Advertise on Bikeforums.net



User Tag List

Results 1 to 11 of 11
  1. #1
    Senior Member
    Join Date
    Jun 2014
    Location
    Southern Maryland
    My Bikes
    Trek 820, Cannondale F500 with Trekking bars and road tires, Bianchi Alfana, Panasonic PCI "Les Maillots", Cannondale M1000 Tandem, Schwinn Johnny, Trek Lime, 1964 Armstrong, 1962 Raleigh Gazelle, 1964 AMF Hercules, Brooklyn Cruiser Driggs
    Posts
    133
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)

    Got the cotters out...Can't remove the crank arms

    I used the Harbor Freight tool to get the cotter crank pins out of my '64 Hercules but the crank arm are stuck on the spindle. I hammered a bit on a drift positioned on the inside of the arm where there seemed to be a divot location. But they are frozen pretty solid. I tried to heat up the arm a bit with a heat ***. And I sprayed PB Blaster on the inside bore and around the spindle to arm interfaces. Now I will give it some time and let it soak. Is there something else that I can do?

    I expected a fight from the cotters, but not the arms themselves.

  2. #2
    Senior Member bwilli88's Avatar
    Join Date
    Jan 2013
    Location
    Kampong Cham, Cambodia but I have too much in Lancaster, PA
    My Bikes
    73 Raleigh Supercourse, 74 Raleigh Grand Prix, 76 Raleigh Grand Prix SS, 77 & 78 Raleigh Supercourse, 85 Gazelle gents bike w/2 speed SRAM, 2012 Fuji Stratos road, ?? CBA (Japanese) Precision Vitesse Now 29r, ?? Maxwell(Japanese) hybrid SS, ?? Bridge
    Posts
    569
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    use something that transfers a hit over a longer period than a hard metal hammer, use a block of wood or a dead blow hammer. A sharp hit from a metal hammer has too quick of an impulse to move the crank arms easily where a dead blow hammer or hitting a piece of wood (along its length) transfers a longer impulse and helps get it off. Get the NDS off first to give more room for getting the DS off
    Biking in Cambodia
    <><

  3. #3
    Still learning oddjob2's Avatar
    Join Date
    May 2012
    Location
    North of Canada, Adirondacks, NNJ
    My Bikes
    Too many
    Posts
    9,120
    Mentioned
    177 Post(s)
    Tagged
    2 Thread(s)
    Go for a bike ride leaving the pins out. Guaranteed to fall off. Bring a phone so you can get a ride home.
    Life is like riding a bicycle. To keep your balance you must keep moving. Albert Einstein
    2016 Additions: 1981 Miyata 1000, 1981 Schwinn Voyageur 11.8 chrome, Schwinn Paramount 50th Anniversary, Dawes Galaxy, Raleigh International, 1985 Raleigh Alyeska

  4. #4
    Senior Member Flying Merkel's Avatar
    Join Date
    Mar 2008
    Location
    Costa Mesa CA
    Posts
    2,638
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by oddjob2 View Post
    Go for a bike ride leaving the pins out. Guaranteed to fall off. Bring a phone so you can get a ride home.
    Beat me to it. Not just funny, but true. Worked for me.
    Pronounced "Murkle"

  5. #5
    rhm
    rhm is offline
    multimodal commuter rhm's Avatar
    Join Date
    Nov 2006
    Location
    NJ, NYC, LI
    My Bikes
    1940s Fothergill, 1959 Allegro Special, 1963? Claud Butler Olympic Sprint, Lambert 'Clubman', 1974 Fuji "the Ace", 1976 Holdsworth 650b conversion rando bike, 1983 Trek 720 tourer, 1984 Counterpoint Opus II, 1993 Basso Gap, 2010 Downtube 8h, and...
    Posts
    15,446
    Mentioned
    294 Post(s)
    Tagged
    1 Thread(s)
    Quote Originally Posted by Flying Merkel View Post
    Beat me to it. Not just funny, but true. Worked for me.
    Actually no, this will at best free one crank arm. But you're on the right track. Bring two new cotters with you; when one crank arm breaks free, put the cotter in and keep riding. When the second one breaks free, put on the other cotter and head home.

  6. #6
    Senior Member Thumpic's Avatar
    Join Date
    Dec 2007
    Location
    The Sunny South
    Posts
    1,842
    Mentioned
    6 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by oddjob2 View Post
    Go for a bike ride leaving the pins out. Guaranteed to fall off. Bring a phone so you can get a ride home.
    Might as well ride to the bar and have a few if you're gonna get a ride home anyway......
    Thumpic....

    Green is the new "CHEAP"

  7. #7
    Senior Member
    Join Date
    Sep 2013
    Posts
    108
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    I would try using either a gear puller
    gear-puller-250x250.jpg

    or a ball joint fork
    06SnowSpecToolsE_img_93.jpg

    Harbor Freight has gear pullers for $14 and ball joint forks for $10 on their website.
    Last edited by John Hood; 07-08-14 at 09:20 PM.

  8. #8
    Senior Member seedsbelize's Avatar
    Join Date
    Nov 2010
    Location
    Tixkokob, Yucatán, México
    My Bikes
    '84 Schwinn Letour Luxe, '87 Schw'inn Prelude, 91 Giant Yukon, 92 Schwinn Paramount PDG 5 unicrown, '93 Specialized Hardrock
    Posts
    2,817
    Mentioned
    24 Post(s)
    Tagged
    0 Thread(s)
    I had a Nissan pick-up that I drove to Belize, and ultimately left there. The trailer hitch had, at some point become one with the insert. We had it chained to a tree with a large tractor pulling it the other way, and someone wailing on it with a sledge hammer. It never budged. In your case I'd go with the ball joint fork, and hope for better luck that what I had.

  9. #9
    Senior Member SJX426's Avatar
    Join Date
    May 2008
    Location
    Alexandria, Va
    My Bikes
    '72 Motobecane Le Champion(totaled), '73 Bottecchia Giro d'Italia, '83 Colnago Superissimo, '84 Trek 610, '84 Trek 760, '94 Burley Duet, '88 Pinarello Tre Cime, '88 Masi Gran Corsa, '91 Pinarello Montello, '97 Specialized RockHopper, 2010 Langster
    Posts
    4,814
    Mentioned
    65 Post(s)
    Tagged
    1 Thread(s)
    Yeah! Pullers or forks can get you some excellent resulsts:

  10. #10
    Senior Member Ed.'s Avatar
    Join Date
    Mar 2014
    Location
    Hopkinton, MA
    My Bikes
    1938 Raleigh Record Ace (2), 1938 Schwinn Paramount, 1961 Torpado, 1964? Frejus, 1980 Raleigh 753 Team Pro, Moulton, other stuff...
    Posts
    1,391
    Mentioned
    65 Post(s)
    Tagged
    0 Thread(s)
    A bearing splitter may enable the use of a puller without damaging the crank.



    Otherwise I like the idea of putting two spare cotters in your pocket and going for a ride. DON'T however, stand on the pedals!!!

  11. #11
    Stop reading my posts! unworthy1's Avatar
    Join Date
    Sep 2004
    Posts
    9,076
    Mentioned
    26 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by rhm View Post
    Actually no, this will at best free one crank arm. But you're on the right track. Bring two new cotters with you; when one crank arm breaks free, put the cotter in and keep riding. When the second one breaks free, put on the other cotter and head home.
    This^ best advice (short of the special/modified/kludged automotive/machinist tools)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •