behind the crank arm is almost nil. Possibly re-threading a 23mm in there may work.
bamboobike4 is offline  

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


Thread Tools
Search this Thread

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.